Seagate ST373405LW - Cheetah 73.4 GB Hard Drive Product Manual
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Seagate ST373405LW - Cheetah 73.4 GB Hard Drive Product Manual

Seagate ST373405LW - Cheetah 73.4 GB Hard Drive Product Manual

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Cheetah 73LP Family:
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ST373405LW/LWV/LC/LCV
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ST336605LC/LCV
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Product Manual, Volume 1
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Summary of Contents for Seagate ST373405LW - Cheetah 73.4 GB Hard Drive

  • Page 1 ..........Cheetah 73LP Family: .
  • Page 3 ..........Cheetah 73LP Family: .
  • 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 (Class C Release) 11/6/2000 L. Newman/J. Nowitzke 1/1, v thru viii, 1-76. Rev. B (Class A Release) 04/12/2001 L. Newman/J. Nowitzke All pages. Rev. C 05/17/2001 L. Newman/J. Nowitzke Page 45.

  • Page 7: Table Of Contents

    Cheetah 73LP Product Manual, Rev. C Contents Scope ................1 Applicable standards and reference documentation.
  • Page 8 Seagate Technology support services........
  • Page 9 Cheetah 73LP Product Manual, Rev. C List of Figures Figure 1. Cheetah 73LP family drive (ST373405LW shown) ....... . . 1 Figure 2.

  • Page 11: Scope

    Cheetah 73LP Product Manual, Rev. C Scope ® This manual describes Seagate Technology LLC, Cheetah 73LP™ disc drives. Cheetah 73LP drives support the small computer system interface (SCSI) as described in the ANSI SPI-3 (SCSI Parallel Interface-3) interface specification 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 73LP Product Manual, Rev. C...

  • Page 13: Applicable Standards And Reference Documentation

    Mounting by bottom holes must meet the requirements of Section 8.4. Standards The Cheetah 73LP family complies with Seagate standards as noted in the appropriate sections of this Manual and the Seagate SCSI Interface Product Manual, part number 75789509.

  • Page 14: Reference Documents

    T10/1302D SCSI Parallel Interface Version 3 (SPI-3) SFF-8451, Specification for SCA-2 Unshielded Connections 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...

  • Page 15: General Description

    (volume 1), which defines the product perfor- mance characteristics of the Cheetah 73LP family of drives, and the SCSI Interface Product Manual, part num- ber 75789509, which describes the general interface characteristics of this and other families of Seagate SCSI drives.

  • Page 16: Figure 2. Cheetah 73Lp Family Drive

    Cheetah 73LP Product Manual, Rev. C Figure 2. Cheetah 73LP family drive...

  • Page 17: Standard Features

    Cheetah 73LP Product Manual, Rev. C Standard features The Cheetah 73LP family has the following standard features: • Integrated Ultra/Ultra2/Ultra3 SCSI controller • Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD) • 16 bit I/O data bus •...

  • Page 18: Unformatted And Formatted Capacities

    Cheetah 73LP Product Manual, Rev. C 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 ST373405...

  • Page 19: Performance Characteristics

    Cheetah 73LP Product Manual, Rev. C Performance characteristics Internal drive characteristics (transparent to user) ST373405 ST336605 Drive capacity 73.4 36.7 GByte (formatted, rounded off values) Read/write heads Bytes/track 397,385 397,385 Bytes (average, rounded off values) Bytes/surface 12,100 12,100 Mbytes (unformatted, rounded off values) Tracks/surface (total) 29,549 29,549...

  • Page 20: Start/Stop Time

    Cheetah 73LP Product Manual, Rev. C SCSI interface data transfer rate (asynchronous): Maximum instantaneous one byte wide 5.0 Mbytes/sec [4] Maximum instantaneous two bytes wide 10.0 Mbytes/sec [4] Synchronous formatted transfer rate Ultra2 SCSI Ultra3 SCSI On narrow (8-bit) bus in LVD mode 5.0 to 40 Mbytes/sec 5.0 to 80 Mbytes/sec On wide (16-bit) bus in LVD mode...

  • Page 21: Cache Operation

    Cheetah 73LP Product Manual, Rev. C Cache operation In general, 3,600 kbytes (14,399 kbytes of the 16,384 kbytes in LWV and LCV models) of the 4,096 kbytes of physical buffer space in the drive can be used as storage space for cache operations. The buffer can be divided into logical segments (Mode Select Page 08h, byte 13) from which data is read and to which data is written.

  • Page 22: Prefetch Operation

    Cheetah 73LP Product Manual, Rev. C that was written there at the beginning of the operation. However, the drive does not overwrite data that has not yet been written to the medium. If write caching is enabled (WCE=1), then the drive may return GOOD status on a write command after the data has been transferred into the cache, but before the data has been written to the medium.

  • Page 23: Reliability Specifications

    Cheetah 73LP Product Manual, Rev. C 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

    Special equipment is required to repair the drive HDA. To achieve the above service life, repairs must be per- formed only at a properly equipped and staffed Seagate service and repair facility. Troubleshooting and repair of PCBs in the field is not recommended because of the extensive diagnostic equipment required for effective servicing.

  • Page 25: Hot Plugging Cheetah 73Lp Disc Drives

    Case 4 - Current I/O process allowed during insertion or removal, except on the device being changed Seagate Cheetah 73LP 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: Drive Self Test (Dst)

    Cheetah 73LP Product Manual, Rev. C You can measure off-line attributes and force the drive to save the data by using the Rezero Unit command. Forcing S.M.A.R.T. resets the timer so that the next scheduled interrupt is in two hours. You can interrogate the drive through the host to determine the time remaining before the next scheduled mea- surement and data logging process occurs.
  • Page 27 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, Vol-...
  • Page 28 Cheetah 73LP Product Manual, Rev. C 5.2.8.2.3 Short and extended tests DST has two testing options: 1. short 2. extended These testing options are described in the following two subsections. Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment.

  • 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 73LP Product Manual, Rev. C...

  • Page 31: Physical/Electrical Specifications

    Cheetah 73LP Product Manual, Rev. C Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Cheetah 73LP 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 73LP Product Manual, Rev. C 6.2.1 Conducted noise immunity Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak to peak measurements and apply at the drive power con- nector.

  • Page 33: Figure 4. Typical St336605 Drive +12 V Current Profile

    Cheetah 73LP Product Manual, Rev. C +5 Volt Current during spindle start – Typical Amperes Average value of waveform Envelope of waveform Seconds Figure 4. Typical ST336605 drive +12 V current profile +12 Volt Current during spindle start – Typical Amperes Envelope of waveform Average value of waveform Seconds...

  • Page 34: Figure 6. Typical St336605 Drive +5 V Current Profile

    Cheetah 73LP Product Manual, Rev. C +5 Volt Current during spindle start – Typical Amperes Envelope of waveform Average value of waveform Seconds Figure 6. Typical ST336605 drive +5 V current profile...

  • Page 35: Power Dissipation

    Cheetah 73LP Product Manual, Rev. C Power dissipation ST373405 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 9.9 watts (33.8 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 10.2 watts (34.8 BTUs per hour).

  • Page 36: Figure 9. St336605 Dc Current And Power Vs. Input/Output Operations Per Second (Se)

    Cheetah 73LP Product Manual, Rev. C ST336605 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 8.6 watts (29.4 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 8.9 watts (30.4 BTUs per hour).

  • Page 37: 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 38: Effective Altitude (Sea Level)

    Disc drives shipped as loose load (not palletized) general freight will be packaged to withstand drops from heights as defined in the table below. For additional details refer to Seagate specifications 30190-001 (under 100 lbs/45 kg) or 30191-001 (over 100 lbs/45 Kg).

  • Page 39: Figure 12. Recommended Mounting

    Cheetah 73LP Product Manual, Rev. C 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 40: 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 41: Mechanical Specifications

    Cheetah 73LP Product Manual, Rev. C 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 13 and 14 for detailed mounting configuration dimensions.

  • Page 42: Figure 14. St373405Lc Mounting Configuration Dimensions

    Cheetah 73LP Product Manual, Rev. C 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 43: Defect And Error Management

    Cheetah 73LP Product Manual, Rev. C 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 44: Scsi Systems Errors

    Cheetah 73LP Product Manual, Rev. C Table 3: 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) 77.7 35.8 89.7 53.7 304.9...

  • Page 45: 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 46: Figure 15. J6 Jumper Header

    Cheetah 73LP Product Manual, Rev. C Drive Front Jumper Plug (enlarged to show detail) Pin 1 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 47: Figure 16. J5 Jumper Header (On Lw Models Only)

    Cheetah 73LP Product Manual, Rev. C 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 48: Notes For Figures 15, 16, And 17

    Cheetah 73LP Product Manual, Rev. C Pin 1 Jumper Positions Force single-ended bus mode Delay Motor Start Enable Remote Motor Start Write Protect Parity Disable Reserved Additional notes on these (applies to “LW” model only; Term. Power to SCSI Bus functions in section 8.1.2.

  • Page 49: Function Description

    Cheetah 73LP Product Manual, Rev. C 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 50: Drive Orientation

    Cheetah 73LP Product Manual, Rev. C 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 51: 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 52 Cheetah 73LP Product Manual, Rev. C...

  • Page 53: Interface Requirements

    No attempt is made to describe all of the minute details of conditions and constraints that must be considered 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 Manual, part number 75789509.

  • Page 54: Scsi Interface Commands Supported

    Cheetah 73LP Product Manual, Rev. C SCSI interface commands supported Table 5 following lists the SCSI interface commands that are supported in the SCSI-2, and SCSI-3 modes of the drive. OEM standard drives are shipped set to operate in SCSI-2/SCSI-3 mode. Table 5: Commands supported by Cheetah 73LP family drive Command...
  • Page 55 Cheetah 73LP Product Manual, Rev. C Table 5: Commands supported by Cheetah 73LP family drive (Continued) Command Supported by Command name code SCSI-2/3 Write error counter page (02h) Mode select (same pages as Mode Sense 1Ah) Y [2] Mode select (10) (same pages as Mode Sense 1Ah) Mode sense Y [2] Caching parameters page (08h)
  • Page 56 Cheetah 73LP Product Manual, Rev. C Table 5: Commands supported by Cheetah 73LP family drive (Continued) Command Supported by Command name code SCSI-2/3 Search data equal Search data high Search data low Seek Seek extended Send diagnostics Supported diagnostics pages (00h) Translate page (40h) Set limits Start unit/stop unit (spindle ceases rotating)

  • Page 57: Inquiry Vital Product Data

    Cheetah 73LP Product Manual, Rev. C Table 6 lists the Standard Inquiry command data that the drive should return to the initiator per the format given in the SCSI Interface Product Manual, part number 75789509, Inquiry command section. Table 6: Cheetah 73LP family drive Standard Inquiry data Bytes Data (HEX)

  • Page 58: Mode Sense Data

    Cheetah 73LP Product Manual, Rev. C 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 59 Cheetah 73LP Product Manual, Rev. C 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-2/SCSI-3 implementation (see the SCSI Interface Product Manual, part number 75789509).
  • Page 60 Cheetah 73LP Product Manual, Rev. C Table 8: Mode sense data, ST336605 values (SCSI-2/3 implementation) 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 a6 00 10 00 00 00 08 04 45 dc cb 00 00 02 00...

  • Page 61: Scsi Bus Conditions And Miscellaneous Features Supported

    Cheetah 73LP Product Manual, Rev. C 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 62: Synchronous Data Transfer

    Figures 19 and 20 show the locations of the DC power connector, SCSI interface connector, drive select head- ers, and option select headers. 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, part number 75789509. 9.6.1...

  • Page 63: Figure 19. Lw Model Drive Physical Interface (68-Pin J1 Scsi I/O Connector)

    Cheetah 73LP Product Manual, Rev. C 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 19. LW model drive physical interface (68-pin J1 SCSI I/O connector) 80-pin SCSI I/O Connector...

  • Page 64: Scsi Interface Physical Description

    Cheetah 73LP Product Manual, Rev. C 9.6.2 SCSI interface physical description The drive models described by this product manual support the physical interface requirements of the SCSI-3 Parallel Interface-3 (SPI-3) standards as defined in American National Standard document T10/1302D, and operate compatibly at the interface with devices that support earlier SCSI-2 and SCSI-3 standards.

  • Page 65: Mating Connectors

    Cheetah 73LP Product Manual, Rev. C 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. If shielded and unshielded cables are mixed within the same SCSI bus, the effect of impedance mismatch must be carefully considered.

  • Page 66: Figure 21. Scsi Daisy Chain Interface Cabling For Lw Drives

    Cheetah 73LP Product Manual, Rev. C 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 Amp Japan P/N: 5-175475-9...

  • Page 67: Figure 22. Nonshielded 68 Pin Scsi Device Connector Used On Lw Drives

    Cheetah 73LP Product Manual, Rev. C 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 .010...

  • Page 68: Figure 23. Nonshielded 80 Pin Scsi "Sca-2" Connector, Used On Lc Drives

    Cheetah 73LP Product Manual, Rev. C 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 0.15 (2.447) ( .005)
  • Page 69 Cheetah 73LP Product Manual, Rev. C Table 12: 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] number [3]...
  • Page 70 Cheetah 73LP Product Manual, Rev. C Table 13: 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 71 Cheetah 73LP Product Manual, Rev. C Table 14: 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 72 Cheetah 73LP Product Manual, Rev. C Table 15: 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 73: Electrical Description

    Cheetah 73LP Product Manual, Rev. C Notes [ ] for Tables 12 through 15. 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 74: Figure 24. Lvd Output Signals

    Cheetah 73LP Product Manual, Rev. C Output characteristics Each signal (V ) driven by LVD interface drivers shall have the following output characteristics when measured at the disc drive connector: Steady state Low level output voltage* = –.95 V = < V = <...

  • Page 75: Terminator Requirements

    Cheetah 73LP Product Manual, Rev. C 9.7.1.1 Single-ended drivers/receivers The maximum total cable length allowed with drives using single-ended I/O driver and receiver circuits depends on several factors. Table 16 lists the maximum lengths allowed for different configurations of drive usage.

  • Page 76: Disc Drive Scsi Timing

    Cheetah 73LP Product Manual, Rev. C 9.10 Disc drive SCSI timing Table 17: Disc drive SCSI timing These values are not current Cheetah 73LP 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)

  • Page 77: Drive Activity Led

    Cheetah 73LP Product Manual, Rev. C Table 17: Disc drive SCSI timing (Continued) These values are not current Cheetah 73LP values, but are listed for information only. Waveform Waveform Description symbol [1] table [1] Typical timing Next CDB Byte Access (Byte 10 of 10) T23.10.10 4.5-4 0.12 s ±1 s...
  • Page 78 Cheetah 73LP Product Manual, Rev. C...

  • Page 79: Seagate Technology Support Services

    Seagate’s automated FAX delivery system. Using a touch-tone phone, you can obtain technical support information by return FAX 24 hours daily. This service is available worldwide. Presales Support Presales Support Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system.
  • Page 80 If you need help installing your drive, consult your dealer. Dealers are familiar with their unique system configu- rations and can help you with system conflicts and other technical issues. If you need additional help, you can talk to a Seagate technical support specialist. Before calling, note your system configuration and drive model number (ST####).
  • Page 81 Cheetah 73LP Product Manual, Rev. C European Support Services For European customer support, dial the toll-free number for your specific country for presales support, techni- cal support, SeaFAX and warranty service. If your country is not listed here, dial our European call center at +31-20-316-7222 from 8:30 .
  • Page 82 Cheetah 73LP Product Manual, Rev. C Warranty Service Call Center Toll-free Direct dial Asia/Pacific — +65-485-3595 +65-488-7503 Australia 1800-12-9277 — — Japan — +81-3-5462-2904 +81-3-5462-2979...
  • Page 83 Cheetah 73LP Product Manual, Rev. C Index buffer segment 11 buffer-full 11 buffer-full ratio 11 Symbols bulkhead connector 54 bus device reset message 48 +5 and +12 volt supplies 21 busy 51 bytes per sector 46 Numerics bytes/surface 9 bytes/track 9 68 conductor connector 55 68-pin connector 56 80 conductor connector 55...
  • Page 84 Cheetah 73LP Product Manual, Rev. C drive volume 35 dynamic spindle brake 7 daisy-chain 22 80 conductor 55 data correction 13 ECC 13 data transfer period 52 ECC correction capability 7 data transfer protocol 7 electrical characteristics 52 data transfer rate 9 electromagnetic compatibility 3 DC cable and connector 52 electromagnetic interference (EMI) 13...
  • Page 85 Cheetah 73LP Product Manual, Rev. C HDA 5 low voltage differential (LVD) drivers and receivers 7 head and disc assembly. See HDA LVD 64 heat removal 40 LVD interface receiver circuits 64 heat source 40 LVD output signals 64 high level format 35 high voltage differential 51 host 12 magnetoresistive heads 5...
  • Page 86 Cheetah 73LP Product Manual, Rev. C prefetch hit 12 prefetch mode 10 office environment 30 prefetch of contiguous blocks 12 operating 27 prefetch operation 10 operating option 35 prefetch segmented cache control 10 operating parameter 48 preventive maintenance 13 operator intervention 13 PRML read channel electronics 5 option jumper 35 product data page 47...
  • Page 87 SCSI-1 mode 44 synchronous transfer period 67 SCSI-2/SCSI-3 49 system chassis 41 SCSI-2/SCSI-3 mode 44 system recovery procedures 13 SE 63 Seagate support service 35 sector 11 task aborted 51 sector interleave 9 technical support services 69 sector size 8 temperature 10...
  • Page 88 Cheetah 73LP Product Manual, Rev. C warranty 7 wet bulb temperature 27 wide Ultra160 SCSI interface 5 WP jumper 39 wrap-around 11 write caching 11 write error 13 unrecoverable 13 write operation 11 write protect 39 write retry count 33 zero latency read 51 zoned bit recording (ZBR) 7...
  • Page 90 Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100109943, Rev. C, Printed in USA...

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