Seagate ST373453LC - Cheetah 73.4 GB Hard Drive Product Manual
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Seagate ST373453LC - Cheetah 73.4 GB Hard Drive Product Manual

Seagate ST373453LC - Cheetah 73.4 GB Hard Drive Product Manual

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Cheetah 15K.3 SCSI Disc Drive:
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ST373453LW/LC
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ST336753LW/LC
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ST318453LW/LC
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Product Manual, Volume 1
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Summary of Contents for Seagate ST373453LC - Cheetah 73.4 GB Hard Drive

  • Page 1 ..........Cheetah 15K.3 SCSI Disc Drive: .
  • Page 3 ..........Cheetah 15K.3 SCSI Disc Drive: .
  • 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 publica- tion may be reproduced in any form without written permission of Seagate Technology LLC.
  • Page 5 Revision status summary sheet Revision Date Writer/Engineer Sheets Affected Rev. A 07/08/2002 K. Schweiss/B. Hohn All. Rev. B 07/09/2002 K. Schweiss/B. Hohn 1-81. Rev. C 07/16/2002 K. Schweiss/B. Hohn 27-28. Rev. D 08/16/2002 K. Schweiss/B. Hohn Rev. E 10/14/2002 K. Schweiss/B. Hohn Rev.

  • Page 7: Table Of Contents

    Cheetah 15K.3 SCSI Product Manual, Rev. G Contents Scope ................1 Applicable standards and reference documentation.
  • Page 8 Seagate Technology support services........
  • Page 9 Cheetah 15K.3 SCSI Product Manual, Rev. G List of Figures Figure 1. Cheetah 15K.3 SCSI family drive (ST373453LC shown)......1 Figure 2.

  • Page 11: Scope

    Cheetah 15K.3 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.3 SCSI Product Manual, Rev. G...

  • Page 13: Applicable Standards And Reference Documentation

    Mounting by bottom holes must meet the requirements of Section 8.4. Standards The Cheetah 15K.3 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: Reference Documents

    Package Test Specification Seagate P/N 30190-001 (under 100 lb.) 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.

  • Page 15: General Description

    (volume 1), which defines the product performance char- acteristics of the Cheetah 15K.3 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 16: Standard Features

    Cheetah 15K.3 SCSI Product Manual, Rev. G Standard features The Cheetah 15K.3 SCSI family has the following standard features: • Integrated Ultra320 SCSI interface. • Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD) • 16 bit I/O data bus •...

  • Page 17: Unformatted And Formatted Capacities

    Cheetah 15K.3 SCSI Product Manual, Rev. G Unformatted and formatted capacities Formatted capacity depends on the number of spare reallocation sectors reserved and the number of bytes per sector. The following table shows the standard OEM model capacities: Formatted data block size 512 bytes/sector [1] Unformatted ST373453...

  • Page 18: Performance Characteristics

    Cheetah 15K.3 SCSI Product Manual, Rev. G Performance characteristics Internal drive characteristics (transparent to user) ST373453 ST336753 ST318453 Drive capacity 73.4 36.7 18.4 GByte (formatted, rounded off values) Read/write heads Bytes/track 377,770 377,770 377,770 Bytes (average, rounded off values) Bytes/surface 12,046 12,046 12,046...

  • Page 19: Start/Stop Time

    Cheetah 15K.3 SCSI Product Manual, Rev. G Sector Sizes: Default 512 byte user data blocks Variable 512 to 528 bytes per sector in even number of bytes per sector. If n (number of bytes per sector) is odd, then n-1 will be used. Read/write consecutive sectors on a track Flaw reallocation performance impact (for flaws reallocated at format time using Negligible...

  • Page 20: Caching Write Data

    Cheetah 15K.3 SCSI Product Manual, Rev. G requested by the host with a Read command is retrieved from the buffer (if it is there), before any disc access is initiated. If cache operation is not enabled, the buffer (still segmented with required number of segments) is still used, but only as circular buffer segments during disc medium read operations (disregarding Prefetch operation for the moment).

  • Page 21: Prefetch Operation

    Cheetah 15K.3 SCSI Product Manual, Rev. G The Synchronize Cache command may be used to force the drive to write all cached write data to the medium. Upon completion of a Synchronize Cache command, all data received from previous write commands will have been written to the medium.
  • Page 22 Cheetah 15K.3 SCSI Product Manual, Rev. G...

  • Page 23: Reliability Specifications

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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...

  • Page 24: Reliability And Service

    Cheetah 15K.3 SCSI Product Manual, Rev. G error (15h) is reported with a Hardware error (4h) reported in the Sense Key. This is an unrecoverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculations. Refer to the SCSI Interface Product Manual, part number 75789509, for Request Sense information.

  • Page 25: Hot Plugging Cheetah 15K.3 Scsi Disc Drives

    Case 4 - Current I/O process allowed during insertion or removal, except on the device being changed Seagate Cheetah 15K.3 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 26: Thermal Monitor

    Cheetah 15K.3 SCSI Product Manual, Rev. G The process of measuring off-line attributes and saving data can be forced by the Rezero Unit command. Forc- ing S.M.A.R.T. will reset the timer so that the next scheduled interrupt will be two hours. The drive can be interrogated by the host to determine the time remaining before the next scheduled measure- ment and data logging process will occur.

  • Page 27: 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. 5.2.9.1 DST Failure Definition The drive will present a “diagnostic failed”...
  • Page 28 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 Manual, part number 75789509, for additional information about invoking DST.

  • Page 29: 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 30 Cheetah 15K.3 SCSI Product Manual, Rev. G...

  • Page 31: Physical/Electrical Specifications

    Cheetah 15K.3 SCSI Product Manual, Rev. G Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Cheetah 15K.3 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 32: Conducted Noise Immunity

    Cheetah 15K.3 SCSI Product Manual, Rev. G See Section 6.2.1 “Conducted Noise Immunity.” Specified voltage tolerance is inclusive of ripple, noise, and transient response. Operating condition is defined as random 8 block reads at 307 (for ST373453 models) I/Os per second (304 I/Os per second for ST336753 and ST318453 models).

  • Page 33: Figure 2. Typical St373453 Drive +12 V Current Profile

    Cheetah 15K.3 SCSI Product Manual, Rev. G Figure 2. Typical ST373453 drive +12 V current profile Figure 3. Typical ST373453 drive +5 V current profile...

  • Page 34: Figure 4. Typical St336753 Drive +12 V Current Profile

    Cheetah 15K.3 SCSI Product Manual, Rev. G Figure 4. Typical ST336753 drive +12 V current profile Figure 5. Typical ST336753 drive +5 V current profile...

  • Page 35: Figure 6. Typical St318453 Drive +12 V Current Profile

    Cheetah 15K.3 SCSI Product Manual, Rev. G Figure 6. Typical ST318453 drive +12 V current profile Figure 7. Typical ST318453 drive +5 V current profile...

  • Page 36: Power Dissipation

    Cheetah 15K.3 SCSI Product Manual, Rev. G Power dissipation ST373453 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 12.2 watts (41.6 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 12.5 watts (42.7 BTUs per hour).

  • Page 37: Figure 10. St336753 Dc Current And Power Vs. Iops (Se)

    Cheetah 15K.3 SCSI Product Manual, Rev. G ST336753 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 10.3 watts (35.1 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 10.5 watts (35.8 BTUs per hour).

  • Page 38: Figure 12. St318453 Dc Current And Power Vs. Iops (Se)

    Cheetah 15K.3 SCSI Product Manual, Rev. G ST318453 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 9.1 watts (31.1 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 9.3 watts (31.7 BTUs per hour).

  • Page 39: 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 Temperature Check Point Figure 14.

  • Page 40: 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...

  • Page 41: Figure 15. Recommended Mounting

    Cheetah 15K.3 SCSI Product Manual, Rev. G Figure 15. Recommended mounting...

  • Page 42: Air Cleanliness

    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 43: Mechanical Specifications

    Cheetah 15K.3 SCSI Product Manual, Rev. G Mechanical specifications The following nominal dimensions are exclusive of the decorative front panel accessory. However, dimensions of the front panel are shown in figure below. Refer to Figures 16 and 17 for detailed mounting configuration dimensions.

  • Page 44: Figure 17. Lc Mounting Configuration Dimensions

    Cheetah 15K.3 SCSI Product Manual, Rev. G Notes: 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 45: Defect And Error Management

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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 46: Scsi Systems Errors

    Cheetah 15K.3 SCSI Product Manual, Rev. G Table 4: Read and write retry count maximum recovery times [1] Read retry Maximum recovery time per Write retry Maximum recovery time per count [1] LBA (cumulative, msec) count LBA (cumulative, msec) 52.0 24.0 60.0 36.0...

  • Page 47: Installation

    J2, J5 and J6. Suggested part number for the jumpers used on J2 is Molex 52747-0211 (Seagate part number 77679052). A bag with jumpers for J2 is shipped with certain LW model configurations.

  • Page 48: Figure 18. J6 Jumper Header

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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...

  • Page 49: Figure 19. J5 Jumper Header (On Lw Models Only)

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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...

  • Page 50: Notes For Figures 18, 19, And 20

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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...

  • Page 51: Function Description

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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. Spindle starts immediately after power up.

  • Page 52: Drive Orientation

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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.

  • Page 53: 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 Tech- nology that the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame.
  • Page 54 Cheetah 15K.3 SCSI Product Manual, Rev. G...

  • Page 55: 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 56: Scsi Interface Commands Supported

    Cheetah 15K.3 SCSI Product Manual, Rev. G Notes. Extended messages (see the SCSI Interface Product Manual ). Supports all options except qas_req and iu_req. SCSI interface commands supported Table 6 following lists the SCSI interface commands that are supported by the drive. Table 6: Commands supported by Cheetah 15K.3 SCSI family drive Command...
  • Page 57 Cheetah 15K.3 SCSI Product Manual, Rev. G Table 6: Commands supported by Cheetah 15K.3 SCSI family drive (Continued) Command Supported by Command name code SCSI-2/3 Start-stop Cycle Counter page (0Eh) Temperature page (0Dh) Verify Error Counter page (05h) Write error counter page (02h) Mode Select (same pages as Mode Sense 1Ah) Y [2] Mode Select (10) (same pages as Mode Sense 1Ah)
  • Page 58 Cheetah 15K.3 SCSI Product Manual, Rev. G Table 6: Commands supported by Cheetah 15K.3 SCSI family drive (Continued) Command Supported by Command name code SCSI-2/3 Rezero Unit Search Data Equal Search Data High Search Data Low Seek Seek Extended Send Diagnostics Supported Diagnostics pages (00h) Translate page (40h) Set Limits...

  • Page 59: 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 60: Mode Sense Data

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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.
  • Page 61 Cheetah 15K.3 SCSI Product Manual, Rev. G The following tables list the values of the data bytes returned by the drive in response to the Mode Sense com- mand pages for SCSI Ultra160 implementation (see the SCSI Interface Product Manual ). Definitions: DEF = Default value.
  • Page 62 Cheetah 15K.3 SCSI Product Manual, Rev. G Table 9: ST336753 Mode sense data Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Mode 00 ae 00 10 00 00 00 08 04 45 dc cc 00 00 02 00 Sense Data...
  • Page 63 Cheetah 15K.3 SCSI Product Manual, Rev. G Table 10: ST318453 Mode sense data Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Mode 00 ae 00 10 00 00 00 08 02 22 ee 66 00 00 02 00 Sense Data Mode...

  • Page 64: Scsi Bus Conditions And Miscellaneous Features Supported

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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.

  • Page 65: 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 . 9.6.1 DC cable and connector ST373453LW and ST336753LW drives receive DC power through a 4-pin connector (see Figure 24 for pin assignment) mounted at the rear of the main PCBA.

  • Page 66: Figure 22. Lw Model Drive Physical Interface (68-Pin J1 Scsi I/O Connector)

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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 67: Scsi Interface Physical Description

    Cheetah 15K.3 SCSI Product Manual, Rev. G 9.6.2 SCSI interface physical description Cheetah 15K.3 drives support the physical interface requirements of the Ultra320 SCSI Parallel Interface-4 (SPI-4) standard and operate compatibly at the interface with devices that support earlier SCSI-2 and SCSI-3 standards.

  • Page 68: Scsi Interface Cable Requirements

    Cheetah 15K.3 SCSI Product Manual, Rev. G Table 14: Interface transfer rates supported Maximum transfer rate Interface type/ Fast-20 Fast-40 Fast-80 Fast-160 drive models Asynchronous Fast-5 Fast-10 (Ultra) (Ultra2) (Ultra160) (Ultra320) ST373453LW/LC ST336753LW/LC ST318453LW/LC ST373453LW/LC ST336753LW/LC ST318453LW/LC 9.6.3 SCSI interface cable requirements The characteristics of cables used to connect parallel interface drives are discussed in the ANSI standards ref- erenced in this section.
  • Page 69 Cheetah 15K.3 SCSI Product Manual, Rev. G Recommended mating flat cable connector part numbers are: Amp Model 786096-7 Female, 68-pin, panel mount Amp Model 786090-7 Female, 68-pin, cable mount Amp Model 749925-5 (50 mil conductor centers, 28 or 30 AWG wire) Use two, 34 conductor, 50 mil center flat cable with this connector.

  • Page 70: Figure 24. Scsi Daisy-Chain Interface Cabling For Lw Drives

    Cheetah 15K.3 SCSI Product Manual, Rev. G Recommended mating 80-position PCBA mount connectors: Straight-in connector Hot plug version (with ground guide-pin) Seagate P/N: 77678703 Amp US P/N: 2-557103-1 787311-1 with polarization 94-0680-02-1 Amp US P/N: 2-557103-2 787311-2 without polarization 94-0680-02-2...

  • Page 71: Figure 25. Nonshielded 68-Pin Scsi Device Connector Used On Lw Drives

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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 .315 .085 (2.54) (46.13) Pos. Position 1 x 45¡ chamfer (8.00) (2.16) .315 –...

  • Page 72: Figure 26. Nonshielded 80-Pin Scsi "Sca-2" Connector, Used On Lc Drives

    Cheetah 15K.3 SCSI Product Manual, Rev. G 7.00 (.276) 12.70 End View (.500) Grounding Pins 2.15–0.10 2 places 57.87 (2.278) —0.15 + .000 — .006 0.15 M Y M C L of Datum Y —Y— Front View Pin 1 62.15 –...
  • Page 73 Cheetah 15K.3 SCSI Product Manual, Rev. G Table 15: 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 Cable conductor Signal contact contact Signal number [2] name [1] number [3]...
  • Page 74 Cheetah 15K.3 SCSI Product Manual, Rev. G Table 16: 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 Cable conductor Signal contact contact Signal number [2] name [1] number [3] number [3]...
  • Page 75 Cheetah 15K.3 SCSI Product Manual, Rev. G Table 17: 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...
  • Page 76 Cheetah 15K.3 SCSI Product Manual, Rev. G Table 18: 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. Connector Signal contact Signal Contact name [1] number [3] number [3] name[1] 12 V CHARGE...

  • Page 77: Electrical Description

    Cheetah 15K.3 SCSI Product Manual, Rev. G Notes [ ] for Tables 15 through 18. 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.

  • Page 78: Figure 27. Typical Se-Lvd Alternative Transmitter Receiver Circuits

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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 = <...

  • Page 79: Terminator Requirements

    Cheetah 15K.3 SCSI Product Manual, Rev. G 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. The maximum SCSI bus length between the terminators for a SCSI LVD point-to-point system (one initiator and one target) is 25 meters (82 feet).

  • Page 80: Terminator Power

    Cheetah 15K.3 SCSI Product Manual, Rev. G Terminator power LW drives You can configure terminator power from the drive to the SCSI bus or have the host adaptor or other device supply terminator power to the external terminator. See Section 8.1 for illustrations that show how to place jumpers for this configuration.

  • Page 81: Disc Drive Scsi Timing

    Cheetah 15K.3 SCSI Product Manual, Rev. G 9.10 Disc drive SCSI timing Table 22: Disc drive SCSI timing Waveform Waveform Description symbol [1] table [1] Typical timing <1 µs Target Select Time (no Arbitration) 1.93 µs Target Select Time (with Arbitration) 4.5-1,2 3.77 µs Target Select to Command...

  • Page 82: Drive Activity Led

    Cheetah 15K.3 SCSI Product Manual, Rev. G Table 22: Disc drive SCSI timing (Continued) Waveform Waveform Description symbol [1] table [1] Typical timing 0.04 µs Data In Byte Transfer (parameter) 4.5-12 0.04 µs Data Out Byte Transfer (parameter) 4.5-13 0.12 µs Next Data In Byte Access (parameter) 4.5-12 0.12 µs...

  • Page 83: Seagate Technology Support Services

    Online Services Internet www.seagate.com for information about Seagate products and services. rss.seagate.com for information about Seagate backup tape drives and related services. Worldwide support is available 24 hours daily by e- mail for your disc or tape questions. Presales Support: Disc: www.seagate.com/support/email/email_presales.html or DiscPresales@Seagate.com...
  • Page 84 Seagate service center representative for warranty-related issues. Resellers or end users of drive products should contact their place of purchase or one of the Seagate warranty service cen- ters for assistance. Have your drive’s “ST” model number and serial number available.
  • Page 85 Cheetah 15K.3 SCSI Product Manual, Rev. G European Support Services For European presales, technical support, and warranty service, dial the toll-free number for your specific country. If your country is not listed here, dial our European call center at +31-20-316-7222 from 8:30 .
  • Page 86 Cheetah 15K.3 SCSI Product Manual, Rev. G...
  • Page 87 Cheetah 15K.3 SCSI Product Manual, Rev. G Index cabinet cooling 42 cable 55 Symbols cache 9 +5 and +12 volt supplies 22 cache buffer 6 cache miss 10 Numerics cache mode 9 cache operation 9 68-conductor connector 58 cache operation hit 11 68-pin connector 60 cache segment 10 80-conductor connector 59...
  • Page 88 Cheetah 15K.3 SCSI Product Manual, Rev. G DC power requirements 21 embedded servo 6 DC power source 59 EMC compliance 3 dedicated landing zone 5 EMI requirements 3 default 40 environment 42 default mode parameter 37 environmental control 32 default value 50 environmental interference 13 defect/error management 35 environmental limits 29...
  • Page 89 Cheetah 15K.3 SCSI Product Manual, Rev. G host I/O signal 37 medium error 14 host system 37 message protocol 55 host system malfunction 13 message protocol system 36 host/drive operational interface 13 messages hot plug 6 SCSI interface 45 humidity 29 miscellaneous features 54 mode page 01 50 mode page 08h 9...
  • Page 90 SCSI systems error 36 product data page 49 SCSI systems error consideration 35 programmable drive capacity 7 SCSI systems error management 36 Seagate support service 37 sector 10 radio interference regulations 3 sector interleave 8 read 10 sector size 7...
  • Page 91 Cheetah 15K.3 SCSI Product Manual, Rev. G SE-LVD alternative 68 tracks/inch 8 sense key 14 tracks/surface, total 8 sequential read operations 11 transfer period 55 service transmitter receiver circuits 68 life 13 typical access time 9 philosophy 14 tools 14 servo data 5 Ultra160 51 shielding 3...
  • Page 94 Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100148123, Rev. G, Printed in USA...

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