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ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D

8.0

Media characteristics

This section provides information regarding the media used in Barracuda 4
disc drives.

8.1

Media description

The media used on the drive has a diameter of approximately 95 mm (3.7
inches). The aluminum substrate is coated with a thin-film magnetic material,
which has a proprietary protective layer for improved durability and environ-
mental protection.

Summary of Contents for ST15150DC

Page 1: ...Barracuda 4 Disc Drive ST15150N ND ST15150W WD WC DC Product Manual Volume 1...

Page 2: ......

Page 3: ...Barracuda 4 Disc Drive ST15150N ND ST15150W WD WC DC Product Manual Volume 1...

Page 4: ...ademarks of Seagate Technology Inc Barracuda is a trademark of Seagate Technology Inc Other product names are registered trademarks or trademarks of their owners Seagate reserves the right to change w...

Page 5: ...39 43 49 53 54 55 56 57 59 60 61 62 63 66 67 68 70 71 72 74 75 82 83 84 C 06 07 95 L Newman J Olson 11 12 29 33 34 35 36 41 42 54 59 60 61 62 65 70 71 D 02 07 96 L Newman J Olson 1 3 40 41 48 49 51 5...

Page 6: ......

Page 7: ...and execution time 13 5 3 General performance characteristics 14 5 4 Start stop time 15 5 5 Prefetch multi segmented cache control 15 5 6 Caching write data 17 5 7 Synchronized spindle operation 17 6...

Page 8: ...option headers 53 10 2 Synchronized spindles interface 55 10 2 1 Electrical description 55 10 3 Grounding 57 10 4 Drive termination 57 11 0 Interface requirements 59 11 1 General description 59 11 2 S...

Page 9: ...dimensions forWC DC drives 41 Figure 18 Recommended mounting 42 Figure 19 ST15150N ND drives option header locations 47 Figure 20 ST15150N ND drives option select jumper connectors 48 Figure 21 ST1515...

Page 10: ......

Page 11: ...described in the ANSI SCSI and SCSI 2 interface specifications to the extent described in this manual This manual defines the performance characteristics of the Barracuda 4 drives The SCSI 2 Interface...

Page 12: ...2 ST15150N ND W WD WC DC Product Manual Rev D...

Page 13: ...sanindependentlaboratorytoconfirmcompliancetotheabove directives Drives are tested in representative systems for typical applica tions The selected system represents the most popular characteristics f...

Page 14: ...4 ST15150N ND W WD WC DC Product Manual Rev D...

Page 15: ...es that re lievethehostfromknowingthephysicalcharacteristicsofthetargets logical block addressing is used The head and disc assembly HDA is environmentally sealed at the factory Air circulates within...

Page 16: ...ck prevents potential damage to the heads and discsthatresultsfrommovementduringshippingandhandling Theshipping lock disengages when power is applied to the drive and the head load process begins Barr...

Page 17: ...e or adjustments required Dedicated head landing zone Automatic shipping lock Automatic thermal compensation Embedded Grey Code track address to eliminate seek errors Self diagnostics performed at pow...

Page 18: ...me kit part number 75790701 adapts a 3 5 inch drive to fit in a 5 25 inch drive mounting space 4 3 1 Front panel The front panel normally available is black plastic You may order other colors Each pan...

Page 19: ...drives by enabling this feature with a jumper see Section 10 External terminators are required for differential ST15150ND WD DC drives These external terminators must be provided by the user systems...

Page 20: ...10 ST15150N ND W WD WC DC Product Manual Rev D...

Page 21: ...in process when a SCSI command is received the command is queued until the calibration for the specific head being calibrated completes When calibration completes for the specific head being calibrat...

Page 22: ...l drive characteristics 4 After the drive has cycled once through all the heads H at the N1 time interval single head TCAL scheduling switches to a N2 time interval where N2 T 2 H 5 When a single head...

Page 23: ...ommand Seek to TCAL cyl and select next head 5 2 1 Seek time Drive including controller overhead Drive level msec without disconnect msec read write read write Average typ 8 0 9 0 9 0 10 0 Single trac...

Page 24: ...ec Synchronous transfer rate wide ST15150W WD WC DC 0 5 to 20 0 Mbytes sec Read write consecutive sectors on a track Yes Flaw reallocation performance impact Negligible for flaws reallocated using the...

Page 25: ...proper values in the applicable bytes in page 08h see theSCSI 2InterfaceProductManual Defaultisprefetchand cache operation enabled Ofthe1 024Kbytesphysicalbufferspace approximately954Kbytescanbe used...

Page 26: ...o the initiator in accordance with the buffer full ratio specification given in Mode Select Disconnect Reconnect parameters page 02h see the SCSI 2 Interface Product Manual 2 The drive prefetches addi...

Page 27: ...ment is reached the data is written into the beginning of the same cache segment overwriting the data that was written there at the beginning of the operation However the drive does not overwrite data...

Page 28: ...eference signal to the host is required only if the host provides the reference signal If the host does not providethe reference signal do not connect the host Rotational position locking Note Mode Se...

Page 29: ...nsecodeissettoSpindlesSynchronized 5C01 orSpindles Not Synchronized 5C02 You may operate the drive may with a rotational skew when synchronized The rotational skew is applied in the retarded direction...

Page 30: ...20 ST15150N ND W WD WC DC Product Manual Rev D...

Page 31: ...0 Defect and error management 6 1 1 Environmental interference When evaluating systems operation under conditions of electromagnetic interference EMI the performance of the drive within the system is...

Page 32: ...verage local disc driveambient temperatureof 95 F 35 C or less Short term excursions up to the specification limits 122 F 50 C of the operating environment will not affect MTBF performance The followi...

Page 33: ...23 Above unit Under unit Note Air flows in the direction shown back to front or in reverse direction front to back Above unit Under unit Note Air flows in the direction shown or in reverse direction s...

Page 34: ...d for short time periods only Continuous operation at the elevated temperatures will reduce product reliability Air flow cooling ST15150N drives single ended MTBF 800k hours Card Component Reference c...

Page 35: ...LYHX Writer 2 64 LYHX CSAW 3 47 LYHX Pike 4 52 LYHX Driver 5 60 HDA housing Figure 13 The air flow pattern with which the temperature guidelines above were generated is shown in Figure 6 Local averag...

Page 36: ...48 MYHX Writer 2 64 MYHX CSAW 3 47 MYHX Pike 4 52 MYHX Driver 5 60 HDA housing Figure 13 The air flow pattern with which the temperature guidelines above were generated is shown in Figure 6 Local aver...

Page 37: ...2 NYHX Driver 5 60 HDA housing Figure 13 The air flow pattern with which the temperature guidelines above were generated is shown in Figure 6 Local average air velocities were 0 61 msec 120 lfpm and i...

Page 38: ...river 5 60 HDA housing Figure 13 The air flow pattern with which the temperature guidelines above were generated is shown in Figure 6 Local average air velocities were 0 61 msec 120 lfpm and inlet air...

Page 39: ...river 5 60 HDA housing Figure 13 The air flow pattern with which the temperature guidelines above were generated is shown in Figure 6 Local average air velocities were 0 61 msec 120 lfpm and inlet air...

Page 40: ...s voided if the HDA is opened 6 2 6 Installation The drive is designed manufactured and tested with a plug in and play installation philosophy This philosophy minimizes the requirements for highly tra...

Page 41: ...esses to the drive you are insertinng or removing haveceased forST15150WCandST15150DCdrives allI Oprocesses on the entire SCSI bus must be inactive All other devices on the same SCSI bus must have rec...

Page 42: ...32 ST15150N ND W WD WC DC Product Manual Rev D...

Page 43: ...18 peak AC 3 3 3 10 3 10 Delay motor start max DC 3 1 4 0 95 0 10 0 94 0 10 Peak operating current Typical DC X 1 10 0 92 0 86 1 13 0 86 Maximum DC3 1 0 95 0 95 1 19 0 95 Maximum peak AC3 1 08 1 8 1 9...

Page 44: ...D drives 11 No terminator power See 11 7 3 4 12 All power saving features enabled ASA II code only 13 Seeking is defined as a third stroke seek at OD A command is issued every 20 msec 14 Read track is...

Page 45: ...after performing internal diagnostics See Note 1 of Table 1 T3 The spindle is up to speed and the head arm restraint is unlocked T4 Heads move from the landing zone to the data area T5 The adaptive c...

Page 46: ...s to drive ambient temperatures of 122 F 50 C may occur without impact to specifiedMTBF Theenclosureforthedriveshouldbedesignedsuchthat the temperatures at the locations specified in Figures 7 8 9 10...

Page 47: ...rmal operation does not incur physical damage while subjected to intermittent shock not exceeding 10 Gs at a maximum duration of 11 msec half sinewave Shockoccurringatabnormallevelsmaydegradeoperating...

Page 48: ...c Non operating The limits of non operating vibration apply to all conditions of handling and transportation This includes both isolated drives and integrated drives The drive does not incur physical...

Page 49: ...R F E D K L A M 3 0 050 minimum clearance N C P B S H G J Notes 1 2 3 4 Inches Millimeters 5 740 4 000 1 620 615 4 000 250 1 750 3 750 2 370 5 420 5 565 5 965 195 360 1 725 4 100 190 0 015 145 80 101...

Page 50: ...B C D E F G H J K L M N P R S T U V max 0 010 0 010 0 034 0 020 0 005 0 005 0 010 0 010 0 010 0 020 0 010 0 035 0 015 0 015 0 010 0 010 0 010 0 020 max 25 25 86 50 13 13 25 25 25 50 25 90 38 38 25 25...

Page 51: ...P R S T U V max 0 010 0 010 0 034 0 020 0 005 0 005 0 010 0 010 0 010 0 020 0 010 0 035 0 015 0 015 0 010 0 010 0 010 0 020 max 25 25 86 50 13 13 25 25 25 50 25 90 38 38 25 25 25 50 Mounting holes two...

Page 52: ...two preferred mounting orientations To ensure properperformance rigidlymountthedrivetothehostsysteminaccordance with the requirements in this product manual Figure 18 Recommended mounting 7 6 2 Coolin...

Page 53: ...regarding the media used in Barracuda 4 disc drives 8 1 Media description The media used on the drive has a diameter of approximately 95 mm 3 7 inches Thealuminumsubstrateiscoatedwithathin filmmagnet...

Page 54: ...44 ST15150N ND W WD WC DC Product Manual Rev D...

Page 55: ...flyoutlinedinthissection References to other sections are provided when necessary 9 1 Drive internal defects errors Identified defects are recorded on the drive s defects list referred to as the prima...

Page 56: ...46 ST15150N ND W WD WC DC Product Manual Rev D...

Page 57: ...uit board connectors ST15150WC DC drives use J4 pin 6 for synchronizing spindles 10 1 Option headers The headers described in this section enable you to configure the drive to meet specific functional...

Page 58: ...Cable Connector Term power from drive Term power from SCSI bus Term power to SCSI bus Term power to SCSI bus and drive Power Connector SCSI Connector Pin 1 J4 J01 J4 J01 Pin 1 Pin 2 SSREF Pin 3 Pin 1...

Page 59: ...rrent limited through a 1K ohm 1 10W resistor 7 8 Write Protect option Jumper installed write protects the entire disc drive Default is no jumper 9 10 Delay Motor Start option Jumper installed waits f...

Page 60: ...50 ST15150N ND W WD WC DC Product Manual Rev D 10 1 2 ST15150W WD drives option headers SCSI I O Connector DC Power Connector J4 J01 Pin 1 J5 Figure 21 ST15150W WD drives option header locations...

Page 61: ...rm power from SCSI bus Term power to SCSI bus Term power to SCSI bus and drive Power Connector SCSI Connector Pin 1 Pin 1 J4 J01 J5 J01 Pin 1 Pin 2 SSREF Pin 3 Pin 1 J5 Pin 1 Pin 1 Pin 1 SCSI ID 13 SC...

Page 62: ...s in 33 seconds 5 6 Enable Motor Start option Jumper installed causes the target to wait for the Start Unit command from the SCSI host No jumper installed causes the unit to look at the Delay Motor St...

Page 63: ...3 10 1 3 ST15150WC DC drives option headers J4 J6 Figure 23 ST15150WC DC drives option header locations Figure 24 illustrates ST15150WC DC drives option select jumper connec tors Figure 24 ST15150WC D...

Page 64: ...ction J04 1 ID0 2 Fault 3 ID1 4 Vendor unique 5 ID2 6 Spindle sync 7 ID3 8 Activity LED 9 No connection 10 5V 11 Reserved 12 Reserved 13 Reserved 14 Reserved 15 Ground 16 Write protect 17 Reserved 18...

Page 65: ...onfigured as a master and is an input otherwise The reference index signal is connected from drive to drive in a daisy chain fashion as shown in Figure 4 10 2 1 1 Drivers and receivers Figure 25 shows...

Page 66: ...osition gold 2 mm header type Only pins 1 and 2 are used for connecting the reference index signal cable as shown in Figure 20 Pin 1 is SSREF and pin 2 is ground Figure 26 ST15150N ND drives configura...

Page 67: ...nonconductive electrically isolating method of mounting the drive in the host equipment however this may increase radiated emissions and is the system designer s responsibility 10 4 Drive termination...

Page 68: ...58 ST15150N ND W WD WC DC Product Manual Rev D...

Page 69: ...I 2 Abort 06h Y Y Y Abort tag 0Dh Y Y Y Bus device reset 0Ch Y Y Y Clear queue 0Eh N Y Y Command complete 00h Y Y Y Continue I O Process 12h N N Y Disconnect 04h Y Y Y Extended messages 01h Y Y Y Iden...

Page 70: ...Numbers Page N Y Y Implemented Operating Def Page N Y Y Jumper Settings Page N Y Y Unit Serial Number Page N Y Y Vital Product Data Page N Y Y Lock Unlock Cache 36h N N N Log Select 4Ch N Y Y Log Sens...

Page 71: ...arty Reserve Y Y Y Reserved 10 56h N Y Y Rezero Unit 01h Y Y Y Search Data Equal 31h N N N Search Data High 30h N N N Search Data Low 32h N N N Seek 0Bh Y Y Y Seek Extended 2Bh Y Y Y Send Diagnostics...

Page 72: ...20 20 20 20 20 Product ID 32 47 30 30 30 32 S S S S S S S S 00 00 00 00 48 63 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 64 79 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 95 00 00 00 00 00...

Page 73: ...17 18 19 20 21 22 23 Mode Sense 64 00 10 08 Data 00 7F FE DB 00 00 02 00 Mode page headers and parameter data bytes Mode Page DEF 01 81 06 04 1B 30 00 00 FF CHG 01 81 06 EF FF 00 00 00 00 DEF 02 82 0...

Page 74: ...1 00 0A 00 16 40 00 00 00 CHG 03 83 16 FF FF FF FF 00 00 FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 DEF 04 84 16 00 0E 80 15 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 20 00 00 CHG 04 84 16 00...

Page 75: ...00 00 FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 DEF 84 16 00 0E 80 15 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 20 00 00 CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 FF 00 00 00...

Page 76: ...llegiance condition N Y Y Deferred error handling N Y Y Differential interface circuits available Y Y Y Disconnect reconnect Y Y Y Parameter rounding Y Y Y controlled by round bit in Mode Select page...

Page 77: ...Transfer rate decimal M times 4 nanoseconds mega transfers second 25 100 10 0 31 125 8 0 37 150 6 66 50 200 5 0 62 250 4 0 75 300 3 33 87 350 2 86 100 400 2 5 11 5 2 REQ ACK offset The maximum REQ AC...

Page 78: ...interface components for the WC and DC drives Details of the physical electrical and logical characteristics are given in the followingsections TheSCSIoperationalaspectsofSeagatedriveinterfaces are p...

Page 79: ...ended I O circuits The maximum total cable length for use with drives having single ended I O driver and receiver circuits is 6 meters 19 7 feet when operating at line data transfer rates of 5 Mbytes...

Page 80: ...D drives A 50 conductor flat cable or 25 twisted pair cable is used A minimum conduc torsizeof28AWGshouldbeusedtominimizenoiseeffects Suggestednon shielded flat cable part numbers are Flat cable 35M 3...

Page 81: ...ential I O drives are shipped without terminators and have no provi sions for adding terminator sockets on the PCB You must provide external termination for these drives ST15150WC DC drives use the si...

Page 82: ...l differential driver and receiver circuits used by ST15150WD drives are shown in Figure 32 The differential drives have no provisions for terminator circuits Differential signals All differential int...

Page 83: ...both receivers and passive drivers This requirement is met with the input voltage varying between 7V DC and 12V DC with power on or off and with the hysteresis equaling 35 mV minimum The input charac...

Page 84: ...circuits contained in permanently mounted IC terminator packs on the main PCB All single initiator singletarget non daisy chain applicationsrequireyoutoterminate the initiator and drive Daisy chain co...

Page 85: ...33 Non shielded SCSI device connector 1 2 3 4 100 2 54 D 010 Typ 045 1 14 C 010 B Ref A 010 834 010 21 18 Min Typ 3 051 1 30 16 4 06 100 2 54 025 64 Sq Contact 50 Places C L 040 1 02 Ref 335 010 8 50...

Page 86: ...CK 38 DB 6 14 RST 40 DB 7 16 MSG 42 DB P 18 SEL 44 GROUND 20 C D 46 GROUND 22 REQ 48 GROUND 24 IO 50 TERMPWR 26 Notes 1 All odd pins except pin 25 are connected to ground Pin 25 is left open Caution P...

Page 87: ...B 3 9 10 DB 3 DB 4 11 12 DB 4 DB 5 13 14 DB 5 DB 6 15 16 DB 6 DB 7 17 18 DB 7 DB P 19 20 DB P DIFFSENS 21 22 GROUND GROUND 23 24 GROUND TERMPWR 25 26 TERMPWR GROUND 27 28 GROUND ATN 29 30 ATN GROUND 3...

Page 88: ...ition 1 Position 1 4 Position Power Header Commercial Mate N Lock 12 Position Auxiliary Shrouded Post Header AMPMODU 2mm 68 Position SCSI Receptacle AMPLIMITE 050 Series 403 10 24 033 84 Typ 010 25 Ty...

Page 89: ...GROUND 15 49 GROUND GROUND 16 50 GROUND TERMPWR 17 51 TERMPWR TERMPWR 18 52 TERMPWR RESERVED 19 53 RESERVED GROUND 20 54 GROUND GROUND 21 55 ATN GROUND 22 56 GROUND GROUND 23 57 BSY GROUND 24 58 ACK G...

Page 90: ...ENS 16 50 GROUND TERMPWR 17 51 TERMPWR TERMPWR 18 52 TERMPWR RESERVED 19 53 RESERVED ATN 20 54 ATN GROUND 21 55 GROUND BSY 22 56 BSY ACK 23 57 ACK RST 24 58 RST MSG 25 59 MSG SEL 26 60 SEL C D 27 61 C...

Page 91: ...0 15 M Y M 0 0 15 000 006 62 15 2 447 0 15 005 Housing X X Contact 0 3 012 M Y M 1 27 05 Typ C L of Datum Y C L of Datum Y 0 50 020 Pin 1 Pin 1 Side View Front View End View Contacts are recessed in...

Page 92: ...0 20 60 GROUND DB 7 21 61 GROUND DB 6 22 62 GROUND DB 5 23 63 GROUND DB 4 24 64 GROUND DB 3 25 65 GROUND DB 2 26 66 GROUND DB 1 27 67 GROUND DB 0 28 68 GROUND DB P1 29 69 GROUND DB 15 30 70 GROUND DB...

Page 93: ...I O REQ 12 52 REQ C D 13 53 C D SEL 14 54 SEL MSG 15 55 MSG RST 16 56 RST ACK 17 57 ACK BSY 18 58 BSY ATN 19 59 ATN DB P0 20 60 DB P0 DB 7 21 61 DB 7 DB 6 22 62 DB 6 DB 5 23 63 DB 5 DB 4 24 64 DB 4 DB...

Page 94: ...ect Identify MSG to data media T16 4 5 11 Command dependent Data to status T17 4 5 15 Command dependent Status to command complete MSG T18 4 5 5 8 15 1 0 s Command complete MSG to bus free T19 4 5 5 8...

Page 95: ...5 5 7 0 09 s 0 04 s 4 5 8 14 15 MSG OUT byte transfer T33 4 5 2 0 04 s STATUS byte transfer T34 4 5 5 8 0 04 s 4 5 15 Synchronous data transfer characteristics Request signal transfer period 3 variou...

Page 96: ...86 ST15150N ND W WD WC DC Product Manual Rev D...

Page 97: ...or Start option 49 52 enabling and disabling spindle synchronization mode 19 environmental interference 21 environmental limits effective altitude 37 shock and vibration 37 temperature 36 Index A AC p...

Page 98: ...rmination 9 internal data rate 11 J J01 jumper connector 49 J4 jumper connector 49 52 J5 jumper connector 52 jumper connectors explained 49 52 54 illustrated 48 51 K KYHX temperature measuring 29 L la...

Page 99: ...vers and receivers 7 terminating resistors 74 single ended drivers receivers 71 terminating 71 single ended I O cable requirements 69 P panel front kit 8 panel front kit 8 Parity Disable option 49 52...

Page 100: ...transfer rate wide 14 synchronous transter rate fast 14 T temperature case 24 25 26 27 28 29 measurement locations 28 30 operating and non operating 36 terminating drives 9 terminating resistors 74 t...

Page 101: ...ST15150N ND W WD WC DC Product Manual Rev D 91...

Page 102: ...Seagate Technology Inc 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 83328880 Rev D Printed in USA...

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