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Read Sectors

6. ATA Command Specification

SONY AIT-1 Turbo drive SDX-470V series Ver.1.0

6-23

6.9. Read Sectors (20h)

In response to this command, devices that implement the PACKET Command feature set shall post command

aborted and place the PACKET Command feature set signature in the Cylinder High and the Cylinder Low register
(see 6.1.2).

Содержание AIT-SDX470

Страница 1: ...SDX 470V RP 5 25 Model Product Specification Manual Version 1 0 Aug 2005 Copyright 2005 Sony Corporation All right reserved NOTE This Product Specification Manual is applicable for AIT 1 Turbo Serial ATA I F drive ...

Страница 2: ...ectronics S Pte Ltd Enterprise Storage Solutions Dept 2 International Business Park 01 10 Tower One The Strategy Singapore 609930 TEL 65 6544 8000 FAX 65 6544 7390 Sony Taiwan Limited Optical Devices Storage Dept Data Storage Section 5F 145 Changchun Road Taipei 104 Taiwan TEL 886 2 2522 7920 FAX 886 2 2522 2153 Sony Corporation of Hong Kong Ltd Computer Peripheral Sales Marketing Division Electro...

Страница 3: ...Changing List Page Clause Title Modify Add Delete Remarks SDX 470V Series Ver 1 0 AUGUST 2005 RELEASE ...

Страница 4: ...This page intentionally left blank ...

Страница 5: ... 6 2 3 1 Data Capacity 2 7 2 3 2 Data transfer Rate 2 7 2 3 2 1 Sustained Data Transfer Rate to and from Tape 2 7 2 3 2 2 Burst Transfer Rate to and from the Serial ATA 2 7 2 3 3 Initialize Time 2 7 2 3 4 Load Time 2 7 2 3 5 Unload Time 2 8 2 3 6 Search Time 2 8 2 3 7 Rewind Time 2 8 2 3 8 Error Rate 2 8 2 3 9 Retry Limits on Rewrites 2 8 2 3 10 Definition of Failure 2 8 2 3 11 Mean Time Between F...

Страница 6: ...4 4 Tape Format 4 5 4 4 1 Tape Partitions 4 5 4 4 1 1 Formatting Partitions 4 5 4 5 Maintenance Troubleshooting and Service 4 6 4 5 1 Head Cleaning 4 6 4 5 1 1 Message When Cleaning Cartridge is Necessary 4 6 4 5 1 2 The Condition of Cleaning Request 4 6 4 5 1 3 Usage of Cleaning Cartridge 4 6 4 5 2 Troubleshooting Guide 4 6 4 5 2 1 Operational Problems 4 6 4 5 2 2 Read Write Problems 4 9 4 5 2 3 ...

Страница 7: ...Code 3Eh 7 28 7 7 MODE SELECT 15h 7 30 7 8 MODE SENSE 1Ah 7 32 7 8 1 Disconnect Reconnect Page 02h 7 34 7 8 2 Data Compression Control Page 0Fh 7 34 7 8 3 Device Configuration Page 10h 7 36 7 8 4 Medium Partition Page 11h 7 38 7 8 5 Medium Partition Page 11h for multi partitioned tapes 7 40 7 8 6 Informational Exceptions Control Page 1Ch 7 42 7 8 7 AIT Device Configuration Page 31h 7 43 7 8 8 Appe...

Страница 8: ...ge 14 2 14 2 Functional Benefits 14 3 14 2 1 Fast Media Load Unload 14 3 14 2 2 Super High Speed Search 14 4 14 2 3 Data Integrity Media Management 14 5 14 2 3 1 Sample Application for MIC 14 5 15 APPENDIX G Miscellaneous notes to AIT E Turbo AIT 1 Turbo contact type MIC 15 1 15 1 Partition Numbering in the DDS Emulation Mode 15 1 15 2 AIT Log Sense 15 1 15 3 Write Protection Tab on SDX2 cassette ...

Страница 9: ... Partitioning 16 1 16 1 MIC Features 16 1 16 2 The Default Mode for Drive 16 1 16 3 Cassette has a Mode 16 1 16 4 Re Using Cassettes 16 1 16 5 LOADING UNLOADING 16 2 16 6 Application Notes 16 3 16 6 1 Backup Techniques with MIC Cassettes 16 3 16 6 2 How to Change Active Partition 16 3 16 6 3 Retention 16 3 ...

Страница 10: ...SDX 470V series Ver 1 0 Table of Contents This page intentionally left blank ...

Страница 11: ...rding densities have increased up to ten fold while the time to access this data has increased less than two fold creating a large mismatch between the amount of stored data and the ability to access it This large gap between data access latency and areal density has created a dilemma in application development and limited the potential to implement truly cost effective tertiary storage solutions ...

Страница 12: ... Fixed record length Read After Write RAW On and Off capability Read Retry On and Off capability Frame rewrite function Three levels of Error Correction Code ECC High Speed search 120 times nominal Read Write speed Random read Append write MIC Support Automatic reliability and performance enhancement MIC Support Read and write capability for MIC user data area 1 4 Reference Please refer to the fol...

Страница 13: ... mm 4 00 in 0 5 mm 0 02 in Depth 155 0 mm 6 10 in 0 5 mm 0 02 in The SDX 470V RP Height 41 2 mm 1 62 in 0 5 mm 0 02 in Width 146 0 mm 5 75 in 0 5 mm 0 02 in Depth 155 0 mm 6 10 in 0 5 mm 0 02 in Note The above dimensions do not include the front panel thickness eject button and Serial ATA connector Figure 2 1 Dimensions SDX 470V Height 41 2 0 5mm 1 62 0 02 Width 101 6 0 5mm 4 00 0 02 Depth 155 0 0...

Страница 14: ...re 2 2a SDX 470V P Mounting Holes 155 0 0 5mm 6 10 0 02 90 0 0 3mm 3 54 0 01 60 0 0 3mm 2 36 0 01 70 0 0 3mm 2 76 0 01 31 0 0 3mm 1 22 0 01 21 0 0 3mm 0 83 0 01 41 2 0 5mm 1 62 0 02 4 8 0 5mm 0 19 0 02 6 M3 depth 2 5mm 0 10 max 6 M3 depth 2 5mm 0 10 max 42 0 0 3mm 1 65 0 01 94 0 0 5mm 3 70 0 02 101 6 0 5mm 4 00 0 02 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 7 4 0 6mm 0 29 0 02 _ _ _ _ _ _ _ _ _ 9 8 0 6mm 0 39...

Страница 15: ...m 1 87 0 01 94 0 0 5mm 3 70 0 02 21 8 0 5mm 0 86 0 02 41 2 0 5mm 1 62 0 02 9 9 0 5mm 0 39 0 02 139 6 0 5mm 5 50 0 02 146 0 0 5mm 5 75 0 02 149 0 0 5mm 5 87 0 02 155 0 0 5mm 6 10 0 02 7 6mm 0 3 70 0 0 3mm 2 76 0 01 31 0 0 3mm 1 22 0 01 42 0 0 3mm 1 65 0 01 4 M3 6 M3 _ _ _ _ _ _ _ _ _ _ 7 0 0 5mm 0 28 0 02 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 7 4 0 6mm 0 29 0 02 _ _ 9 8 0 6mm 0 39 0 02 _ ...

Страница 16: ...dware specification of this interface can be found in 6 3 cables and connectors specifications of the Serial ATA High Speed Serialized AT Attachment Revision 1 0a 2 2 Environmental Specifications The specifications which apply when media is present may be different than these 2 2 1 Temperature and Humidity Range Temperature Operating 5 C to 40 C T 10 C h Non Operating mech 40 C to 70 C T 20 C h No...

Страница 17: ...ine Performance 5 G Peak 3 ms 3 axes 3 directions Interval 10 seconds Non operating No Device Damage Half Sine 90 G Peak 3 ms 30 G Peak 11 ms 3 axes 3 directions Interval 10 seconds 2 2 6 Acoustic Noise The ambient noise level is no greater than 25 dB A The sound meter on A scale is located 1m in front of the center of the drive front panel A A curve weight Streaming Write Read 35dB A Insert Eject...

Страница 18: ...capacity data transfer rate and data reliability specifications this chapter require the media to conform to the AIT E Turbo AIT 1 Turbo and AIT 1 Media Specification and also require the drive and media to remain within their respective operating and non operating environmental specifications The specifications below also assume that the C3 ECC frame is generated on writing and used as necessary ...

Страница 19: ...yte per second with AIT 1 cassette For this sustained rate to be achieved the drive must be streaming There may be some dependency on the host and application softwares for this to be achieved 2 3 2 2 Burst Transfer Rate to and from the Serial ATA The SDX 470V will transmit and receive data bursts to and from the Serial ATA at a maximum burst rate of 150 Mbyte per second 2 3 3 Initialize Time Init...

Страница 20: ... time it may take for retrying is not reflected here TAITE 20N 98m SDX1 25C 170m SDX1 35C 230m TAIT1 40N 186m TAIT1 40C 186m Rewind Time 60 sec 80 sec 105 sec 90 sec 90 sec 2 3 8 Error Rate The un correctable bit error rate is expected to be less than 1 in 10 to the 17th 2 3 9 Retry Limits on Rewrites For Read after Write error correction each frame can be rewritten up to a maximum of 63 times giv...

Страница 21: ...quipment where the suitability of the combination has been determined by an appropriate certification organization for example Underwriters Laboratories Inc or the Canadian Standards Association in North America and the British Standards Institution or Verband Deutscher Elektrotechniker in Europe Other considerations include the following 1 An enclosure must be supplied to limit the operator s acc...

Страница 22: ...ile type The SDX 470V uses the ALDC Data Compression algorithm ALDC is ECMA standard data compression algorithm ECMA 222 The Data Compression control page allows the host computer to enable data compression and decompression and also configure the way in which the drive responds to compressed uncompressed data boundaries on the tape The AIT E Turbo AIT 1 Turbo and AIT 1 Format allows both compress...

Страница 23: ... Manual is applicable for SDX 470V drive Dip switch Figure 3 1 DIP switch 1 Drive Mode 1 2 Drive Mode 2 3 Drive Mode 3 4 Drive Mode 4 5 Reserved OFF 6 Periodic Cleaning Req ON 7 DC Control 1 ON 8 DC Control 2 OFF Figure 3 2 DIP Switch positions Table 3 1 Drive Mode DIP SW 1 2 3 4 MODE OFF OFF OFF OFF Normal 1 2 3 4 5 6 7 8 ON OFF ...

Страница 24: ...ed at power on The host is allowed to control compression ON ON Compression enabled at power on The host is not allowed to control compression Figure 3 3 Data Compression Switches 3 1 2 Legacy Power Connector The Legacy power connector is illustrated as Figure 3 4 5V GND GND 12V 4 3 2 1 Figure 3 4 Legacy Power Connector 3 1 3 SATA Interface Connectors Figure 3 5 illustrates SATA Signal Power conne...

Страница 25: ...3 3V power 3 3V P2 V33 3 3V power 3 3V P3 V33 3 3V power pre charge 2nd Mate 3 3V P4 Gnd 1st mate Gnd P5 Gnd 2nd mate Gnd P6 Gnd 2nd mate Gnd P7 V5 5V power pre charge 2nd Mate 5V P8 V5 5V power 5V P9 V5 5V power 5V P10 Gnd 2nd mate Gnd P11 Reserved 1 This pin corresponding to P11 in the backplane receptacle connector is also reserved 2 The corresponding pin to be mated with P11 in the power cable...

Страница 26: ...six magnets on the cover s back face the drive bezel Holding the dust cover at an angle as shown in the figure below set the hinge clips on top of the bezel pins positioning them so that they bracket the pins 2 Press down at an angle on each side in turn until you hear the hinge clips click into place Caution Do not press the dust cover in horizontally from the side Doing so could cause the dust c...

Страница 27: ... 1 Turbo drive SDX 470V series Ver 1 0 3 5 3 1 4 2 Removing the Dust Cover 1 Open the dust cover 2 Holding the dust cover at both corners carefully raise the dust cover The dust cover hinge clips and drive bezel pins uncouple ...

Страница 28: ...3 Installation SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 3 6 This page intentionally left blank ...

Страница 29: ...or occurred All of three LEDs flash fast simultaneously when the drive is in malfunction The following table shows the meaning of each LED indications Table 4 1 Meaning of each LED indications LED Tape Motion Cleaning Request Replace Tape Off No Tape Cleaning is Not Necessary No Media Error Occurred On Tape Loaded Cleaning Request Media Error Occurred Flash Slowly Tape Access in Progress Write Rea...

Страница 30: ...n response to a ATA ATAPI UNLOAD command or by pressing the Eject button The operator uses the Eject button to initiate the unload sequence see clause 4 3 2 The mechanism winds the tape to Beginning of Media BOM unthreads it and ejects the cassette from the slot Operation of the Eject button is disabled if the host has previously sent an ATA ATAPI PREVENT ALLOW MEDIA REMOVAL command with prevent b...

Страница 31: ...T1 40N Refer to 14 2 1 Fast Media Load Unload Effective for SDX1 25C SDX1 35C and TAIT1 40C MIC cassette The drive will always write any buffered data out to tape followed by an EOD prior to initiating the Unload sequence During this sequence the tape is rewound to BOT and if the tape is write enabled the copy of the tape log held in RAM is written back to tape The tape is then rewound to BOM and ...

Страница 32: ...al units When a Diagnostic error occurs all LED flash fast Then the SDX 470V must be powered off The SDX 470V will not work and should be checked or repaired immediately The purpose of the diagnostic firmware to test the SDX 470V electronics for functionality If the diagnostic request comes from the host through IDE then the results are reported through IDE If the electronics are not functioning t...

Страница 33: ... usage may be very different for each partition Similarly each has its own Vendor Group because the partitions might be written by different drives 4 4 1 1 Formatting Partitions The ATA ATAPI MODE SELECT command is used to create partitions on a tape The command can perform the following operations Set up two partitions on a blank tape Convert a single data space tape to a 2 partition tape Convert...

Страница 34: ...ject cleaning cartridge for consumer drives or for any other format The cleaning Request is indicated by the Starts LED flashing on for 3 5 seconds off for 0 5 seconds 4 5 2 Troubleshooting Guide Problems encountered while operating the Sony SDX 470V tape drive fall into two categories Operational problems and Read Write problems Operational problems include any conditions that prevent the tape dr...

Страница 35: ...lutely mandatory that the tape cassette be removed prior to returning the drive for repair the following Emergency Cassette Removal procedure should be followed Caution This procedure should only be attempted by a mechanically qualified person and will probably result in the tape being unusable Do not proceed if further damage to the tape drive would be done Photo 4 1 Emergency Tape Removal Proced...

Страница 36: ...lockwise to tighten the tape 6 After the tape slack has been removed continue to turn the Loading moter shaft located on the bottom of the drive clockwise by a precision screwdriver until the tape cartridge is lifted out of the drive mechanism and is ejected 7 Return the drive to Sony for repair The drive powers up properly and loads and unloads tapes but will not respond to any ATA ATAPI commands...

Страница 37: ...exceeded the drive will indicate that the tape is bad by flashing the Replace Tape LED MEW Media Warning bit is 1 The indicator will be on for 0 9 seconds off for 0 3 seconds The Tape Motion and Cleaning Request LEDs will operate normally If this occurs the data on the cassette should be copied onto a new one and the old cassette discarded This status is cleared by unloading the cassette The Media...

Страница 38: ...4 Operation SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 4 10 This page intentionally left blank ...

Страница 39: ...e responsibility of the host adapter to gate transmission of Register FIS s to devices as appropriate based on the value of the DEV bit The host adapter may present a Master only emulation to host software that is each device is a Device 0 and each Device 0 is accessed at a different set of host bus addresses The host adapter may optionally present a Master Slave emulation to host software that is...

Страница 40: ...e data that follows the previous read PIO in data transfers are processed by a series of writes to this register each write transferring the data that follows the previous write Device Control register This register allows a host to software reset attached devices and to enable or disable the assertion of the INTRQ signal by a selected device When the Device Control register is written both device...

Страница 41: ...valid or some other error has occurred The content of this bit is command dependent Features register The content of this register is command dependent and becomes a command parameter when the Command register is written Sector Count register The content of this register is command dependent and becomes a command parameter when the Command register is written Sector Number register The content of ...

Страница 42: ...t a data block after the first data block during a PIO data out command 5 a device implementing the PACKET Command feature set is ready to receive the command packet and bits 6 5 in word 0 of the IDENTIFY PACKET DEVICE response have the value 01b 6 a device implementing the PACKET Command feature set is ready to transfer a DRQ data block during a PIO transfer 7 a device implementing the Overlap fe...

Страница 43: ...for this drive Table 6 1 ATAPI Packet Command List Command Description OP code Page CHECK POWER MODE E5h 6 2 DEVICE RESET 08h 6 4 EXECUTE DEVICE DIAGNOSTICS 90h 6 5 IDENTIFY DEVICE ECh 6 7 IDENTIFY PACKET DEVICE A1h 6 8 IDLE IMMEDIATE E1h 6 16 NOP 00h 6 18 PACKET A0h 6 19 READ SECTORS 20h 6 23 SET FEATURES EFh 6 24 SLEEP E6h 6 26 STANDBY IMMEDIATE E0h 6 28 ...

Страница 44: ...t of field is not applicable to the particular command Device Head register DEV indicates the selected device When the DEV bit is equal to zero Device 0 master is selected When the DEV bit is equal to one Device 1 slave is selected Normal outputs Register 7 6 5 4 3 2 1 0 Error na Sector Count Result value Sector Number na Cylinder Low na Cylinder High na Device Head 1 na 1 DEV na na na na Status B...

Страница 45: ...is completed DRDY is set to one DF is set to one if a device fault has occurred DSC is set to one DRQ is cleared to zero CHK is set to one if an Error register bit is set to one Prerequisites DRDY set equal to one Description If the Sony ATAPI Drive is in the Standby mode the Sony ATAPI Drive sets the BSY bit sets the Sector Count register to 0 00h clears the BSY bit and asserts INTRQ If the Sony ...

Страница 46: ...ylinder High na Device Head 1 na 1 DEV na na na na Command 08h Device Head register DEV indicates the selected device Normal outputs Register 7 6 5 4 3 2 1 0 Error Diagnostic Code Sector Count 01h Sector Number 01h Cylinder Low 14h Cylinder High EBh Device Head 1 na 1 DEV na na na na Status 00h Error outputs None This command cannot end in an error condition Prerequisites DRDY set equal to one Des...

Страница 47: ... 4 3 2 1 0 Features na Sector Count na Sector Number na Cylinder Low na Cylinder High na Device Head 1 na 1 DEV na na na na Command 90h The DEV bit in the Device Head register is ignored Normal outputs Register 7 6 5 4 3 2 1 0 Error Diagnostic code Sector Count 01h Sector Number 01h Cylinder Low 14h Cylinder High EBh Device Head 1 na 1 DEV na na na na Status BSY DRDY DF DSC DRQ 0 na CHK The diagno...

Страница 48: ...not present the host may see the information from Device 0 even though Device 1 is selected Error outputs Table 6 2 Diagnostic Codes shows the error information that is returned as a diagnostic code in the Error register Prerequisites This command is accepted regardless of the state of DRDY Description This command performs the internal diagnostic tests implemented by the device The DEV bit in the...

Страница 49: ...sponse to this command devices that implement the PACKET Command feature set shall post command aborted and place the PACKET Command feature set signature in the Command Block registers see Table 6 6 ATAPI Identification Signature Normal outputs Command must return error status Error outputs Register 7 6 5 4 3 2 1 0 Error 04h Sector Count 01h Sector Number 01h Cylinder Low 14h Cylinder High EBh De...

Страница 50: ...d bits on the respective data bus bit e g bit 15 appears on DD15 Inputs Register 7 6 5 4 3 2 1 0 Features na Sector Count na Sector Number na Cylinder Low na Cylinder High na Device Head 1 na 1 DEV na na na na Command A1h Device Head register DEV indicates the selected device Normal outputs Register 7 6 5 4 3 2 1 0 Error na Sector Count na Sector Number na Cylinder Low na Cylinder High na Device H...

Страница 51: ...s first bits 15 through 0 of the value on bits DD 15 0 respectively After the least significant bits have been transferred the most significant bits bits 31 through 16 of the value are transferred on DD 15 0 respectively Some parameters are defined as a string of ASCII characters For the string Copyright the character C is the first byte the character o is the 2nd byte etc When such fields are tra...

Страница 52: ...11 1 IORDY supported F 10 1 IORDY may be disabled F 9 1 LBA supported F 8 1 DMA supported X 7 0 Vendor specific 0000 1111 0000 0000 0F00h 50 R Reserved 0000h 51 52 F Obsolete 53 R 15 3 Reserved F 2 1 the fields reported in word 88 are valid F 1 1 the fields reported in words 64 70 are valid V 0 0 the fields reported in words 54 58 may be valid 0000 0000 0000 0110 0006h 54 R Reserved 0000h 55 R Res...

Страница 53: ...d PIO transfer modes supported 0000 0000 0000 0011 0003h 65 Minimum Multiword DMA transfer cycle time per word F 15 0 Cycle time in nanoseconds 0078h 120ns 66 Manufacturer s recommended Multiword DMA transfer cycle time F 15 0 Cycle time in nanoseconds 0078h 120ns 67 Minimum PIO transfer cycle time without flow control F 15 0 Cycle time in nanoseconds 00F0h 240ns 68 Minimum PIO transfer cycle time...

Страница 54: ...number 0000h or FFFFh device does not report version 0001h FFFEh Reserved 0013h 82 F Command set supported If words 82 and 83 0000h or FFFFh command set notification not supported 15 Obsolete 14 1 NOP command supported 13 0 READ BUFFER command not supported 12 0 WRITE BUFFER command not supported 11 Obsolete 10 0 Host Protected Area feature set not supported 9 1 DEVICE RESET command supported 8 0 ...

Страница 55: ...ommand enabled 12 0 WRITE BUFFER command enabled 11 Obsolete 10 0 Host Protected Area feature set enabled 9 1 DEVICE RESET command enabled 8 0 SERVICE interrupt not enabled 7 0 release interrupt not enabled 6 0 look ahead not enabled relates to Set Feature 55h AAh 5 0 write cache not enabled relates to Set Feature 02h 82h 4 1 PACKET Command feature set enabled 3 1 Power Management feature set enab...

Страница 56: ...ings and cable type 15 Shall be cleared to zero 14 Shall be set to one 13 1 device detected CBLID above ViH 0 device detected CBLID below ViL Device 1 hardware reset result Device 0 shall clear these bits to zero Device 1 shall set these bits as follows 12 Reserved 11 0 Device 1 did not assert PDIAG 1 Device 1 asserted PDIAG 10 9 These bits indicate how Device 1 determined the device number 00 Res...

Страница 57: ...60 175 R Reserved for assignment by the Compact Flash Association 176 254 R Reserved Integrity Word 15 8 Checksum 7 0 Signature 255 F V xxA5h Key F the content of the word is fixed and does not change For removable media devices these values may change when media is removed or changed V the content of the word is variable and may change depending on the state of the device or the commands executed...

Страница 58: ... Normal outputs Register 7 6 5 4 3 2 1 0 Error na Sector Count na Sector Number na Cylinder Low na Cylinder High na Device Head 1 na 1 DEV na Status BSY DRDY DF DSC DRQ na na CHK Device Head register DEV indicates the selected device Status register BSY is cleared to zero when the command is completed DRDY is set to one DF is cleared to zero DSC is set to one DRQ is cleared to zero CHK is cleared ...

Страница 59: ...s set to one if a device fault has occurred DSC is set to one DRQ is cleared to zero CHK is set to one if an Error register bit is set to one Prerequisites DRDY set equal to one Description The IDLE IMMEDIATE command allows the host to immediately place the Sony ATAPI Drive in the Idle mode INTRQ is asserted even though the Sony ATAPI Drive does not have fully transitioned to Idle mode ...

Страница 60: ...s command always fails with the device setting the ABRT bit to one Register 7 6 5 4 3 2 1 0 Error na ABRT na Sector Count Initial value Sector Number Initial value Cylinder Low Initial value Cylinder High Initial value Device Head Initial value Status BSY DRDY DF DSC DRQ na na CHK Error register ABRT is set to one Sector Count Sector Number Cylinder Low Cylinder High Device Head resisters Value se...

Страница 61: ...or Count na Sector Number na Byte count low Cylinder Low Byte count limit 7 0 Byte count high Cylinder High Byte count limit 15 8 Device Head 1 na 1 DEV 0 LUN 0 Command A0h Features register DMA bit is set to one to inform the device that the data transfer not the command packet transfer associated with this command is via DMA mode Sector Count and Sector Number registers These fields are not appl...

Страница 62: ...e following register content to initiate the data transfer Register 7 6 5 4 3 2 1 0 Error 00h Interrupt reason Sector Count Reserved 00h REL I O C D Sector Number na Byte count low Cylinder Low Byte count 7 0 Byte count high Cylinder High Byte count 15 8 Device Head 1 na 1 DEV na na na na Status BSY DRDY DF DSC DRQ na na CHK Byte count high low registers If the transfer is to be in PIO mode the by...

Страница 63: ...rrupt reason Sector Count Reserved 00h REL I O C D Sector Number na Byte count low Cylinder Low na Byte count high Cylinder High na Device Head 1 na 1 DEV na na na na Status BSY DRDY DF DSC DRQ na na CHK Byte count high low registers na Interrupt reason register REL is cleared to zero I O is set to one C D is set to one Device Head register DEV indicates the selected device Status register BSY is ...

Страница 64: ...g of this bit is command set specific See the appropriate command set standard for its definition Interrupt reason register REL is cleared to zero I O is set to one C D is set to one Device Head register DEV indicates the selected device Status register BSY is cleared to zero indicating the command is completed DRDY is set to one DF is set to one if a device fault has occurred DSC is set to one DR...

Страница 65: ...X 470V series Ver 1 0 6 23 6 9 Read Sectors 20h In response to this command devices that implement the PACKET Command feature set shall post command aborted and place the PACKET Command feature set signature in the Cylinder High and the Cylinder Low register see 6 1 2 ...

Страница 66: ...riptions Error outputs Register 7 6 5 4 3 2 1 0 Error na ABRT na Sector Count na Sector Number na Cylinder Low na Cylinder High na Device Head 1 na 1 DEV na Status BSY DRDY DF DSC DRQ na na CHK If any subcommand input value is not supported or is invalid the Sony ATAPI Drive sets the ABRT bit to one Error register ABRT is set to one if this subcommand is not supported or if value is invalid Device...

Страница 67: ...Ah PIO transfer mode 2 8 333 MByte s 0Bh PIO transfer mode 3 11 111 MByte s 0Ch PIO transfer mode 4 16 667 MByte s 20h Multiword DMA mode 0 4 167 MByte s 21h Multiword DMA mode 1 13 333 MByte s 22h Multiword DMA mode 2 16 667 MByte s 40h Ultra DMA mode 0 16 667 MByte s 41h Ultra DMA mode 1 25 000 MByte s 42h Ultra DMA mode 2 33 333 MByte s 43h Ultra DMA mode 3 44 444 MByte s 44h Ultra DMA mode 4 6...

Страница 68: ...ad 1 na 1 DEV na na na na Command E6h Device Head register DEV indicates the selected device Normal outputs Register 7 6 5 4 3 2 1 0 Error na Sector Count na Sector Number na Cylinder Low na Cylinder High na Device Head 1 na 1 DEV na Status BSY DRDY DF DSC DRQ na na CHK Device Head register DEV indicates the selected device Status register BSY is cleared to zero when the command is completed DRDY ...

Страница 69: ... Sony ATAPI Drive is not able to complete the action requested by the command Device Head register DEV indicates the selected device Status register BSY is cleared to zero when the command is completed DRDY is set to one DF is set to one if a device fault has occurred DSC is set to one DRQ is cleared to zero CHK is set to one if an Error register bit is set to one Prerequisites DRDY set equal to o...

Страница 70: ...tor Count na Sector Number na Cylinder Low na Cylinder High na Device Head 1 na 1 DEV na Status BSY DRDY DF DSC DRQ na na CHK Device Head register DEV indicates the selected device Status register BSY is cleared to zero when the command is completed DRDY is set to one DF is cleared to zero DSC is set to one DRQ is cleared to zero CHK is cleared to zero Error outputs Register 7 6 5 4 3 2 1 0 Error ...

Страница 71: ...t change the value of the DEV bit when writing the signature into the Device Head register for a device implementing the PACKET command feature set If the device implements the PACKET command feature set the signature is also written in the registers for the IDENTIFY DEVICE and READ SECTOR S commands This device implements the PACKET command feature set therefore the signature shall be Table 6 6 A...

Страница 72: ...6 ATA Command Specification Standby Immediate SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 6 30 This page intentionally left blank ...

Страница 73: ...2h 7 3 LOAD UNLOAD 1Bh Yes 7 7 LOCATE 2Bh Yes 7 8 LOG SELECT 4Ch 7 9 LOG SENSE 4Dh 7 12 MODE SELECT 15h 7 30 MODE SENSE 1Ah 7 32 PREVENT ALLOW MEDIUM REMOVAL 1Eh 7 48 READ 08h Yes 7 49 READ BLOCK LIMITS 05h 7 51 READ BUFFER 3Ch 7 52 READ POSITION 34h Yes 7 54 RECEIVE DIAGNOSTIC RESULTS 1Ch 7 56 RELEASE UNIT 17h 7 58 REQUEST BLOCK ADDRESS 02h Yes 7 59 REQUEST SENSE 03h 7 60 RESERVE UNIT 16h 7 68 RE...

Страница 74: ...l be written on the medium that indicates the end of recorded data An Immed immediate bit of zero indicates the Device shall not return status until the operation has completed An Immed bit of one indicates that the target shall return status as soon as all buffered commands have completed execution and the CDB has been validated If CHECK CONDITION status is returned when the Immed bit is set to o...

Страница 75: ...e page or operation code field is reserved or not implemented by the target the target shall terminate the command with a CHECK CONDITION status The sense key shall be set to ILLEGAL REQUEST When the CmdDT bit is set to one the page or operation field specifies the operation code for which the drive shall return support data EVPD The Enable Vital Product Data EVPD bit of one specifies that the dri...

Страница 76: ...all not be adjusted to reflect the truncation ASCII data fields shall contain only graphic codes i e code values 20h through 7Eh Left aligned fields shall place any unused bytes at the end of the field highest offset and the unused bytes shall be filled with space characters 20h Right aligned fields shall place any unused bytes at the start of the field lowest offset and the unused bytes shall be ...

Страница 77: ...ed 00h 3 Page Length 0Ah 4 13 Product Serial Number in ASCII The page length field specifies the length of the product serial number If the allocation length is too small to transfer all of the page the page length shall not be adjusted to reflect the truncation The product serial number field contains ASCII data that is vendor specific The least significant ASCII character of the number shall app...

Страница 78: ...ation code it shall return the peripheral qualifier and type and 001h in the Support field Table 7 6 INQUIRY Command Support Data Page Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier Peripheral Device Type 01h 1 Reserved 00h Support 03h 2 ISO Version 0 ECMA Version 0 ANSI Approved Version 02h 3 Reserved 00h 4 Reserved 00h 5 CDB size m 5 6 m CDB Usage Data Support The drive supports the tested oper...

Страница 79: ...r removal etc An EOT bit of one and a Load bit of one shall cause the drive to return CHECK CONDITION status The sense key shall be set to ILLEGAL REQUEST and the additional sense code shall be set to ILLEGAL FIELD IN CDB If the Load bit is set to one the medium shall be loaded and positioned to the beginning of partition zero If the Load bit is zero the medium in the Device shall be positioned fo...

Страница 80: ...LEGAL REQUEST sense key will be returned CP A Change Partition CP bit of one indicates that a change to the partition specified in the partition field is to occur prior to positioning to the block specified in the Block Address field A CP bit of zero indicates no partition change is to be made and the partition field is to be ignored Immed An immediate Immed bit of zero indicates the Device shall ...

Страница 81: ...rted by this device and shall always be set to ZERO If the SP bits is set the command will be terminated with CHECK CONDITION status with the sense key set to ILLEGAL REQUEST and an additional sense code of INVALID FIELD IN CDB PC The Page Control field defines the type of parameter values to be selected Table 7 7 LOG PAGE Page Control Field Values Value Description 00b Current Threshold Values 01...

Страница 82: ...also being cleared and vice versa Because of this method of clearing the log pages the Parameter List Length field must be an integer multiple of the Log Page Header length i e 4 Otherwise the command will be terminated with a CHECK CONDITION status with the sense key set to ILLEGAL REQUEST and an additional sense code of INVALID FIELD IN CDB If multiple pages are sent during the Data Transfer the...

Страница 83: ...rned and no new data will be written to MIC If there is existing User Volume Note data but no User Partition Note data then User Volume Note length may be equal to the Available Free Byte Count 3 If there is User Partition 00 Note data but no User Partition 01 Note data User Partition 01 Note data will be created for the specified Length if it does not exceed the Available Free Byte Count If there...

Страница 84: ... returned to the initiator If the PPC bit is set or the Parameter Pointer is larger than the highest numbered parameter on the page then the target shall terminate the command with CHECK CONDITION status The sense key shall be set to ILLEGAL REQUEST and the additional sense code shall be set to INVALID FIELD IN CDB If the drive does not support a parameter code within this page then it shall not r...

Страница 85: ...ample if a page supported parameters 0 through 5 and the Parameter Pointer field contained 3 then only parameters 3 4 and 5 would be returned to the initiator Similarly if a page supported parameters 1 3 and 6 and the Parameter Pointer field contained 2 then only parameters 3 and 6 would be returned to the initiator Note that parameters within a page are always returned in ascending order accordin...

Страница 86: ...al data structures called log parameters These may be data counters which record the occurrence of certain events or they may be more complex structures which describe activities or other events which occur within the device Each parameter structure begins with a 4 byte parameter header followed by one or more bytes of parameter structure data The 4 byte header is shown below Table 7 13 LOG PAGE P...

Страница 87: ...ue is updated it shall be compared to the threshold parameter value and the action specified by the TMC field shall be taken An ET bit of ZERO disables this comparison The ET bit is the same for both the cumulative and threshold log parameter Thus when the ET bit is set to a value by the initiator this value is returned for both the cumulative and threshold values of the log parameter TMC The thre...

Страница 88: ...h Information Page for MIC 334h MIC Phase 1 37Ch AIT mode 2k MIC 4A8h AIT mode 8k MIC 3Eh AIT Variable Length Information Page for MIC n Summary List of Supported Pages The summary list of supported log pages returns the list of page codes supported by the target This page is only valid for the Log Sense command and if sent to the host during a Log Select command will cause termination with CHECK ...

Страница 89: ...eters Code Description Parameter Length Bytes Default Cumulative Default Threshold 0003h Total Errors Corrected Soft Errors 2 0 FFFFh 0004h Total Times Correction 4 0 FFFFFFFFh 0005h Total Groups Processed Algorithm Processed 4 0 FFFFFFFFh 0006h Total Errors Uncorrected Hard Errors 2 0 FFFFh 7 6 5 Last N Error Events List Page Code 07h This page is used to report information on soft and hard error...

Страница 90: ...s a Sony unique page which provides information on the tape currently being used This log cannot be cleared and has the following format Table 7 20 LOG PAGE Tape Log 30h Bit Byte 7 6 5 4 3 2 1 0 0 Reserved Page Code 30h 1 Reserved 2 MSB 3 Page Length 58h LSB 4 MSB 5 Parameter Code LSB 6 0 DU 1 DS 0 TSD 0 ETC 00 TMC Reserved 0 LP 7 Parameter Length 0Ah 8 17 Parameter Value This page is used to retu...

Страница 91: ...o change this page using LOG SELECT will result in a CHECK CONDITION with a Sense Key of ILLEGAL REQUEST The current cumulative values will be returned regardless of the Page Control field n the LOG SENSE CDB 7 6 7 Tape Capacity Log Page The tape Capacity Log Page is used to indicate the approximate capacity of the tape currently being used The PC field of the LOG SENSE command is ignored for this...

Страница 92: ...ve currently being used This log cannot be cleared and has the following format Table 7 23 LOG PAGE Drive Usage 33h Bit Byte 7 6 5 4 3 2 1 0 0 Page Code 33h 1 Reserved 2 MSB 3 Page Length 008Ah LSB 4 MSB 5 Parameter Code LSB 6 0 DU 1 DS 0 TSD 0 ETC 0 TMC Reserved 0 LP 7 Parameter Length m 8 MSB 7 m Parameter Value LSB This page is used to return the vendor unique Drive Usage Log information to the...

Страница 93: ...inch On 36h Pinch Off 37h Diagnostics 80h 7 6 9 Read and Write Frame Error Counter Page Codes 34h 35h The Read Write Error Counter Page has the following format All fields in these logs are initialized to ZERO in the following circumstances At Power ON After a cassette loading After a user sends a request for initialization through Log Select After a reset Following configuration for error rate te...

Страница 94: ...wing format Table 7 28 LOG PAGE Data Compression Transfer 39h Bit Byte 7 6 5 4 3 2 1 0 0 Reserved Page Code 39h 1 Reserved 2 MSB 3 Page Length 58h LSB 4 MSB 5 Parameter Code n LSB 6 0 DU 1 DS 0 TSD 0 ETC 00 TMC Reserved 0 LP 7 Parameter Length 4 8 11 Parameter Value Data Compression Log Page Fields Supported Parameter Codes in this page and their meanings are as follows Parameter Code Description ...

Страница 95: ...Tape Log of each field is larger than the legacy Tape Log Page The legacy Tape Log Page returns the part of AIT original This page has the following format Table 7 29 LOG PAGE AIT 3Ch Bit Byte 7 6 5 4 3 2 1 0 0 Reserved Page Code 3Ch 1 Reserved 2 MSB 3 Page Length n 1 LSB 4 MSB 5 Parameter Code 0001h 0012h and 0101h 0112h LSB 6 0 DU 1 DS 0 TSD 0 ETC 00 TMC Reserved 0 LP 7 Parameter Length n 7 8 n ...

Страница 96: ...ndicates the Partition Number 7 6 12 MIC Fixed Length Information Log Page Code 3Dh This page has the following format Table 7 30 LOG PAGE MIC Fixed Length Information 3Dh Bit Byte 7 6 5 4 3 2 1 0 0 Reserved Page Code 3Dh 1 Reserved 2 MSB 3 Page Length n 1 LSB 4 MSB 5 Parameter Code LSB 6 0 DU 1 DS 0 TSD 0 ETC 00 TMC Reserved 0 LP 7 Parameter Length n 7 8 n Parameter Value Supported Parameter Code...

Страница 97: ...it map ordering of the Partition Note data A 1 in the bit field for the partition indicates there is Partition Note in MIC a 0 in the bit field indicates there is no Partition Note in MIC for that partition As an example if partition 0 and partition 1 have Notes data Byte 0 below will be 0C0h and Byte 1 to 31 will be 00h 4 Parameter Code 0017h Drive Element Address data field is reserved The drive...

Страница 98: ...ufacturer ID ASCII Code 37 Secondary ID ASCII Code 38 Check Sum 39 Reserved Bit Byte 7 6 5 4 3 2 1 0 0 MSB 1 Parameter Code 0007h 0013h LSB 2 0 DU 1 DS 0 TSD 0 ETC 00 TMC Reserved 0 LP 3 Parameter Length 36 4 39 Reserved Bit Byte 7 6 5 4 3 2 1 0 0 MSB 1 Parameter Code 0014h LSB 2 0 DU 1 DS 0 TSD 0 ETC 00 TMC Reserved 0 LP 3 Parameter Length 32 4 msb for the Partition 0 256 bits of Map 35 lsb for t...

Страница 99: ...ber of Groups Written 40 Reserved 41 43 Total RAW Retries 44 47 Total Number of Groups Read 48 Reserved 49 51 Total C3 ECC Retries 52 Reserved 53 55 Load Count 56 59 Access Count 60 63 Update Replace Count 64 Reserved 65 Reserved Bit Byte 7 6 5 4 3 2 1 0 0 MSB 1 Parameter Code 0016h LSB 2 0 DU 1 DS 0 TSD 0 ETC 00 TMC Reserved 0 LP 3 Parameter Length 94 4 23 Reserved Eject Status 24 27 Reserved Ree...

Страница 100: ...rmation Log Page Code 3Eh Page 3Eh is a variable length page which is not defined by ANSI This page is Sony Vendor Unique Note 1 Only one Parameter Code in Page 3Eh should be handled at a time 2 Byte position 3 of Parameter Code in Page 3Eh is Reserved Should be set to ZERO 3 Parameter Length for the contents of the Parameter Code in Page 3Eh is stored at byte position 4 and 5 4 The Page Length fi...

Страница 101: ...Reserved 4 MSB 5 User Data Length LSB 6 MSB N User Data LSB Note 1 If there is no Note data in MIC for the Parameter Code specified in the CDB a Check Condition status will be returned 2 If the CDB allocation length is ZERO a Good status is always returned and there is no data transfer 3 If the CDB allocation length is non ZERO and there is data in MIC for the Parameter Code data will be returned ...

Страница 102: ...ive receives a Software Reset or a Hardware Reset PF The Page Format bit indicates that the data sent by the Host after the MODE SELECT header and block descriptors complies with the definition of pages as set out in SCSI 2 SP The Save Parameters bit instructs the drive to save all savable pages This bit is not supported and the drive will return a CHECK CONDITION status with an ILLEGAL REQUEST se...

Страница 103: ...locks and block length fields Density Code The supported values for the density code field are defined in the following table Note 00h Default instructs the drive to use its default or only density Table 7 33 Sequential Access Density Codes Page Code Description 00h Default Format 30h AIT 1 Format 38h AIT E Turbo Format 39h AIT 1 Turbo Format 7Fh No change from previous density Number of Blocks A ...

Страница 104: ...that implement more than 255 bytes of mode page parameter data and block descriptors shall return Check Condition status to a MODE SENSE request of 3Fh in the page code field The Sense Key shall be set to ILLEGAL REQUEST and the Additional Sense Code shall be set to INVALID FIELD IN CDB The Drive returns the current parameter values for the specified page code The current values returned are 1 The...

Страница 105: ...he media value will be 34h as only one media type is supported WP A Write Protected bit of ZERO indicates that the tape is write enabled A Write Protected bit of one indicates that the tape is write protected The block descriptor length specifies the length in bytes of all the block descriptors It is equal to the number of block descriptors times eight and does not include pages or vendor specific...

Страница 106: ...a Compression Page which has the following format Table 7 37 MODE PAGE Data Compression 0Fh Bit Byte 7 6 5 4 3 2 1 0 0 PS Reserved Page Code 0Fh 1 Page Length 0Eh 2 DCE DCC Reserved 3 DDE RED Reserved 4 MSB 5 6 7 Compression Algorithm LSB 8 MSB 9 10 11 Decompression Algorithm LSB 12 Reserved 13 Reserved 14 Reserved 15 Reserved This page specifies the parameters for the control of data compression ...

Страница 107: ...re decompression For any of the boundary conditions which result in a CHECK CONDITION status the additional sense code shall be set to either DECOMPRESSION EXCEPTION ALGORITHM ID OF NN The drive will set the decompression algorithm field to the algorithm identifier of the compression algorithm used to process the encountered data The device shall be positioned on the EOP side of the encountered da...

Страница 108: ...ive Partition bit when set to one indicates that the partition is changed to the one specified by the Active Partition Field This is a feature supported by the drive and is discussed below CAF The Change Active Format bit set to one indicates that the active format is to be changed to that set in the Active Format Field Active Format This field is used to enable AIT format options and is described...

Страница 109: ...ondition on reads but will report early warning on writes at a distance of 2 500 mm before the physical End Of Partition The REW bit is changeable A value of ONE indicates that the drive will report the early warning condition on writes and reads Gap Size This field is not used by the SDX 470V and shall be set to ZERO otherwise a CHECK CONDITION with an ILLEGAL REQUEST sense key will be returned E...

Страница 110: ...ever it accepts all values as don t care This number is the maximum number of additional partitions supported Additional Partitions Defined This field specifies the number of additional partitions to be defined for the tape based on the IDP bit The maximum allowed is the value returned in the Maximum Additional Partitions field FDP The Fixed Data Partitions bit is not supported by the drive and if...

Страница 111: ...n ILLEGAL REQUEST Sense Key set Medium Format Recognition This field is only valid on a MODE SENSE and is set to 03h to indicate that the drive is capable of format and partition recognition This is non changeable field It accepts all the value however always returns 1 Partition Sizes This field allows the host to allocate the capacity of each partition It will also allow the host to reallocate th...

Страница 112: ...epts all values as a don t care The field value represents the maximum number of additional partitions supported and it is limited by the free memory available in MIC as well as the AIT Format limit of 256 partitions SDX 470V calculates how many partitions can be created for the current media for example you can make up to 14 partitions with net total 13 bytes of the User Volume Note and User Part...

Страница 113: ...edium Partitions Parameter page PSUM Partition Size Unit of Measured field defines the units in which the Partition Size value selects the partition size which in the case of this drive is Megabytes Therefore the drive returns 10b for a MODE SENSE and will only accept this value for a MODE SELECT otherwise a CHECK CONDITION status is returned with an ILLEGAL REQUEST Sense Key set Medium Format Rec...

Страница 114: ... Length 0Ah 2 Perf 0 Reserved 0 Dexcpt Test Reserved LogErr 0 3 Reserved MRIE 4 MSB 7 Interval Timer 00 00 00 00h LSB 8 MSB 11 Report Count Test Flag Number LSB LogErr Log Error bit LogErr of ZERO indicates that the logging of informational exception conditions by a drive is vendor specific This bit of one indicates the drive shall log informational exception conditions Dexcpt The Disable Exceptio...

Страница 115: ... which is never returned in response to a MODE SENSE command Valid values of Test Number are 64 to 64 and 32767 7FFFh Negative numbers are represented using the 2 s complement method If the Test Flag Number is set to an invalid value the MODE SELECT command will return CHECK CONDITION with sense key set to ILLEGAL REQUEST and extended sense set to Invalid Field in Parameter list 7 8 7 AIT Device C...

Страница 116: ...ffects the drive itself 0 Power On immediate Eject disable If this bit set to 0 then the cassette will stay in the drive when power is applied default 1 Power On immediate Eject enable If this bit set to 1 then the cassette will be immediately ejected when power is applied to the drive Span The Span field is in binary notation This field is unchangeable When MIC cartridge is inserted this field is...

Страница 117: ...on Size value selects the partition size which in the case of this drive is Megabytes Therefore the drive returns 10b for a MODE SENSE and will only accept this value for a MODE SELECT otherwise a CHECK CONDITION status is returned with an ILLEGAL REQUEST Sense Key set Partition units The Partition Size Units of Measure PSUM field defines the units used in the partition size descriptors A logical ...

Страница 118: ...Command is available in the AIT mode and only for an AIT mode cassette The SDX 470V rewinds the tape to Bottom of Active Partition after Delete Partition Delete Partition is System area in the Active partition 7 8 10 Capabilities and Mechanical Status Page 2Ah The drive supports the AIT Device Configuration Page which has the following format Table 7 45 MODE PAGE Capabilities and Mechanical Status...

Страница 119: ...lly unload the volume with the LOAD UNLOAD command The PREVENT bit is cleared indicating the Device does not default in the Prevent state after power up If the LOCKED bit is set the volume is locked The LOCK bit is set indicating the Device supports locking the volume using the ALLOW PREVENT MEDIUM REMOVAL command The BLK1024 bit is set indicating the Device is capable of using a 1024 byte block s...

Страница 120: ... Software RESET 3 After the host issues a PREVENT ALLOW MEDIUM REMOVAL command with a prevent bit of ZERO and the target has successfully performed a synchronize cache operation While a prevention of medium removal condition is in effect the device shall inhibit mechanisms that normally allow removal of the medium by an operator Prevent When this bit is set the drive will not eject the tape follow...

Страница 121: ...d data into buffer A successful READ command shall transfer the requested Transfer Length times the current block length in bytes Upon completion the logical position shall be after the last block transferred EOP side If an incorrect length block is read Check Condition status shall be returned and the ILI and Valid bits shall be set to one in the sense data Upon termination the logical position s...

Страница 122: ... Block Length or in blocked mode the difference residue between the requested number of blocks and the actual number of blocks read not including the incorrect length block No more than Transfer Length bytes are transferred to the host and the tape is logically positioned after the block EOM side If the drive reads a File mark during this command it sets the File mark bit in the REQUEST SENSE data...

Страница 123: ...eturn its limits for Block Length The READ BLOCK LIMITS data shown below will be sent during the DATA transfer phase of the command The command does not reflect the currently selected block size only the available limits of the fixed mode block size MODE SENSE returns the current block size 2 bytes is the minimum and 16 Mbytes 2 byte is the maximum block size which the unit can support Table 7 46 ...

Страница 124: ... supports the following values within the Mode field If any other value is set the drive will terminate the command with a CHECK CONDITION status and an ILLEGAL REQUEST sense key set Table 7 47 Read Buffer Mode Values Mode Description 000b Combined Header and Data 010b Data 011b Descriptor Combined Header and Data Mode in this mode the drive returns a four byte header followed by the data bytes Th...

Страница 125: ...contains the byte offset within the specified buffer from which data shall be transferred The host should conform to the offset boundary requirements returned in the READ BUFFER descriptor If the target is unable to accept the specified buffer offset it shall return CHECK CONDITION status shall set the Sense Key to ILLEGAL REQUEST and set the Additional Sense Code to ILLEGAL FIELD IN CDB Allocatio...

Страница 126: ...command is rejected with a CHECK CONDITION status and an ILLEGAL REQUEST sense key set BT The Block Address type BT bit controls the content of the short format data The BT bit if one requests the drive to return its current First Block Location shall include data block only The BT bit of ZERO requests the drive to return the First Block Location as a Logical Block Address data blocks File marks a...

Страница 127: ...ock Position Unknown BPU bit of ONE indicates the partition number or block number are not know or accurate reporting is not currently available The BPU bit of ZERO indicates the partition number and block number fields contain valid position information MPU The Mark Position Unknown MPU bit of ONE indicates the file number and set number are not known or accurate reporting is not currently availa...

Страница 128: ...s will as eight bytes of the diagnostic result If the PF bit was not set the drive returns only the eight bytes of the diagnostic result The drive terminates the data transfer when Allocation Length bytes have been transferred or when all the available diagnostic data four or eight bytes depending on the PF bit have been transferred to the host whichever is less If the drive returns a CHECK CONDIT...

Страница 129: ...results data Bit Byte 7 6 5 4 3 2 1 0 0 Reset Error Time Re Sync Reserved Error Set 1 Error Code 2 Result A 3 Result B 4 Test Number Reset error This bit is set when an error occurs during power on self test Time Re Sync This bit indicates that the time stamp saved with the error log has no relation to that of the previous entry It is only set by the logging routine within the data buffer as an er...

Страница 130: ... the requesting host It is not an error to attempt to release the drive if it is not currently reserved 3rdPty The Third Party release option for the RELEASE UNIT command allows a host to release a logical unit that was previously reserved using the Third Party reservation option If the 3rdPty bit is ZERO then the Third Party release option is not requested If the 3rdPty bit is one then the drive ...

Страница 131: ...n conjunction with the SEEK BLOCK 0Ch command Note This command is similar in function to the SCSI 2 READ POSITION command and is supported by the SDX 470V to allow backward compatibility with QIC 104 type devices Blocks are numbered sequentially starting with 0 at BOT Each Block File mark or Save Set Mark after BOT adds one to the count Allocation Length Indicates the number of bytes of the Block...

Страница 132: ... of the REQUEST SENSE command the Device shall return the sense data with Good status If a Device returns Check Condition status for a REQUEST SENSE command the sense data may be invalid Devices shall be capable of returning at least 20 bytes of data in response to a REQUEST SENSE command If the allocation length is 20 or greater and a Device returns less than 20 bytes of data the Host should assu...

Страница 133: ...that an end of medium condition end of partition beginning of partition exists For Streaming Tape Devices this bit indicates that the unit is at or past the early warning if the direction was forward or that the command could not be completed because beginning of partition was encountered if the direction was reverse For WRITE type operations the drive will return a CHECK CONDITION on any operatio...

Страница 134: ...able 7 57 Sense Key Specific Values Bit Byte 7 6 5 4 3 2 1 0 15 SKSV C D Reserved Reserved BPV Bit Pointer 16 MSB 17 Field Pointer LSB C D When this bit is set it indicates that the illegal parameter is in the Command Descriptor Block A C D bit of ZERO indicates that the illegal parameter is in the data parameters sent by the Host BPV The Bit Pointer Valid bit set indicates that the value in the B...

Страница 135: ... execution of a REQUEST SENSE command shall return the deferred error sense information If an I O Command terminates with Check Condition status and the subsequent sense data returns a deferred error that I O command shall not have been executed After the Device detects a deferred error condition it shall return a deferred error according to the rules described below 1 If a deferred error can be r...

Страница 136: ... may be required to correct this condition Typically this indicates that there is no tape loaded This status is also returned if the drive is currently rewinding following REWIND with Immediate bit set and another command is received except for INQUIRY and READ BLOCK LIMITS which return GOOD status 04 00 LOGICAL UNIT NOT READY Media is present within the drive This status is returned to any tape m...

Страница 137: ...aused by head clogging or media damage 14 03 14 03 END OF DATA NOT FOUND While Reading a AIT format tape the drive encountered blank unformatted media during a Read operation This error could be caused by serious head clogging 15 02 POSITIONING ERROR DETECTED BY READ OF MEDIUM Cannot find destination Group during Space operation 27 04 PERSISTENT WRITE PROTECT Append Position Error for WORM 30 00 I...

Страница 138: ...ut altering the medium If the target detects an invalid parameter in the additional parameters supplied as data then the target may have already altered the medium This sense key may also indicate that an invalid IDENTIFY message was received 1A 00 PARAMETER LIST LENGTH ERROR Indicates that the Parameter Length error in the Command Descriptor Block Either the value does not fall on a Header Page o...

Страница 139: ...erformed 27 00 WRITE PROTECTED Cassette is Write Protected 07h 83 0B 83 0B BROKEN MIC Cassette is Write Protected BLANK CHECK Indicates the drive encountered blank medium or end of data indication while reading 00 00 NO ADDITIONAL SENSE INFORMATION Blank Tape was encountered at BOT 08h 00 05 END OF DATA DETECTED During READ or SPACE command Vendor Specific 83 08 MIC is not formatted yet 83 0B MIC ...

Страница 140: ...ated by the drive returning a CHECK CONDITION status with a sense key of UNIT ATTENTION on the next command following the condition It is not an error for a host to issue RESERVE UNIT to the drive if the drive is currently reserved by that host 3rdPty The Third Party Reservation option allows host to reserve the drive for another device This option is intended for systems that use the COPY command...

Страница 141: ...ng of partition in the current partition Prior to performing the rewind operation the Device shall ensure that all buffered data and filemarks have been transferred to the medium An Immed immediate bit of zero indicates the Device shall not return status until the operation has completed An Immed bit of one indicates that the target shall return status as soon as all buffered commands have complet...

Страница 142: ...ITION status with an ILLEGAL REQUEST sense key set After the Self Test a LOAD command is required to bring the drive online DevOfl Device Off line is not supported and shall be set to ZERO otherwise the driver will return a CHECK CONDITION status with an ILLEGAL REQUEST SENSE key set UnitOfl This bit must be set for proper operation of any diagnostic test except Self Test If this bit is not set ex...

Страница 143: ...p Count Identifier 2 Parameter A 3 Parameter B 4 Parameter C Diagnostic Test Number Number identifying which test to execute Break Indicates how to terminate the loop count should an error occur 0 stop on first error 1 do not stop on error Loop Count Identifier The number of times that the test should be repeated before status is returned 0 Continuous 1 run once 2 run 10 times 3 run 100 times 4 ru...

Страница 144: ...BLANK CHECK and the Valid bit shall be set to one in the sense data Additionally the EOM bit shall be set to one if end of data is encountered at or after early warning The Information field shall be set to the difference residue of the requested count minus the actual number of filemarks spaced over If the end of partition is encountered while spacing forward over filemarks Check Condition status...

Страница 145: ...he EOM side of the mark if movement was in the forward direction and on the BOM side of the mark if movement was in the reverse direction Note b The Information field is set to the difference residue between the requested count and the actual number of blocks file marks Set marks or spaced over Note c The Information field will contain no residue count and therefore the Valid bit is not set Note d...

Страница 146: ...Additional Sense keys in the Returned Sense data are set to indicate that a Save Set Mark has been encountered The information bytes are set to the difference residue in the requested count and the actual number of blocks or Save Set Marks spaced over not including the detected Save Set Mark If End of Data is detected while spacing over blocks or marks the Valid bit and the Additional Sense Keys i...

Страница 147: ...dition status this command shall return a Good status If the Device cannot become operational or is in a state such that Host action is required to make the unit ready the Device shall return Check Condition status with a Sense Key of NOT READY The TEST UNIT READY command is useful in that it allows the Host to poll a Device until it is ready without the need to allocate space for returned data It...

Страница 148: ...AD Upon completion of VERIFY the logical position is located after the last block from which data was verified or after the File mark or Set mark if one is encountered When the Verification Length is ZERO no data is verified and the current logical position is not be changed If the actual block length is different from the Verification Length a CHECK CONDITION status is returned Within the Sense d...

Страница 149: ...o ZERO the information bytes will be set to the difference residue between the requested Verification Length and the actual number of bytes verified File marks and Set marks are considered to have a byte count of ZERO though this does not cause the ILI bit to be set VERIFY may return the following sense keys on a CHECK CONDITION NO SENSE If the actual block length is different from the specified V...

Страница 150: ...E SELECT The current block length is the block length defined in the MODE SELECT command Upon termination the tape is logically positioned after these blocks EOM P side If EOT is detected while writing the drive will finish writing any buffered data The command will terminate with CHECK CONDITION status Within the Sense data the EOM bit is set the Sense Key field is set to NO SENSE and the Additio...

Страница 151: ...ovided for downloading firmware Note The drive will write any buffered data to tape prior to executing this command Any data that is then transferred by the WRITE BUFFER is not written to tape Mode The drive supports the following values within the Mode field If any other value is set the drive will terminate the command with a CHECK CONDITION status and an ILLEGAL REQUEST sense key set Table 7 16...

Страница 152: ...criptor If the target is unable to accept the specified buffer offset it shall return CHECK CONDITION status shall set the Sense Key to ILLEGAL REQUEST and set the Additional Sense Code to ILLEGAL FIELD IN CDB Parameter List Length The Parameter List Length specifies the maximum number of bytes that will be transferred during DATA TRANSFER The host should attempt to ensure that the Parameter List ...

Страница 153: ... status will not be returned until the operation has completed A Transfer Length of one enables the writing of the filemark A Transfer Length of zero can be also be used to synchronize flush any buffered data If the Device encounters early warning during WRITE FILEMARK operation any buffered data or filemarks shall be written to the medium and a Check Condition will exist If all buffered data and ...

Страница 154: ...7 ATAPI Packet Command Specification WRITE FILEMARK SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 7 82 This page intentionally left blank ...

Страница 155: ... allowing all tests and test sequences to be initiated via the host interface Similarly all test results are reported back to the host via the interface Manufacturing needs are satisfied by providing unrestricted access to all internal tests 8 2 Diagnostic Test This clause describes the Diagnostic Test facilities of the drive The method for executing tests and receiving test results from the Host ...

Страница 156: ...tself to verify that it is functioning normally The Self Test bit in the SEND DIAGNOSTIC command is set to one and the Parameter List Length is ZERO This initiates the Self Test Diagnostic which is similar to the Power on self test except that non destructive RAM testing is substituted for the destructive RAM tests If an error is detected during this test the drive will return CHECK CONDITION stat...

Страница 157: ...ode 81h 1 Reserved 2 MSB 3 Page Length 00 05h LSB 4 Diagnostic Test Number 5 Break Loop Count Identifier 6 Parameter A 7 Parameter B 8 Parameter C Break Indicates how to terminate the loop count should an error occur 0 stop on first error 1 do not stop on error Loop Count Identifier The number of times that the test should be repeated before status is returned 0 Continuous 1 run once 2 run 10 time...

Страница 158: ...or each Test Sequence or Exerciser is shown in the first column Test Availability Codes P Power onSelf test H Host Diagnostics PH both Sequence Test 00 Reset Sequence 61 63 71 72 77 79 80 81 30 H 02 Error Rate Test H Mechanism Controller Kernel Test 20 Mechanism Controller Microprocessor Test P Drive Exerciser 43 Read Data Exerciser H Main Processor Kernel Test 61 Main Processor ROM checksum P 62 ...

Страница 159: ...e Sync This bit indicates that the time stamp saved with the error log has no relation to that of the previous entry It is only set by the logging routine within the data buffer as an error is logged Error set Two set of error codes exist The definition of the error is dependent upon when set is taken from as follows 0 Runtime errors 2 Drive diagnostic errors Error code Error codes for each error ...

Страница 160: ... ENCOUNTERED 89h BOT SENSOR NG 31h EOM ENCOUNTERED 8Ah EOT SENSOR NG 32h BLANK ENCOUNTERED 8Eh SNAPPED TAPE 33h NON SDX ENCOUNTERED 90h FEW S REEL NG 34h SUBCODE UNCERTAIN 91h FEW T REEL FG 35h ECC UNCORRECTABLE 92h RF BOARD HIGH TEMP 36h SYSTEM AREA UNCERTAIN 94h TAPE SLACK 37h BOM ENCOUNTERED 95h TAPE SLCAK LONG TERM OCCURRED 3Ah READ FRAME OVER A0h DRUM SPEED OUT OF RANGE 3Bh SYSTEM AREA TIME O...

Страница 161: ... test reads or writes the number of groups defined by the Group Count Any RAW retries C3 ECC retries and Read Write hard errors encountered during the test are reported in the Error Rate Log which may then be examined to determine tape performance Table 8 5 Error Rate Test Data Bit Byte 7 6 5 4 3 2 1 0 0 Diagnostic Test Number 02h 1 Loop Count 2 Test Pattern BOT RND WRT RD NLR 3 MSB 4 Group Count ...

Страница 162: ...be initialized before the test 1 Drive Log will not be initialized Group Count This defines the number of groups to be written to or read from the tape 0 Write until EOT or Read until EOD EOM 0 Write until count is exhausted or EOM Read until count is exhausted or EOD EOM If EOM is encountered during Write EOD will not be written In all cases encountering EOM will be recorded as a hard error The D...

Страница 163: ...umber of frames specified in this field Table 8 9 Read Data Exerciser Result Bit Byte 7 6 5 4 3 2 1 0 0 Reset Error Tine Re Sync Reserved Error Set 1 Error Code 2 MSB 3 Number of loops executed LSB 4 Diagnostic Test Number 43h The results message will contain the number of loops executed during the test This test will result in a loss of logical tape position and therefore a load should be sent be...

Страница 164: ...8 Drive Diagnostics SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 8 10 This page intentionally left blank ...

Страница 165: ...ATA DETECTED 14 03 END OF DATA NOT FOUND 00 02 END OF PARTITION MEDIUM DETECTED 5D 00 FAILURE PREDICTION THRESHOLD EXCEEDED 00 01 FILEMARK DETECTED 30 00 INCOMPATIBLE MEDIUM INSTALLED 11 08 INCOMPLETE BLOCK READ 48 00 INITIATOR DETECTED ERROR MESSAGE RECEIVED 55 04 INSUFFICIENT REGISTRATION RESOURCES 44 00 INTERNAL TARGET FAILURE 3D 00 INVALID BITS IN IDENTIFY MESSAGE 20 00 INVALID COMMAND OPERATI...

Страница 166: ...METER NOT SUPPORTED 26 02 PARAMETER VALUE INVALID 2A 00 PARAMETERS CHANGED 47 00 PARITY ERROR 03 00 PERIPHERAL DEVICE WRITE FAULT 27 04 PERSISTENT WRITE PROTECT 15 02 POSITIONING ERROR DETECTED BY READ OF MEDIUM 29 00 POWER ON RESET OR BUS DEVICE RESET OCCURRED 2A 05 REGISTRATION PREEMPTED 2A 03 RESERVATION PREEMPTED 3B 08 REPOSITION ERROR 39 00 SAVING PARAMETER NOT SUPPORTED 45 00 SELECT OR RESEL...

Страница 167: ...RITE ERROR 11 00 UNRECOVERED READ ERROR 11 08 INCOMPLETE BLOCK READ 14 03 END OF DATA NOT FOUND 15 01 MECHANICAL POSITIONING ERROR 15 02 POSITIONING ERROR DETECTED BY READ OF MEDIUM 1A 00 PARAMETER LIST LENGTH ERROR 20 00 INVALID COMMAND OPERATION CODE 24 00 INVALID FIELD IN CDB 25 00 LOGICAL UNIT NOT SUPPORTED 26 00 INVALID FIELD IN PARAMETER LIST 26 01 PARAMETER NOT SUPPORTED 26 02 PARAMETER VAL...

Страница 168: ...MESSAGE 3E 00 LOGICAL UNIT HAS NOT SELF CONFIGURED YET 3F 01 MICROCODE HAD BEEN CHANGED 43 00 MESSAGE ERROR 44 00 INTERNAL TARGET FAILURE 45 00 SELECT OR RESELECT FAILURE 47 00 PARITY ERROR 48 00 INITIATOR DETECTED ERROR MESSAGE RECEIVED 49 00 INVALID MESSAGE ERROR 4A 00 COMMAND PHASE ERROR 4B 00 DATA PHASE ERROR 4E 00 OVERLAPPED COMMANDS ATTEMPTED 50 00 WRITE APPEND ERROR 52 00 CARTRIDGE FAULT 55...

Страница 169: ... Commands and page index PARA ATA COMMAND OP CODE PAGE 6 7 NOP 00h 6 18 6 2 DEVICE RESET 08h 6 4 6 9 READ SECTORS 20h 6 23 6 3 EXECUTE DEVICE DIAGNOSTICS 90h 6 5 6 8 PACKET A0h 6 19 6 5 IDENTIFY PACKET DEVICE A1h 6 8 6 12 STANDBY IMMEDIATE E0h 6 28 6 6 IDLE IMMEDIATE E1h 6 16 6 1 CHECK POWER MODE E5h 6 2 6 11 SLEEP E6h 6 26 6 4 IDENTIFY DEVICE ECh 6 7 6 10 SET FEATURES EFh 6 24 ...

Страница 170: ...11 APPENDIX C ATA Commands Op Code Order SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 11 2 This page intentionally left blank ...

Страница 171: ...1 READ BLOCK LIMITS 05h 7 51 7 10 READ 08h 7 49 7 24 WRITE 0Ah 7 78 7 26 WRITE FILEMARK 10h 7 81 7 21 SPACE 11h 7 72 7 2 INQUIRY 12h 7 3 7 23 VERIFY 13h 7 76 7 7 MODE SELECT 15h 7 30 7 18 RESERVE UNIT 16h 7 68 7 15 RELEASE UNIT 17h 7 58 7 1 ERASE 19h 7 2 7 8 MODE SENSE 1Ah 7 32 7 3 LOAD UNLOAD 1Bh 7 7 7 14 RECEIVE DIAGNOSTIC RESULTS 1Ch 7 56 7 20 SEND DIAGNOSTIC 1Dh 7 70 7 9 PREVENT ALLOW MEDIUM R...

Страница 172: ...12 APPENDIX D ATAPI Commands Op Code Order SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 12 2 This page intentionally left blank ...

Страница 173: ...gal value 83h 0Eh Reserved 83h 7Fh 83h 80h Partition count exceeded 83h 81h Reserved 83h 82h Reserved 83h 83h MIC is exist but is not used 83h 84h Reserved 83h 88h 83h 89h User Volume Note Size mismatch 83h 8Ah User Partition Note Size mismatch 83h 8Bh Reserved 83h 96h 83h 97h Current Partition is not the last partition 83h 98h Cannot append the new partition because the remaining capacity too sho...

Страница 174: ...13 APPENDIX E ASC ASCQ for AIT Sony Unique SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 13 2 This page intentionally left blank ...

Страница 175: ...r Accumulative Previous Group written Total Group written Previous Group read Total Group read Total Rewritten frame Total 3rd ECC count Load count Access count Previous rewritten frame Previous 3rd ECC count Last Max Absolute frame count Update Replace count for partition 0 Manufacturer Information Unique Serial Number in the world MIC physical characteristics Memory Management Information Eject ...

Страница 176: ...y contain the following combinations of user defined UVN and UPN structures where data X represents data structures that can be resized and data A represents data structures of fixed size UVN UPN for partition 0 UPN for partition 1 0 no data no data no data 1 data X no data no data 2 no data data X no data 3 data A data X no data 4 no data no data data X 5 data A no data data X 6 no data data A da...

Страница 177: ... partition tape 14 2 Functional Benefits The information maintained within MIC can be used to provide various tape sub system benefits to users In this section we discuss the following features available with MIC cartridges and SDX 470V drives fast load unload super high speed search and data integrity and media management 14 2 1 Fast Media Load Unload The System Log information stored in the MIC ...

Страница 178: ... the drive contains physical medium positioning information that allows the AIT drive to conduct super high speed bi directional searches using the 120 inches per second speed mode previously employed only for cartridge rewind Once the drive reaches the tape segment identified by the MIC information its speed drops to the standard search speed of 60 inch per second and then the drive locates the t...

Страница 179: ...dia is reformatted or damaged Since some of the information is maintained even when the Write Protect Tab is enabled the statistics are always accurate 14 2 3 1 Sample Application for MIC Most applications maintain the index vendor information at the bottom of user data on the tape or in a separate partition This results in the necessary periodic positioning operations which consume much operation...

Страница 180: ...14 Appendix F SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 14 6 This page intentionally left blank ...

Страница 181: ...1 Turbo Standard Format are longer than their counterparts defined by the DDS Standard Format The Sony SDX 470V supports native Tape Log Sense by way of Page 3Ch 15 3 Write Protection Tab on SDX2 cassette The Write Protection Tab prevents writes to MIC except for the Accumulative System Log Information The Accumulative System Log Information holds the history of the System Log from the beginning o...

Страница 182: ... checksum Additionally the drive always employs a verify sequence after writing data to MIC The contents of MIC are as follows 1 Manufacturer Information 2 System Log Information statistical information for tape errors etc 3 Map for Super Fast Search 4 User Partition Note User Volume Note If the contact type of MIC becomes unreadable under DDS Emulation Mode Sony SDX 470V treats the AIT E Turbo AI...

Страница 183: ...ports that the UVN size is 9 byte and the UVN must update with new data of the same size 9 bytes This is the data structure for User Partition Note Header Information 10 bytes of memory management information User Data The drive manages the User Volume Note Header and User Partition Note Headers These operations are transparent to the user When the drive reports the MIC free memory capacity MIC fr...

Страница 184: ... 1 Log Sense Page 3Dh Parameter Code 0003h Check MIC free memory capacity Log Select Page 3Eh Parameter Code 0003h Create User Partition Note for partition 0 Log Select Page 3Dh Parameter Code 0003h Check MIC free memory capacity Stop 15 8 1 1 Procedure for Writing User Data on MIC using LOG SELECT Command Please refer the Chapter 13 8 1 How to create User Notes Note Header length is differ from U...

Страница 185: ... MSB 5 Parameter Code LSB 6 DU DS TSD ET TMC Reserved LP 7 Reserved 8 MSB User Data Length 9 LSB 10 389 User Data Page Length 386 byte Parameter Code In case of UVN 0001h 15 8 2 User Data Length 380 byte User Data 380 byte 15 8 2 1 Procedure of Reading User Data on MIC using LOG SENSE Command Example Steps for reading user partition note added on partition 3 Input Parameter Code User Partition Not...

Страница 186: ...Code LSB 6 DU DS TSD ET TMC Reserved LP 7 Reserved 8 MSB User Data Length 9 n 10 10 n User Data 15 8 3 How to Update the User Volume Note The data update operation for MIC is accomplished by overwriting the current data with new data and this means that you have to rewrite the entire User Volume Note even if you want to change only a part of it Always check whether the UVN exists by interrogating ...

Страница 187: ...nt data with new data and this means that you have to rewrite the entire User Partition Note even if you want to change only a part of it Always check whether the UPN exists by interrogating the drive about the size of the UPN you will get 0 byte size if there is no UPN SDX 470V reports an error condition illegal parameter list length if the User Partition Note Data Size is ZERO Start Log Sense Pa...

Страница 188: ... 0014h Get the list of Partition No User Partition Note Yes Log Sense Page 3Dh Parameter Code 0003h Check MIC free memory capacity Log Select Page 3Eh Parameter Code 0001h Put User Volume Note data Stop 15 8 6 How to Expand or Shrink the User Partition Note If the User Partition Note is the last Note then you can overwrite the User Partition Note with one of a different length SDX 470V reports an ...

Страница 189: ...e drive supports up to 2 partitions The top physical partition number is always begins 0 and the bottom physical partition number is 1 The physical partition number is automatically translated to the logical partition number The top logical partition is 1 and bottom is 0 Consequently SDX 470V can be used with DDS applications without requiring configuration adjustments via special commands or hard...

Страница 190: ...rmation in MIC Normal Loading Sequence P0 Device Area ODA P1 ODA P2 ODA P3 ODA Load here Stand by here Loading Sequence with position problem P0 Device Area ODA P1 ODA P2 ODA P3 ODA Load here Stand by here If the Position Information on tape is different from the Position Information in MIC then SDX 470V will rewind the tape to PBOT clear the Position Information in MIC because the position inform...

Страница 191: ...the Partition Append operation to separate larger sessions or periodically after several smaller sessions This method should improve access times because the drive will be able to load unload at partition boundaries in closer porximity to desired target locations on tape In order to make the correct decision as to whether to use marks tor to append a partition the application should measure the cu...

Страница 192: ...16 Appendix H SONY AIT 1 Turbo drive SDX 470V series Ver 1 0 16 4 This page intentionally left blank ...

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