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6.4 Troubleshooting Procedures

C141-E198

6-13

6.4 Troubleshooting

Procedures

6.4.1

Outline of troubleshooting procedures

This section explains the troubleshooting procedures for disk drive errors.

Depending on the maintenance level, analyze the error to detect a possibly faulty part (disk drive, or
disk drive part).

Full-scale troubleshooting is usually required if the error cause is not known. If the error cause is
clear (e.g., abnormal noise in disk enclosure or burning of a PCA), troubleshooting is straightforward.

6.4.2

Troubleshooting with disk drive replacement in the field

At this level of maintenance, we recommend replacing the disk drive as a unit. If replacing the disk
drive rectifies the fault, return the removed disk drive to the factory, for test and repair. If the newly
installed disk drive does not rectify the fault another part of the system is faulty.

Table 6.2 summarizes system-level field troubleshooting. Troubleshooting must be done in the field,
to find faulty part (disk drive or system).

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Summary of Contents for MAS3367FC

Page 1: ...C141 E198 02EN MAS3735FC MAS3367FC DISK DRIVES PRODUCT MAINTENANCE MANUAL ...

Page 2: ...for incidental or consequential damages arising therefrom FUJITSU DISCLAIMS ALL WARRANTIES REGARDING THE INFORMATION CONTAINED HEREIN WHETHER EXPRESSED IMPLIED OR STATUTORY FUJITSU reserves the right to make changes to any products described herein without further notice and without obligation This product is designed and manufactured for use in standard applications such as office work personal d...

Page 3: ...tion 1 Added Deleted Altered Details 01 2003 07 29 02 2003 10 07 Table 2 1 2 2 and 3 2 are altered Table 2 3 is altered Capacity notation is changed Misdescription is corrected 1 Section s with asterisk refer to the previous edition when those were deleted ...

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Page 5: ... hardware and system configuration Chapter 2 Specifications This chapter gives detailed specifications of the MAS series disk drives and their installation environment Chapter 3 Data Format This chapter describes the data structure of the disk the address method and what to do about media defects Chapter 4 Installation Requirements This chapter describes the basic physical and electrical requireme...

Page 6: ...e user does not perform the procedure correctly This indicates a hazardous situation could result in serious personal injury if the user does not perform the procedure correctly This indicates a hazardous situation could result in minor or moderate personal injury if the user does not perform the procedure correctly This alert signal also indicates that damages to the product or other property may...

Page 7: ...properly The main alert messages in the text are also listed in the Important Alert Items CONVENTIONS USED IN THIS MANUAL The MAS3735FC and MAS3367FC disk drives are described as the intelligent disk drive IDD the drive or the device in this manual Decimal number is represented normally Hexadecimal number is represented as X 17B9 17B9h or 17B9H Binary number is represented as 010 Attention Please ...

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Page 9: ...re applied for their ECC The sector data is divided into 4 interleaving sectors and ECC is performed in each sector where the maximum number of errors up to 5 byte can be corrected Total maximum byte 5 byte 4 interleave 20 byte If the error of read sector keeps allowable error byte number correction is performed However if error byte exceeds its allowable number correction may not be performed pro...

Page 10: ...peration once the SCA connector breaks off contact and wait until the spindle motor stops about 30 seconds before dismount the drive When storing or transporting the drive put it in an antistatic bag Shown in Section 5 1 5 5 2 When dismounting the drive which is mounted on the system while power is not supplied to it Do not move the drive until the drive stops completely about 30 seconds if the sp...

Page 11: ...ected or unpredictable operation 3 Do not use a conductive cleaner to clean a disk drive assembly 6 6 Damage Never open the disk enclosure in the field Opening the disk enclosure in the field may cause an irreparable fault 6 6 Data loss Save data stored on the disk drive before requesting repair Fujitsu does not assume responsibility if data is destroyed during servicing or repair 6 7 Damage Never...

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Page 13: ...2 Specifications 3 Data Format 4 Installation Requirements 5 Installation 6 Diagnostics and Maintenance 7 Error Analysis Fibre Channel Interface Specifications 1 Command Processing 2 Data Buffer Management 3 Command Specification 4 Sense Data and error Recovery Procedure 5 Disk Medium Management ...

Page 14: ...T ATTATH FC PLDA ANSI X3 230 1994 FIBRE CHANNEL PHYSICAL AND SIGNALING INTERFACE FC PH ANSI X3 297 1996 FIBRE CHANNEL PHYSICAL AND SIGNALING INTERFACE 2 FC PH 2 ANSI X3 272 199X FIBRE CHANNEL ARBITRATED LOOP FC AL ANSI X3 269 199X FIBRE CHANNEL PLOTOCOL FOR SCSI SCSI FCP 1 ANSI American National Standards Institute In case of conflict between this manual and any referenced document this manual tak...

Page 15: ...ns 2 2 2 1 3 Environmental specifications 2 4 2 1 4 Error rate 2 5 2 1 5 Reliability 2 5 CHAPTER 3 Data Format 3 1 3 1 Data Space 3 1 3 1 1 Cylinder configuration 3 1 3 1 2 Alternate spare area 3 4 3 1 3 Track format 3 5 3 1 4 Sector format 3 7 3 1 5 Format capacity 3 9 3 2 Logical Data Block Addressing 3 9 3 3 Defect Management 3 11 3 3 1 Defect list 3 11 3 3 2 Alternate block allocation 3 11 CHA...

Page 16: ...s 5 3 5 3 Mounting Drives 5 4 5 3 1 Mounting procedures 5 4 5 4 Dismounting Drives 5 5 5 5 Checking Operation after Installation and Preparing the IDD for Use 5 6 5 5 1 Checking initial operation 5 6 5 5 2 Checking connection 5 7 5 5 3 Formatting 5 10 5 5 4 Setting parameters 5 12 5 6 Spare Disk Drive 5 16 CHAPTER 6 Diagnostics and Maintenance 6 1 6 1 Diagnostics 6 1 6 1 1 Self diagnostics 6 1 6 1...

Page 17: ...acement in the factory 6 16 6 4 5 Finding possibly faulty parts 6 16 CHAPTER 7 Error Analysis 7 1 7 1 Error Analysis Information Collection 7 1 7 1 1 Sense data 7 1 7 1 2 Sense key sense code and subsense code 7 1 7 2 Sense Data Analysis 7 3 7 2 1 Error information indicated with sense data 7 3 7 2 2 Sense data 3 0C 03 4 40 xx 4 44 xx and 4 C4 xx 7 4 7 2 3 Sense data 1 1x xx 3 1x xx and E 1D 00 Di...

Page 18: ...tion by REASSIGN BLOCKS command 3 13 Figure 4 1 External dimensions 4 2 Figure 4 2 IDD orientations 4 3 Figure 4 3 Mounting frame structure 4 4 Figure 4 4 Limitation of side mounting 4 4 Figure 4 5 Surface temperature measurement points 4 5 Figure 4 6 Service clearance area 4 6 Figure 4 7 Current waveform 12 VDC 4 7 Figure 4 8 AC noise filter recommended 4 8 Figure 4 9 Connector location 4 9 Figur...

Page 19: ... Table 3 1 Zone layout and track capacity 3 3 Table 3 2 Format capacity 3 9 Table 4 1 Surface temperature check point 4 5 Table 5 1 Motor start mode 5 3 Table 6 1 Self diagnostic functions 6 1 Table 6 2 System level field troubleshooting 6 14 Table 6 3 Disk drive troubleshooting 6 15 Table 7 1 Definition of sense data 7 3 Table A 1 FC SCA connector CN1 A 2 ...

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Page 21: ...th NCITS TR 19 Fibre Channel Private Loop SCSI Direct Attach FC PLDA which is the Fibre Channel PLDA standard covering items ranging from Fibre Channel physical layers to SCSI command protocols The high speed data transfer and long distance transmission capabilities of Fibre Channel technology and the powerful command set of the MAS disk driver facilitate creation of high performance and highly re...

Page 22: ...e use of such high speed data transfers available on the Fibre Channel loop 5 Continuous block processing The addressing method of data blocks is logical block address The initiator can access data by specifying block number in a logically continuous data space without concerning the physical structure of the track or cylinder boundaries The continuous processing up to 64K 1 blocks in a command ca...

Page 23: ...n confirm that the command is surely terminated with the GOOD STATUS 8 Command queuing feature The IDD can queue maximum 128 commands and optimizes the issuing order of queued commands by the reordering function This feature realizes the high speed processing 9 Reserve and release functions The IDD can be accessed exclusively in the multi host or multi initiator environment by using the reserve an...

Page 24: ...s sense data 1 13 xx 14 Defective block slipping A logical data block can be reallocated in a physical sequence by slipping the defective data block at formatting This results in high speed contiguous data block processing without a revolution delay due to defective data block 15 High speed positioning A rotary voice coil motor achieves fast positioning 16 Large capacity A large capacity can be ob...

Page 25: ... feature achieves easy maintainability of the IDD and function enhancing 1 2 Hardware Structure An outer view of the IDD is given in Figures 1 1 The IDD is composed of the disk head spindle motor mounted disk enclosure DE with actuator and air circulation filter as well as read write pre amp with the printed circuit assembly PCA of the controller Figure 1 1 FC model drives outer view 1 Disks The d...

Page 26: ...ontrolled and positioned via feedback of servo information in the data The heads are positioned on the CCS zone over the disks when the power is off or the spindle motor is stopped 5 Air circulation recirculation filter breather filter The disk enclosure DE configures a clean room to keep out particles and other contaminants The DE has a closed loop air recirculation system Using the movement of t...

Page 27: ...re Channel the ANSI standard defines Arbitrated Loop Fabric and Point to Point technologies The MAS series disk drives support the Arbitrated Loop technology Figure 1 3 gives an example of the FC AL system configuration Figure 1 3 Example of FC AL system configuration Any device connected to the Fibre Channel is called a node The nodes shown in Figure 1 3 represent the initiator and individual dis...

Page 28: ...lly A common solution preventing this problem from occurring is to add a port bypass circuit on the back plane of the system BC in Figure 1 3 indicates the port bypass circuit 2 Node addressing A specific device number called a SEL ID is assigned to each node on a Fibre Channel loop The combination of signal levels on the back plane is used to define the SEL ID of a disk drive The signal levels ar...

Page 29: ...nt recording capacities when shipped Table 2 1 lists the model name and order number The data format can be changed by reinitializing with the user s system Table 2 1 Model names and order numbers Model name Order number Interface type Capacity user area Number of disks Number of heads MAS3735FC CA06244 B400 SCA2 FC AL 73 49 GB 4 8 MAS3367FC CA06244 B200 SCA2 FC AL 36 77 GB 2 4 1GB 1 000 000 000 b...

Page 30: ...46 0 mm Weight max 0 80kg Power consumption 5 13 0 W 10 2 W Interface Cable length 30 m max Disk drive 93 11 to 118 22 MB s Data transfer rate FC AL 212 5 MB s max Logical data block length 512 to 528 byte Fixed length Command specification FC PLDA NCITS TR 19 FC PH ANSI X3 230 1994 FC PH 2 ANSI X3 297 1996 FC AL ANSI X3 272 199X SCSI FCP ANSI X3 269 199X Data buffer 32 MB FIFO ring buffer 7 Acost...

Page 31: ... Seek tim ms 4 The start time is the time from power on or start command to when the IDD is ready and the stop time is the time for disks to completely stop from power off or stop command 5 This value indicates at ready mode 6 1GB 1 000 000 000 bytes 7 1MB 1 048 576 bytes ...

Page 32: ...mum wet bulb temperature 29 C no condensation Operating 3 0 6 mm 5 to 20Hz 9 8 m s2 1G 20 to 300 Hz or less Non operating 4 3 1 mm 5 to 20Hz 49m s2 5G 20 to 300Hz or less Vibration 2 Transport packaged 3 1 mm 5 to 20Hz 49m s2 5G 20 to 300Hz or less Operating 637 4m s2 65G 2 ms Non operating 2451 7m s2 250G 2 ms Shock 2 Transport packaged 2451 7m s2 250G 2 ms Operating 300 m to 3 000 m Altitute abo...

Page 33: ...k medium equally 1 Unrecoverable error rate Errors which cannot be recovered within 63 retries and ECC correction should not exceed 1 per 1015 bits Data loss For MAS series Reed Solomon codes are applied for their ECC The sector data is divided into 4 interleaving sectors and ECC is performed in each sector where the maximum number of errors up to 5 byte can be corrected Total maximum byte 5 byte ...

Page 34: ...s or less 3 Service life The service life under suitable conditions and treatment is as follows The service life is depending on the environment temperature Therefore the user must design the system cabinet so that the average DE surface temperature is as possible as low DE surface temperature 40 C or less 5 years DE surface temperature 41 C to 45 C 4 5 years DE surface temperature 46 C to 50 C 4 ...

Page 35: ... security at power failure Integrity of the data on the disk is guaranteed against all forms of DC power failure except on blocks where a write operation is being performed The above does not applied to formatting disks or assigning alternate blocks ...

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Page 37: ...a block addressing method described in Section 3 2 The internal test space is used by Read write test of self diagnostics test but user can t use direct access The system space is accessed inside the IDD at power on or during the execution of a specific command but the user cannot directly access the system space 3 1 1 Cylinder configuration The IDD allocates cylinders to the user space Internal t...

Page 38: ...cylinder Spare Sectors per Cell 0 0 0 1 27 User Space for Cell 0 0 Spare Sectors per Cell 1 28 1 29 0 55 User Space for Cell 1 0 m 27 P1 m User Space for Cell P1 0 Spare Sectors per Cell P1 Alternate Cylinder User Space for Cell xx 1 User Space for Cell yy 17 User Space Primary Cylinder 0 n 1 1 1 17 n Figure 3 1 Cylinder configuration Apart from the above logical configuration the IDD intends to i...

Page 39: ...6 841 27 093 26 841 27 149 285 696 558 Note When the logical data block length is 512 bytes the sector track capacity indicates above amount 1 User space The user space is a storage area for user data The data format on the user space the length of data block and the number of data blocks can be specified with the MODE SELECT or MODE SELECT EXTENDED command The default value of cylinders in the us...

Page 40: ...ions 3 System space The system space is an area for exclusive use of the IDD itself and the following information are recorded Defect list P list and G list MODE SELECT parameter saved value Statistical information log data Controller control information The above information is duplicated in several different locations for safety Note The system space is also called SA space 3 1 2 Alternate spare...

Page 41: ...re 3 3 Alternate cylinder Note The number of alternate cylinders can not be changed 3 1 3 Track format 1 Physical sector allocation Figure 3 4 shows the allocation of the physical sectors in a track The length in bytes of each physical sector and the number of sectors per track vary depending on the logical data block length The unused area G4 exists at the end of the track in formats with most lo...

Page 42: ... in each track At the head switching location in a cylinder the first logical data block in track t 1 is allocated at the sector position which locates the track skew behind the sector position of the last logical data block sector in track t At the cylinder switching location like the head switching location the first logical data block in a cylinder is allocated at the sector position which loca...

Page 43: ...atically determines appropriate values for the track skew factor and the head skew factor according to the specified logical data block length The value can be read out by the MODE SENSE or MODE SENSE EXTENDED command after the track has been formatted 3 1 4 Sector format Each sector on the track consists of an ID field a data field and a gap field which separates them Figure 3 6 gives sector form...

Page 44: ... logical data block which is specified with a parameter in the MODE SELECT command Any multiple of 4 between 512 and 528 bytes can be specified as the length 5 BCRC It is a 4 byte error detection code Errors in the ID field Single burst errors with lengths of up to 32 bits for each logical block can be detected 6 ECC This is the 40 byte code that allows detection and correction of errors in the da...

Page 45: ...blocks The logical data block length the maximum logical block address and the number of the logical data blocks can be read out by a READ CAPACITY MODE SENSE or MODE SENSE EXTENDED command after initializing the disk medium Table 3 2 Format capacity Model Data heads Data block length User blocks Format capacity GB MAS3735FC 8 143 552 136 73 49 MAS3367FC 4 512 71 819 496 36 77 1GB 1 000 000 000 by...

Page 46: ... assigned in the same cell according to steps 1 to 4 subsequent logical data blocks are assigned in ascending order of cell number in the same way as in steps 1 to 4 Logical data blocks are assigned starting from track 0 in the next cell until the last cylinder immediately preceding the alternate cylinder n 1 shown in Figure 3 1 of the zone except alternate cylinders in cells in the user space Whe...

Page 47: ...nits by means of the defect management method inside the IDD The INIT can access all logical data blocks in the user space as long as there is no error Spare sectors to which alternate blocks are allocated can be provided in either spare sectors in a cell or alternate cylinders See Subsection 3 1 2 for details The INIT can specify the size and area for spare sectors by the MODE SELECT command at t...

Page 48: ...ctor treatment Figure 3 7 is examples of the alternate block allocation during the FORMAT UNIT command execution Figure 3 7 Alternate block allocation by FORMAT UNIT command During FORMAT UNIT command alternate block allocation is conducted in following cases 1 Unrecovered write offtrack condition during a media write 2 Uncorrectable Data Error during a media read certification 1 If above errors a...

Page 49: ...l data block specified by the initiator by means of alternate sector treatment If there are unused spare sectors in the same cell as the specified defective logical data block the alternate block is allocated to these unused spare sectors However the alternate block is allocated to unused spare sectors in the alternate cylinder when all spare sectors in the cell are used up Figure 3 8 is examples ...

Page 50: ...D command LBA log of uncorrectable error while the READ command is executed the AWRE processing is applied 3 AWRE processing The following processings are performed when the LBA matches the one in the uncorrectable error log a Primary media check Creates an uncorrectable error pattern invalid LBA pattern in the position of the error LBA repeats the primary media check up to three times If the erro...

Page 51: ...ready been re assigned Remark When a write protection is prohibited through the setting terminal the auto alternate block allocation processing specification is disabled Automatic alternate block allocation is made only once during the execution of one command If second defective block is detected the alternate block assignment processing for the first defective block is executed but the alternate...

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Page 53: ...ion Requirements This chapter describes the environmental mounting power supply and connection requirements 4 1 Mounting Requirements 4 1 1 External dimensions Figures 4 1 show the external dimensions of the IDD and the location of the holes for the IDD mounting screws Note Dimensions are in mm Mounting screw 6 32UNC ...

Page 54: ...Installation Requirements 4 2 C141 E198 The value marked with indicates the dimension between mounting holes on the bottom face Figure 4 1 External dimensions ...

Page 55: ...right mounting 2 Figure 4 2 IDD orientations 4 1 3 Notes on mounting 1 Mounting frame structure Special attention must be given to mount the IDD disk enclosure DE as follows a Use the frame with an embossed structure or the like Mount the IDD with making a gap of 2 5 mm or more between the IDD and the frame of the system b As shown in Figure 4 3 the inward projection of the screw from the IDD fram...

Page 56: ...Mounting frame structure 2 Limitation of side mounting Mount the IDD using the 4 screw holes at the both ends on the both sides as shown in Figure 4 4 Do not use the center hole by itself In case of using the center hole it must be used in combination with 2 holes on both ends Total 6 screws for 6 holes enclosed Use four holes No 1 4 to mount Holes for mounting screw Do not use center holes Holes ...

Page 57: ... PCA side especially with air circulation inside the cabinet Confirm the cooling effect by measuring temperature of specific ICs and the DE These measurement results should be within a criteria listed in Table 4 1 Keeping the DE surface temperature at 50 C or below at ambient temperature 25 C which is a condition for assuring an MTBF of 1 200 000 hours requires an air flow of 0 7 m s Table 4 1 Sur...

Page 58: ...Service clearance area 6 External magnetic field The drive should not be installed near the ferromagnetic body like a speaker to avoid the influence of the external magnetic field 7 Leak magnetic flux The IDD uses a high performance magnet to achieve a high speed seek Therefore a leak magnetic flux at surface of the IDD is large Mount the IDD so that the leak magnetic flux does not affect to near ...

Page 59: ...e The order of the power on off sequence of 5 VDC and 12 VDC supplied to the IDD does not matter 4 Sequential starting of spindle motors After power is turned on to the IDD a large amount of current flows in the 12 VDC line when the spindle motor rotation starts Therefore if more than one IDD is used the spindle motors should be started sequentially using one of the following procedures to prevent...

Page 60: ...ise filter should be installed at the AC input terminal on the IDD power supply unit The specification of this noise filter is as follows Attenuation 40 dB or more at 10 MHz Circuit construction T configuration as shown in Figure 4 8 is recommended Figure 4 8 AC noise filter recommended ...

Page 61: ... 4 9 Connector location 4 3 2 Interface connector The connector for the Fibre Channel Loop is an unshielded SCA 2 connector which has two 20 pin rows spaced 1 27 mm 0 05 inch apart Figure 4 10 shows the connector See Appendix A for signal assignments on the connector For details on the physical electrical requirements of the interface signals refer to Chapter 1 in Fibre Channel Interface Specifica...

Page 62: ...Installation Requirements 4 10 C141 E198 Figure 4 10 SCA2 type connector ...

Page 63: ... not give the drive shocks or vibrations exceeding the value defined in the standard because it may cause critical damage to the drive Especially be careful when unpacking b Do not leave the drive in a dirty or contaminated environment c Since static discharge may destroy the CMOS semiconductors in the drive note the following after unpacking Use an antistatic mat and body grounding when handling ...

Page 64: ...intenance work for replacing 4 Packaging a Store the drive in an antistatic vinyl pack b It is recommended to use the same cushions and packages as those at delivery If those at delivery cannot be used use a package with shock absorption so that the drive is free from direct shocks In this case fully protect the PCAs and interface connector so that they are not damaged c Indicate This Side Up and ...

Page 65: ...rt_1 Mated Start mode Connector pin CN1 10 CN1 09 Open Open The drive is not connected to the system The drive does not start the spindle motor Open GND The drive is connected to the system After recognizing the connection the drive starts the spindle motor upon receipt of a START STOP UNIT command GND Open The drive is connected to the system After recognizing the connection the drive starts the ...

Page 66: ...l operator panel cable before mounting the drive 2 Fix the drive in the system cabinet with four mounting screws as follows The drive has 10 mounting holes both sides 3 2 bottom 4 Fix the drive by using four mounting holes of both sides or the bottom See Figure 4 6 Use mounting screws whose lengths inside the drive mounting frame are 5 0 mm or less when the screws are tightened see Figure 4 3 When...

Page 67: ...n be stopped by a START STOP command It takes about 30 seconds for the spindle motor to stop completely Then dismount the drive using the drive mounting dismounting mechanism etc of the system If the drive is dismounted while the spindle motor is running special care is required to avoid excessive vibration or shock to the drive It is recommended to stop the operation once the SCA connector breaks...

Page 68: ...e IDD the LED goes off and then goes on again at the end of the processing requested by the initiator 2 Initial operation if the settings have been specified so that the START STOP UNIT command is used to start rotating the motor a When power is turned on the Active LED goes on momentarily and the IDD starts the initial self diagnosis b If the initial self diagnosis detects a problem the IDD sends...

Page 69: ...procedures 1 Checking procedure Issuing the commands and determining the end status depends on the start mode of the spindle motor and UNIT ATTENTION report mode specified with setting terminal Figure 5 1 shows the recommended checking procedure for the mode that the motor starts when power is turned on Figure 5 2 shows for the mode that the motor starts by the START STOP command In these recommen...

Page 70: ...Installation 5 8 C141 E198 Motor starts when power is turned on Figure 5 1 Checking the IDD connection A 60 ...

Page 71: ...5 5 Checking Operation after Installation and Preparing the IDD for Use C141 E198 5 9 Motor starts by START STOP command 1 Figure 5 2 Checking the IDD connection B Executing time about 60 seconds ...

Page 72: ...ber of cylinders in the user space Alternate spare area size This section outlines the formatting at installation Refer to Chapters 3 and 6 of Fibre Channel Interface Specifications for further details 1 MODE SELECT MODE SELECT EXTENDED command Specify the format attributes on the disk with the MODE SELECT or MODE SELECT EXTENDED command The parameters are as follows a Block descriptor Specify the...

Page 73: ...th verification With initialization the value 00 is written into all bytes of all logical data blocks Only the position information of defect blocks detected with verification is registered in the G list The specifications are as follows a Specifying CDB Specify 0 for the FmtData bit and the CmpLst bit on CDB 000 for the Defect List Format field and data pattern written into the data block at init...

Page 74: ...face Specifications for further details of the MODE SELECT and MODE SELECT EXTENDED commands and specifying the parameters 1 At factory shipment of the IDD the saving operation for the MODE SELECT parameter is not executed So if the user does not set parameters the IDD operates according to the default value of each parameter 2 The model select parameter is not saved for each Loop ID of but as the...

Page 75: ...e error Report of recovered error Suppression of ECC error correction 1 enabled 1 enabled 1 enabled 1 enabled 0 disabled 0 Correction is enabled Retry count at read operation Retry count at write operation Recovery time limit 63 63 30 sec b Verify error recovery parameters page code 7 Parameter Default value ERR PER DTE DCR Immediate correction of recoverable error Report of recovered error Stop o...

Page 76: ...mand of the disk Refer to Chapter 2 of Fibre Channel Interface Specifications for further details Parameter Default value Buffer full ratio 00 HEX Buffer empty ratio 00 HEX Notes 1 In a system without the disconnection function these parameters need not be specified 2 Determine the parameter values in consideration of the following performance factors of the system Time required for reconnection p...

Page 77: ...g during prefetching 1 enabled Number of blocks for which prefetch is suppressed X FFFF Minimum prefetch X 0000 Maximum prefetch X XXXX 1 cache segment Number of blocks with maximum prefetch restrictions X FFFF Number of segments X 08 Notes 1 When Read Ahead caching operations are disabled by the caching parameter these parameter settings have no meaning except write cache feature 2 Determine the ...

Page 78: ...on sequence of read write commands is optimized QErr Resume or abort remaining suspended commands after sense pending state 0 command is resumed DQue Disabling tagged command queuing 0 enabled 5 6 Spare Disk Drive See Subsection 2 1 1 Model name and order number to order a disk drive for replacement or as a spare ...

Page 79: ... The IDD has the following self diagnostic function This function checks the basic operations of the IDD Initial self diagnostics Online self diagnostics SEND DIAGNOSTIC command Table 6 1 lists the contents of the tests performed with the self diagnostics For a general check of the IDD including the operations of the host system and interface use a test program that runs on the host system see Sub...

Page 80: ... of the disk drive 1 Initial self diagnostics When power is turned on the IDD starts initial self diagnostics The initial self diagnostics checks the basic operations of the hardware functions If an error is detected in the initial self diagnostics the IDD sends the Fault LED Out signal to the interface connector In this status the IDD posts the CHECK CONDITION status to all I O operation requests...

Page 81: ...xecution of self diagnostics by setting 1 for the SelfTest bit on the CDB in the SEND DIAGNOSTIC command and specifies the test contents with the UnitOfl bit When the UnitOfl bit on the CDB is set to 0 the IDD executes the hardware function test only once When UnitOfl bit is set to 1 the IDD executes the hardware function test seek positioning test and data write read test for the Internal test sp...

Page 82: ...ared When this status is cleared the IDD executes the initial self diagnostics again see item 1 Refer to Chapter 3 of Fibre Channel Interface Specifications for further details of the command specifications Data loss When the SEND DIAGNOSTIC command terminates with the CHECK CONDITION status the INIT must collect the error information using the REQUEST SENSE command The RECEIVE DIAGNOSTIC RESULTS ...

Page 83: ...andom access and sequential access modes with the READ READ EXTENDED or VERIFY command 4 Write read test By using a data block in the internal test space the write read test can be executed with an arbitrary pattern for a disk drive in which user data is stored 6 2 Maintenance Information 6 2 1 Precautions Take the following precautions to prevent injury during maintenance and troubleshooting 1 To...

Page 84: ...e 2 Do not remove a PCA 3 Do not use a conductive cleaner to clean a disk drive assembly 6 2 2 Maintenance requirements 1 Preventive maintenance Preventive maintenance such as replacing air filters is not required Damage Never open the disk enclosure in the field Opening the disk enclosure in the field may cause an irreparable fault 2 Service life See 3 Service life in Section 2 1 5 ...

Page 85: ...nerally the following information must be included a IDD model part number P N revision number serial number S N and date of manufacturing b Error status Date when the error occurred System configuration Environmental conditions temperature humidity and voltage c Error history d Error contents Outline of inconvenience Issued commands and specified parameters Sense data Other error analysis informa...

Page 86: ... maintenance levels 1 Field maintenance disk drive replacement This replacement is done at the user s site Replacement uses standard tools Replacement is usually done by the user retail dealer distributor or OEM engineer 2 Factory maintenance parts replacement This replacement can only be done by Fujitsu Replacement includes maintenance training and OEM engineer support OEM engineers usually suppo...

Page 87: ...ng revision number at factory shipment When the disk drive is shipped from the factory the revision number is indicated by deleting numbers in the corresponding letter line up to the corresponding number with see Figure 6 2 2 Changing revision number in the field To change the revision number because parts are replaced or other modification is applied in the field the new level is indicated by enc...

Page 88: ...ation Figure 6 2 Indicating revision numbers 6 2 5 Tools and test equipment Disk drive troubleshooting and repair in the field require only standard hand tools No special tools or test equipment are required This manual does not describe the factory level tools and test equipment 6 2 6 Tests This disk drive can be tested in the following ways Initial seek operation check See Subsection 6 3 1 Opera...

Page 89: ...st results OK Continue operation Check host system Table 6 2 Host system normal Analyze system related error Replaced or repair disk drive Disk drive normal Execute diagnostic test using a host computer or test equipment Test results OK Test using voltage or temperature stress Test results OK Normal Analyze disk drive error Table 6 3 Yes Yes No No Yes No Yes No Figure 6 3 Test flowchart ...

Page 90: ...rror is detected by the error detection circuit of the disk drive an interrupt occurs The interrupt is posted to the MCU on the PCA The MCU stops the currently processed command and causes the CHECK CONDITION status to post the error to the INIT When receiving the CHECK CONDITION status the INIT issues a REQUEST SENSE command to collect detailed information about the error The INIT then issues a R...

Page 91: ...rror cause is clear e g abnormal noise in disk enclosure or burning of a PCA troubleshooting is straightforward 6 4 2 Troubleshooting with disk drive replacement in the field At this level of maintenance we recommend replacing the disk drive as a unit If replacing the disk drive rectifies the fault return the removed disk drive to the factory for test and repair If the newly installed disk drive d...

Page 92: ...ddress is set correctly System cables Check that all system cables are connected correctly System diagnostic test When possible execute the system level diagnostic routine as explained in the host computer manual This gives a detailed report of a possible fault Intermittent or nonfatal errors Check the AC voltage from the power supply Check the DC voltage level at the power connector for the disk ...

Page 93: ...e disk drive is used Table 6 3 Disk drive troubleshooting Item Recommended action Frequent or repeated seek errors Collect sense data and see Chapter 7 Replace the disk drive and check that the test method is correct If the error recurs it is likely that the disk drive is normal but the test method is incorrect Intermittent or nonfatal errors Replace the disk drive and check that the test method i...

Page 94: ...placement in the factory This manual does not cover troubleshooting at the factory level 6 4 5 Finding possibly faulty parts Finding possibly faulty parts in the field was explained in Subsection 6 4 2 This manual does not cover finding possibly faulty parts at the factory level ...

Page 95: ...on Collection 7 1 1 Sense data When IDD posts a CHECK CONDITION status or detects a fatal error in the loop the current command or queued command is cleared In such a case the IDD generates sense data about the command issuing INIT The INIT can read the sense data by issuing a REQUEST SENSE command Even if a transfer byte length that is shorter than the sense data length of the tested device is sp...

Page 96: ...8 additional sense data length 8 9 10 11 12 Sense code 13 Subsense code 14 X 00 15 SKSV 16 Sense key specific information 17 18 X 0 0 0 SCSI ID 19 CDB operation code 20 47 Figure 7 1 Format of extended sense data MSB Detail information LSB LSB Command specific information Information Additional information Basic information MSB ...

Page 97: ... xx xx Failed to update the defect list due to a disk medium write error etc An error occurred in power on self diagnosis A hardware error occurred inside IDD A drive error occurred 1 3 1x 1x xx xx A disk read error occurred A disk read error occurred E 1D 00 Data discrepancy found by VERIFY command byte check 5 2x xx A SCSI error such as an invalid operation code occurred 3D 00 The Reserve bit of...

Page 98: ...damage that was not recorded in the media defect list In this case assign an alternate block to the error detected block using a REASSIGN BLOCKS command For an explanation of the REASSIGN BLOCKS command refer to the Fibre Channel Interface Specifications If this error occurs in different blocks a PCA or DE is faulty For details of the above sense data refer to the Fibre Channel Interface Specifica...

Page 99: ...C141 E198 A 1 APPENDIX A Connector Signal Allocation A 1 Interface FC SCA Connector Signal Allocation This appendix describes the connector signal allocation ...

Page 100: ...GND 26 07 Active LED out PortB_in 27 08 Spindle sync PortB_in 28 09 Start_1 Mated GND 29 10 Start_2 Mated PortA_out 30 11 EN bypass port B PortA_out 31 12 SEL 6 DSK_WR GND 32 13 SEL 5 DSK_RD PortB out 33 14 SEL 4 ENCL_ACK PortB out 34 15 SEL 3 D 3 GND 35 16 Fault LED out SEL 2 D 2 36 17 DEV_CTRL_CODE2 SEL 1 D 1 37 18 DEV_CTRL_CODE1 SEL 0 D 0 38 19 5V DEV_CTRL_CODE0 39 20 5V 5V charge 40 Note 1 Sig...

Page 101: ... which initiates input and output operations on the SCSI bus In this manual initiator has been abbreviated to INIT SCSI Small Computer System Interface The standardized input output interface of the American National Standards Institute ANSI Standard No ANSI X3 131 1986 Sense Code This is a 1 byte code displayed in the sense data and is information which specifies the type of error that was detect...

Page 102: ...Glossary GL 2 C141 E198 Target TARG This is the FC device that executes the input output operations initiated by the initiator INIT In this manual target is abbreviated TARG ...

Page 103: ...Block Descriptor DC Direct Current DCR Disable Correction DCRT Disable CeRtificaTion DE Disk Enclosure DEF DEFective block DevOfl Device Offline DPO Disable Page Out DPRY Disable PRimarY DSP Disable Saving Parameters DTDC Data Transfer Disconnect Control DTE Disable Transfer on Error E ECC Error Correction Code EER Enable Early Recovery EVPD Enable Vital Product Data F FG Frame Ground FIFO First I...

Page 104: ... 4 Maximum Likelihood R RC Read Continuous RCD Read Cache Disable REQ Request RH Relative Humidity RMB ReMovaBle RST ReSeT RSV ReSerVed S S N Serial Number SBd Synchronized Byte data area SBi Synchronized Byte identifier area SCSI Small Computer System Interface SCT SeCTor SEL SELect SelfTest Self Test SG Signal Ground SP Save Page SPR SPaRe block SR Servo SSEC Soft SECtor STPF SToP Format SURF SU...

Page 105: ... checking initial operation 5 6 checking operation after installation and preparing IDD for use 5 6 checking procedure 5 7 checking IDD connection 5 8 5 9 command queuing feature 1 3 compactness 1 2 connection requirement 4 9 connector 4 9 continuous block processing 1 2 controller circuit 1 7 current waveform 4 7 cylinder configuration 3 1 D data field 3 8 data format 3 1 data security at power f...

Page 106: ...f bottom mounting 4 5 limitation of side mounting 4 4 logical data block addressing 3 9 loop 6 5 low noise and low vibration 1 5 low power consumption 1 5 maintenance level 6 8 maintenance requirement 6 6 microcode downloading 1 5 MODE SELECT MODE SELECT EXTENDED command 5 10 model name and order number 2 1 motor start mode 5 3 mounting 4 3 mounting drive 5 4 mounting frame structure 4 3 mounting ...

Page 107: ... stop of spindle motor 1 4 START STOP UNIT command 5 6 storage 5 2 surface temperature check point 4 5 surface temperature measurement point 4 5 sync mark 3 8 system configuration 1 7 system space 3 4 system level field troubleshooting 6 14 T take following action if problem occur 5 6 test 6 10 test flowchart 6 11 test program 6 4 tool and test equipment 6 10 track format 3 5 track skew and head s...

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Page 109: ...88 Rungis Cedex FRANCE TEL 33 1 41 80 38 80 FAX 33 1 41 80 38 66 FUJITSU ICL ESPAÑA S A Almagro 40 28010 Madrid SPAIN TEL 34 91 581 8000 FAX 34 91 581 8300 FUJITSU AUSTRALIA LIMITED 2 Julius Avenue Cnr Delhi Road North Ryde N S W 2113 AUSTRALIA TEL 61 2 9776 4555 FAX 61 2 9776 4556 FUJITSU HONG KONG LTD 10 F Lincoln House 979 King s Road Taikoo Place Island East Hong Kong TEL 852 2827 5780 FAX 852...

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Page 111: ...Reply requested Yes No Please evaluate overall quality of this manual by marking in the appropriate boxes Good Fair Poor Good Fair Poor Good Fair Poor Organization Use of examples Legibility Accuracy Index coverage Handiness Binding Clarity Cross referencing Others Figures tables General appearance Technical level Too high Appropriate Too low Overall rating of this publication Good Fair Poor FOR F...

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