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Seagate ST3146854LC - Cheetah 146.8 GB Hard Drive User Manual

Cheetah 15k.4 scsi product manual
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Cheetah 15K.4 SCSI
ST3146854
ST373454
ST336754

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Summary of Contents for Seagate ST3146854LC - Cheetah 146.8 GB Hard Drive

  • Page 1 Users Guide Cheetah 15K.4 SCSI ST3146854 ST373454 ST336754...
  • Page 3 Users Guide Cheetah 15K.4 SCSI ST3146854 ST373454 ST336754...
  • Page 4 Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications. No part of this publication may be reproduced in any form without written permission of Seagate Technology LLC.
  • Page 5 Revision status summary sheet Revision Date Sheets Affected Rev. A 06/30/04 i-iii, 1-93. Initial release. Rev. B 07/14/04 Page 9. Rev. C 01/13/05 Pages 9, 12, 25, 26, 28, 29, 30, 31, 32, 33, and 38. Rev. D 05/04/05 Pages 8, 12, and 37.

  • Page 7: Table Of Contents

    Contents Scope ............... . 1 Applicable standards and reference documentation .
  • Page 8 Seagate Technology support services ........
  • Page 9 List of Figures Figure 1. Cheetah 15K.4 SCSI family drive (ST3146854LC shown) ......1 Figure 2.

  • Page 11: Scope

    Cheetah 15K.4 SCSI drives support the small computer system interface (SCSI) as described in the ANSI SCSI SPI-4 interface specifications to the extent described in this manual. The SCSI Interface Product Manual (part number 75789509) describes general SCSI interface characteristics of this and other families of Seagate drives.
  • Page 12 Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 13: Applicable Standards And Reference Documentation

    Mounting by bottom holes must meet the requirements of Section 8.4. Standards The Cheetah 15K.4 SCSI family complies with Seagate standards as noted in the appropriate sections of this Manual and the Seagate SCSI Interface Product Manual, part number 75789509, Volume 2.

  • Page 14: Electromagnetic Compliance

    • External modem • Mouse Although the test system with this Seagate model complies to the directives/standard(s), we cannot guarantee that all systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance and provide CE Marking and C-Tick Marking for their product.

  • Page 15: Reference Documents

    Package Test Specification Seagate P/N 30191-001 (over 100 lb.) Specification, Acoustic Test Requirements, and Procedures Seagate P/N 30553-001 In case of conflict between this document and any referenced document, this document takes precedence. Cheetah 15K.4 SCSI Product Manual, Rev. D...
  • Page 16 Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 17: General Description

    (volume 1), which defines the product performance char- acteristics of the Cheetah 15K.4 SCSI family of drives, and the SCSI Interface Product Manual (volume 2), part number 75789509, which describes the general interface characteristics of this and other families of Seagate SCSI drives.

  • Page 18: Standard Features

    Cheetah 15K.4 SCSI drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibility of destroying or degrading data by landing in the data zone. The drive automatically goes to the landing zone when power is removed. An automatic shipping lock prevents potential damage to the heads and discs that results from movement dur- ing shipping and handling.

  • Page 19: Performance

    272,662,935 10408197 2. Seagate drives also may be used at the maximum available capacity at a given sector size, but the excess capacity above the guaranteed level will vary between 10K and 15K families and from generation to gener- ation, depending on how each sector size actually formats out for zone frequencies and splits over servo bursts.

  • Page 20: Factory Installed Accessories

    change the capacity it is currently formatted to have. A number in the number of blocks field that is less than the maximum number of LBAs changes the total drive capacity to the value in the block descriptor number of blocks field.

  • Page 21: Performance Characteristics

    Performance characteristics Internal drive characteristics (transparent to user) ST3146854 ST373454 ST336754 Drive capacity 146.8 73.4 36.7 GByte (formatted, rounded off values) Read/write heads Bytes/track 471,916 471,916 471,916 Bytes (average, rounded off values) Bytes/surface 18,351 18,351 18,351 Mbytes (unformatted, rounded off val- ues) Tracks/surface (total) 50,864...

  • Page 22: Access Time

    4.2.1 Access time Not including controller overhead (msec) Read Write Average Typical Single Track Typical Full Stroke Typical Typical access times are measured under nominal conditions of temperature, volt- age, and horizontal orientation as measured on a representative sample of drives. Access to data = access time + latency time.

  • Page 23: Start/Stop Time

    Assumes no errors and no sector has been relocated. Assumes system ability to support the rates listed and no cable loss. Start/stop time After DC power at nominal voltage has been applied, the drive becomes ready within 20 seconds if the Motor Start Option is disabled (i.e., the motor starts as soon as the power has been applied).

  • Page 24: Caching Write Data

    requested LBs from the cache to the host in accordance with the disconnect/reconnect specification men- tioned above. 3. If the prefetch feature is enabled, refer to Section 4.5.2 for operation from this point. Case B - A Read command requests data, the first LB of which is not in any segment of the cache: 1.

  • Page 25: Optimizing Cache Performance For Desktop And Server Applications

    data already in some buffer segment(s), the host can limit the amount of prefetch data to optimize system per- formance. The max prefetch field (bytes 8 and 9) limits the amount of prefetch. The drive does not use the Prefetch Ceiling field (bytes 10 and 11). During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if the Discontinuity (DISC) bit is set to one in bit 4 of byte 2 of Mode parameters page 08h.
  • Page 26 Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 27: Reliability Specifications

    Reliability specifications The following reliability specifications assume correct host/drive operational interface, including all interface timings, power supply voltages, environmental requirements and drive mounting constraints (see Section 8.4). Seek Errors Less than 10 in 10 seeks Read Error Rates [1] Recovered Data Less than 10 errors in 10 bits transferred (OEM default settings) Unrecovered Data...

  • Page 28: Seek Errors

    5.1.3 Seek errors A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (Error code = 15h or 02h) will be reported with a Hardware error (04h) in the Sense Key.

  • Page 29: S.m.a.r.t

    Case 4 - Current I/O process allowed during insertion or removal, except on the device being changed Seagate Cheetah 15K.4 SCSI disc drives support all four hot plugging cases. Provision shall be made by the system such that a device being inserted makes power and ground connections prior to the connection of any device signal contact to the bus.

  • Page 30: Thermal Monitor

    Performance impact S.M.A.R.T. attribute data will be saved to the disc for the purpose of recreating the events that caused a predic- tive failure. The drive will measure and save parameters once every two hours subject to an idle period on the SCSI bus.

  • Page 31: Drive Self Test (Dst)

    If DST encounters an error during either of these tests, it reports a fault condition. If the drive fails the test, remove it from service and return it to Seagate for service. 5.2.6.1 DST Failure Definition The drive will present a “diagnostic failed”...
  • Page 32 To invoke DST, submit the Send Diagnostic command with the appropriate Function Code (001b for the short test or 010b for the extended test) in bytes 1, bits 5, 6, and 7. Refer to the Seagate SCSI Interface Product Manual, part number 75789509, for additional information about invoking DST.

  • Page 33: Product Warranty

    Seagate’s option and at no charge to customer, if returned by customer at cus- tomer’s expense to Seagate’s designated facility in accordance with Seagate’s warranty procedure. Seagate will pay for transporting the repair or replacement item to customer.
  • Page 34 Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 35: Physical/Electrical Specifications

    Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Cheetah 15K.4 SCSI drive. AC power requirements None. DC power requirements The voltage and current requirements for a single drive are shown in the following table. Values indicated apply at the drive power connector.
  • Page 36 Table 13: ST373454LC DC power requirements SE mode LVD mode Notes Voltage +5 V +12 V +5 V +12 V Regulation ±5% ±5% [2] ±5% ±5% [2] Average idle current DC [1][7] 0.56 0.56 0.55 0.56 Maximum starting current (peak DC) DC 0.78 1.88 0.77...

  • Page 37: Conducted Noise Immunity

    2. The +5 and +12 volt supplies shall employ separate ground returns. 3. Where power is provided to multiple drives from a common supply, careful consideration for individual drive power requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be available to each device.

  • Page 38: Figure 2. Typical St3146854 Drive +12V Lvd Current Profile

    Figure 2. Typical ST3146854 drive +12V LVD current profile Figure 3. Typical ST3146854 drive +5 V LVD current profile Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 39: Figure 4. Typical St373454 Drive +12V Lvd Current Profile

    Figure 4. Typical ST373454 drive +12V LVD current profile Figure 5. Typical ST373454 drive +5V LVD current profile Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 40: Figure 6. Typical St336754 Drive +12V Lvd Current Profile

    Figure 6. Typical ST336754 drive +12V LVD current profile Figure 7. Typical ST336754 drive +5V LVD current profile Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 41: Power Dissipation

    Power dissipation ST3146854 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 12.01 watts (40.98 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 12.01 watts (40.98 BTUs per hour). To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see Figures 8 and 9).

  • Page 42: Figure 10. St373454 Dc Current And Power Vs. Iops (Se)

    ST373454 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 9.52 watts (32.49 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 9.47 watts (32.31 BTUs per hour). To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see Figures 10 and 11).

  • Page 43: Figure 12. St336754 Dc Current And Power Vs. Iops (Se)

    ST336754 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 8.03 watts (27.40 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 8.08 watts (27.57 BTUs per hour). To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see Figures 12 and 13).

  • Page 44: Environmental Limits

    Non-operating –40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive. HDA Temp.

  • Page 45: Shock And Vibration

    36 in (914 mm) Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight shipment shall withstand a drop test from 48 inches (1,070 mm) against a concrete floor or equivalent.

  • Page 46: Figure 15. Recommended Mounting

    Figure 15. Recommended mounting Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 47: Air Cleanliness

    The sil- ver, copper, nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide, chloride, and nitrate contaminants. Sulfur is found to be the most damaging. In addition, electronic components should never be exposed to condensing water on the surface of the printed circuit board assembly (PCBA) or exposed to an ambient relative humidity greater than 95%.

  • Page 48: Acoustics

    There will not be any discrete tones more than 10 dB above the masking noise on typical drives when mea- sured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive.

  • Page 49: Figure 17. Lc Mounting Configuration Dimensions

    Notes: R REF Mounting holes are 6-32 UNC 2B, three -Z- -X- on each side and four on the bottom. Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full thread engagement of 0.12 in.
  • Page 50 Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 51: Defect And Error Management

    Defect and error management The drive, as delivered, complies with this specification. The read error rate and specified storage capacity are not dependent upon use of defect management routines by the host (initiator). Defect and error management in the SCSI system involves the drive internal defect/error management and SCSI systems error considerations (errors in communications between Initiator and the drive).
  • Page 52 used when data integrity is not a concern and speed is of utmost importance. If the Recovery Time Limit or retry count is reached during error recovery, the state of the RC bit is examined. If the RC bit is set, the drive will transfer the unrecovered data with no error indication and continue to execute the remaining command.

  • Page 53: Scsi Systems Errors

    Table 15: Read and write retry count maximum recovery times [1] Read retry Maximum recovery time per LBA Write retry Maximum recovery time per LBA count [1] (cumulative, msec) count (cumulative, msec) 51.9 23.9 59.9 35.9 203.5 55.9 235.4 67.8 271.3 119.7 283.3...

  • Page 54: Media Pre-Scan

    of the BGMS Log Page, it can avoid placing data in suspect locations on the media. Unrecovered error sites found during BGMS will be logged and recovered error sites will be logged or reallocated per ARRE/AWRE settings. With BGMS, the host system can consume less power and system overhead by only checking BGMS status/ results rather than tying up the bus and consuming power in the process of host-initiated media scanning activ- ity.

  • Page 55: Installation

    J2, J5-Auxiliary and J6. Suggested part number for the jumpers used on J2 is Molex 52747-0211 (Seagate part number 77679052). A bag with the two jumper plug types is shipped with the standard OEM drives.

  • Page 56: Figure 18. J6 Jumper Header

    Drive Front Jumper Plug (enlarged to show detail) Pin 1 [1] [5] Reserved A 2 A 1 A 0 SCSI ID = 0 (default) SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7...

  • Page 57: Figure 19. J5 Jumper Header (On Lw Models Only)

    Drive HDA (rear view, PCB facing downward) [1] [2] Pin 1 +5V Ground Pin 1 J1-DC Power 68 Pin SCSI ID = 0 (default) SCSI I/O Connector SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 For ID selection use...

  • Page 58: Notes For Figures 18, 19, And 20

    Pin 1 Jumper LW Models Positions Force single-ended bus mode Delay Motor Start Enable Remote Motor Start Write Protect Parity Disable No connection Term. Power to SCSI Bus Jumper Plug (enlarged to show detail) Drive Front Additional notes on these functions in section 8.1.2.

  • Page 59: Function Description

    8.1.2 Function description jumper installation Jumper function description Forces drive to use single-ended I/O drivers/receivers only. Drive can operate on the interface in low voltage differential mode or single-ended, depend- ing on the voltage state of the I/O “DIFFSNS” line. Default is SE jumper not installed. Spindle starts immediately after power up - Default setting.

  • Page 60: Drive Orientation

    Drive orientation The balanced rotary arm actuator design of the drive allows it to be mounted in any orientation. All drive perfor- mance characterization, however, has been done with the drive in horizontal (discs level) and vertical (drive on its side) orientations, and these are the two preferred mounting orientations. Cooling The host enclosure must provide heat removal from the drive.

  • Page 61: Drive Mounting

    (F) is applied to the fourth point. Note. Before mounting the drive in any kind of 3.5-inch to 5.25-inch adapter frame, verify with Seagate Technology that the drive can meet the shock and vibration specifications while mounted in such an adapter frame.
  • Page 62 Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 63: Interface Requirements

    SCSI. No attempt is made to describe all of the minute details of conditions and constraints that must be con- sidered by designers when designing a system in which this family of drives can properly operate. Seagate declares that the drives operate in accordance with the appropriate ANSI Standards referenced in various places herein, with exceptions as noted herein or in the Seagate SCSI Interface Product Manual .

  • Page 64: Scsi Interface Commands Supported

    Table 16: SCSI messages supported by Cheetah 15K.4 SCSI family drives Supported by Message name Message code Cheetah 15K.3 Quick Arbitration and Selection (QAS) Release recovery Restore pointers Save data pointer Synchronous data transfer req. Target transfer disable Terminate I/O process Wide data transfer request Notes.
  • Page 65 Table 17: Commands supported by Cheetah 15K.4 SCSI family drive (Continued) Command name Command code Supported by SCSI-2/3 PCR bit DU bit DS bit TSD bit ETC bit TMC bit LP bit Log Sense Application Client Log page (0Fh) Buffer Over-run/Under-run page (01h) Cache Statistics page (37h) Factory Log page (3Eh) Last n Deferred Errors or Asynchronous Events page (0Bh)
  • Page 66 Table 17: Commands supported by Cheetah 15K.4 SCSI family drive (Continued) Command name Command code Supported by SCSI-2/3 Mode Sense (10) (same pages as Mode Sense 1Ah) Prefetch Read Read Buffer (modes 0, 2, 3, Ah and Bh supported) Read Capacity Read Defect Data (10) Read Defect Data (12) Read Extended...
  • Page 67 Table 17: Commands supported by Cheetah 15K.4 SCSI family drive (Continued) Command name Command code Supported by SCSI-2/3 Test Unit Ready Verify BYTCHK bit Write Write and Verify DPO bit Write Buffer (modes 0, 2, supported) Firmware Download option (modes 5, 7, Ah and Bh supported) [3] Write Extended DPO bit FUA bit...

  • Page 68: Inquiry Vital Product Data

    03 means SCSI-3 (Ultra160) implemented. Note. Seagate has chosen to set this bit to 03, SCSI-3 (Ultra160) implemented, rather than 04, SCSI-4 (Ultra320) implemented, due to compatibility issues with some host bus adapters. This setting will not affect the Ultra320 functionality of the drive.

  • Page 69: Mode Sense Data

    9.3.2 Mode Sense data The Mode Sense command provides a means for the drive to report its operating parameters to the initiator. The drive maintains four sets of Mode parameters, Default values, Saved values, Current values and Change- able values. Default values are hard coded in the drive firmware that is stored in flash EPROM nonvolatile memory on the drive PCBA.
  • Page 70 Table 19: ST3146854 Mode sense data MODE SENSE (10 BYTE) HEADER DATA 00 ae 00 10 00 00 00 08 11 17 73 30 00 00 02 00 MODE SENSE PAGES DATA SAV 81 0a c0 0b ff 00 00 00 05 00 ff ff DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff SAV 82 0e 80 80 00 0a 00 00 00 00 00 00 00 00 00 00...
  • Page 71 Table 20: ST373454 Mode sense data MODE SENSE (10 BYTE) HEADER DATA 00 ae 00 10 00 00 00 08 08 8b b9 98 00 00 02 00 MODE SENSE PAGES DATA SAV 81 0a c0 0b ff 00 00 00 05 00 ff ff DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff SAV 82 0e 80 80 00 0a 00 00 00 00 00 00 00 00 00 00...
  • Page 72 Table 21: ST336754 Mode sense data MODE SENSE (10 BYTE) HEADER DATA 00 ae 00 10 00 00 00 08 04 45 dc cc 00 00 02 00 MODE SENSE PAGES DATA SAV 81 0a c0 0b ff 00 00 00 05 00 ff ff DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff SAV 82 0e 80 80 00 0a 00 00 00 00 00 00 00 00 00 00...

  • Page 73: Scsi Bus Conditions And Miscellaneous Features Supported

    SCSI bus conditions and miscellaneous features supported Asynchronous SCSI bus conditions supported by the drive are listed below. These conditions cause the SCSI device to perform certain actions and can alter the SCSI bus phase sequence. Other miscellaneous operating features supported are also listed here. Refer to the SCSI Interface Product Manual for details. Table 22: SCSI bus conditions and other miscellaneous features Condition/feature supported by:...

  • Page 74: Synchronous Data Transfer

    Details of the physical, electrical and logical characteristics are given in sections following, while the SCSI operational aspects of Seagate drive interfaces are given in the SCSI Interface Product Manual. Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 75: Dc Cable And Connector

    9.6.1 DC cable and connector LW model drives receive DC power through a 4-pin connector (see Figure 24 for pin assignment) mounted at the rear of the main PCBA. Recommended part numbers of the mating connector are listed below, but equiva- lent parts may be used.

  • Page 76: Figure 22. Lw Model Drive Physical Interface (68-Pin J1 Scsi I/O Connector)

    Power +12V +12V ret + 5V ret + 5V Pin 1 Pin 1A J1-DC Power J1-DC Power Pin 1P Pin 1A Pin 1 68 Pin SCSI I/O Connector Figure 22. LW model drive physical interface (68-pin J1 SCSI I/O connector) 80-pin SCSI I/O Connector...

  • Page 77: Scsi Interface Physical Description

    9.6.2 SCSI interface physical description Cheetah 15K.4 SCSI drives support the physical interface requirements of the Ultra320 SCSI Parallel Inter- face-4 (SPI-4), and operate compatibly at the interface with devices that support earlier SCSI-2 and SCSI-3 standards. It should be noted that this is only true if the systems engineering has been correctly done, and if earlier SCSI-2 and SCSI-3 devices respond in an acceptable manner (per applicable SCSI Standards) to reject newer Ultra320 protocol extensions that they don’t support.

  • Page 78: Mating Connectors

    • propagation delay (see T10/1365D Sections 6.3.6 and 6.3.7) • stub length (see T10/1365D Section 6.9) • device spacing (see T10/1365D Section 6.9) To minimize discontinuances and signal reflections, cables of different impedances should not be used in the same bus. Implementations may require trade-offs in shielding effectiveness, cable length, number of loads and spacing, transfer rates, and cost to achieve satisfactory system operation.
  • Page 79 9.6.4.2 Mating connectors for LC model drives The nonshielded connector shall be an 80-conductor connector consisting of two rows of 40 contacts with adja- cent contacts 50 (1.27 mm) mils apart (see Figure 26). I/O connection using a cable is not recommended. The length and size of the host equipment DC power carrying conductors from the DC power source to the host equipment 80-pin disc drive interface connector(s) should be strictly designed according to proper power trans- mission design concepts.

  • Page 80: Figure 24. Scsi Daisy-Chain Interface Cabling For Lw Drives

    Amp US P/N: 2-557103-2 787311-2 without polarization 94-0680-02-2 Amp Japan P/N: 5-175475-9 Right-angle to PCBA connectors Seagate P/N: 77678559 Amp US P/N: 2-557101-1 Amp Japan P/N: 5-175474-9 For additional information call Amp FAX service at 1-800-522-6752. “LW” Model Drive Terminator...

  • Page 81: Figure 25. Nonshielded 68-Pin Scsi Device Connector Used On Lw Drives

    3.650–.005 .346 .270 . 1 55 1.650 .3937 .600 .050 .0787 .200 .022 .020 .047 (15.24) .519 (13.18) (5.08) .100 Pos. 1.816 (2.54) .315 .085 (46.13) Pos. Position 1 x 45¡ chamfer (8.00) (2.16) .315 – .010 (8.00) .050 Pos. 35 +.001 .218 (1.27)

  • Page 82: Figure 26. Nonshielded 80-Pin Scsi Sca-2 Connector Used On Lc Drives

    7.00 (.276) 12.70 End View (.500) Grounding Pins 2.15 +/- 0.10 2 places 57.87 +/- 0.2 (2.278 +/- .008) 0.15 M Y M (.0059) C L of Datum Y –Y– Front View Pin 1 62.15 +/- 0.15 (2.447 +/- 0.006) 0.15 M Y M (.0059)
  • Page 83 Table 25: LW 68-conductor single-ended (SE) P cable signal/pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low. Connector Connector Signal contact Cable conductor contact Signal name [1] number [3] number [2] number [3] name [1] –DB12 –DB13...
  • Page 84 Table 26: LW 68-conductor LVD P cable signal/pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low. Connector Connector Signal contact Cable conductor contact Signal name [1] number [3] number [2] number [3] name [1] +DB12 –DB12...
  • Page 85 Table 27: LC 80-pin single-ended (SE) I/O connector pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low. Connector Signal contact Signal Contact name [1] number [3] number [3] name[1] 12 V CHARGE 12 V GND 12 V 12 V GND...
  • Page 86 Table 28: LC 80-pin single-ended (LVD) I/O connector pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low. Signal Connector contact Signal Contact name [1] number [3] number [3] name[1] 12 V CHARGE 12 V GND 12 V 12 V GND...

  • Page 87: Electrical Description

    Notes [ ] for Tables 25 through 28. See Section 9.6.4.1 for detailed electrical characteristics of these signals. The conductor number refers to the conductor position when using 0.025-inch (0.635 mm) centerline flat ribbon cable. Other cables types may be used to implement equivalent contact assignments. Connector contacts are on 0.050 inch (1.27 mm) centers.

  • Page 88: Figure 27. Typical Se-Lvd Alternative Transmitter Receiver Circuits

    LVD Input characteristics Each differential signal received by LVD interface receiver circuits shall have the following input characteristics when measured at the disc drive connector: Steady state Low level input differential voltage = 0.030 V = < V = < 3.6 V (signal negation/logic 0) Steady state High level input differential voltage = –3.6 V = <...
  • Page 89 Single-ended I/O cable pin assignments for LW drives are shown in Table 26. Single-ended I/O pin assignments for LC models are shown in Table 27. The LC model does not require an I/O cable. It is designed to connect directly to a back panel connector. 9.7.1.3 Cables for low voltage differential drivers/receivers The SPI-3 and SPI-4 specification for differential impedance for LVD cables is 122.5 + 12.5 ohms.

  • Page 90: Terminator Requirements

    Terminator requirements Caution: These drives do not have onboard internal terminators. The user, systems integrator or host equip- ment manufacturer must provide a terminator arrangement external to the drive when termination is required. For LW drives, terminator modules can be purchased that plug between the SCSI I/O cable and the drive I/O connector or on the end of a short I/O cable stub extending past the last cable connector.

  • Page 91: Disc Drive Scsi Timing

    9.10 Disc drive SCSI timing Table 32: Disc drive SCSI timing These values are not current Cheetah 15K.4 SCSI values, but are listed for information only. Waveform Waveform Description symbol [1] table [1] Typical timing Target Select Time (no Arbitration) <1 s Target Select Time (with Arbitration) 4.5-1,2...
  • Page 92 Table 32: Disc drive SCSI timing (Continued) These values are not current Cheetah 15K.4 SCSI values, but are listed for information only. Waveform Waveform Description symbol [1] table [1] Typical timing Next CDB Byte Access (Byte 2 of 10) T23.10.2 4.5-4 0.59 s Next CDB Byte Access (Byte 3 of 10)

  • Page 93: Drive Activity Led

    9.11 Drive activity LED The following table provides drive activity LED status. Table 33: Drive activity LED status Spindle status Command status LED status Spinning up with DC power applied On until spinup is complete Spun down Start Unit On while processing the command Powered down by removal of DC Off due to absence of power power...
  • Page 94 Cheetah 15K.4 SCSI Product Manual, Rev. D...

  • Page 95: Seagate Technology Support Services

    +1-405-324-4770. Seagate Service Centers Presales Support Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system, as well as drive availability and compatibility. Technical Support If you need help installing your drive, consult your system's documentation or contact the dealer's support ser- vices department for assistance specific to your system.
  • Page 96 Data Recovery Services Seagate offers data recovery services for all formats and all brands of storage media. Our Data Recovery Ser- vices labs are currently located in North America. To get a free quick quote or speak with a case management representative, call 1-800-475-0143.
  • Page 97 European support services For presales and technical support in Europe, dial the Seagate Service Center toll-free number for your spe- cific location. If your location is not listed here, dial our presales and technical support call center at +1-405- 324-4714 from 8:00 .
  • Page 98 Warranty service is available from 9:00 . to 6:00 . April through October, and 10:00 . to 7:00 November through March (Australian Eastern time) Monday through Friday. Seagate Service Centers Call center Toll-free Direct dial Australia 1800-14-7201 —...
  • Page 99 We are interested in your comments and suggestions regarding this publication. Please take a few minutes to participate in our survey at the following URL: http://survey.seagate.com/survey/techpubs.nsf Thank you for your time and comments. Cheetah 15K.4 SCSI Product Manual, Rev. D...
  • Page 100 Cheetah 15K.4 SCSI Product Manual, Rev. D...
  • Page 101 Index bytes per sector 57 bytes/surface 11 bytes/track 11 Symbols +5 and +12 volt supplies 27 cable 65 Numerics cache 13 cache buffer 9 68-conductor connector 68 cache miss 13 68-pin connector 70 cache mode 13 80 conductor connector 69 cache operation 13 80 conductor interface 69 cache operation hit 14...
  • Page 102 DC power 13 embedded servo 8 DC power carrying conductor 69 EMC compliance 4 DC power connector 64 EMI requirements 3 DC power requirements 25 environmental control 37 DC power source 69 environmental limits 34 dedicated landing zone 8 environmental requirements 17 default 48 EPROM 59 default mode parameter 45...
  • Page 103 mode page 01 59 mode page 08h 13 I/O connector 67 mode parameter 59 identified defect 41 page 08h 15 idle condition 31 mode select command 13 Input characteristics 78 mode select page 08h 14 inquiry command 58 mode sense command 59 inquiry vital product data 58 mode sense command page 08h 14 installation 45...
  • Page 104 17 SCSI systems error consideration 41 PRML read channel electronics 7 SCSI systems error management 43 product data page 58 Seagate support service 45 programmable drive capacity 9 sector 14 sector sizes 12 seek error 17 radio interference regulations 3...
  • Page 105 sequential read operations 15 Ultra160 mode 54 service Ultra160 SCSI interface 7 life 17 Ultra320 SCSI controller 8 shielding 3 unformatted 9 shipping 23 Unrecoverable Errors 17 shipping container 34 shock 35 and vibration 35 vibration 35 shock mount 51 vital product data 58 signal ground 51 volatile memory 59...
  • Page 108 Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100220456, Rev. D, Printed in USA...

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