Seagate ST34501N Product Manual
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Seagate ST34501N Product Manual

Seagate ST34501N Product Manual

Cheetah 4lp family
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Cheetah 4LP Family:
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ST34501N/W/WC/WD/DC
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Product Manual, Volume 1
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Summary of Contents for Seagate ST34501N

  • Page 1 ..........ST34501N/W/WC/WD/DC .
  • Page 3 ..........ST34501N/W/WC/WD/DC .
  • Page 4 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technol- ogy, Inc. Cheetah, SeaFAX, SeaFONE, SeaNET, SeaTDD, and SeaBOARD are either trademarks or registered trademarks of Seagate Technology, Inc. or one of its subsidiaries. All other trademarks or registered trademarks are the property of their respective owners.
  • Page 5 Revision status summary sheet Revision Date Writer/Engineer Sheets Affected A Issue 04/07/97 D. Ashby/G. Olson 1/1, v thru vii, 1 thru 78 06/26/97 D. Ashby/G. Olson 9, 10, 14, 15, 18, 20, 22, 29, 30, 49, 52, 56, and 69. Notice.

  • Page 7: Table Of Contents

    Cheetah 4LP Product Manual, Rev. B Contents Scope ................1 Applicable standards and reference documentation.
  • Page 8 Seagate technical support services ........
  • Page 9 Cheetah 4LP Product Manual, Rev. B Figures Figure 1. Cheetah 9 family drive ............1 Figure 2.

  • Page 11: Scope

    Cheetah 4LP Product Manual, Rev. B Scope This manual describes the Seagate Technology®, Inc. Cheetah 4LP™ disc drives. Cheetah 4LP drives support the small cumputer system interface (SCSI) as described in the ANSI SCSI, SCSI-2, and SCSI-3 (Fast-20) interface specifications to the extent described in this manual. The SCSI Inter- face Product Manual (part number 77738479) describes general SCSI interface characteristics of this and other families of Seagate drives.

  • Page 13: Applicable Standards And Reference Documentation

    Mounting by bottom holes must meet the requirements of Section 8.4. Standards The Cheetah 4LP family complies with Seagate standards as noted in the appropriate sections of this manual and the Seagate SCSI Interface Product Manual (volume 2), part number 77738479.

  • Page 14: Reference Documents

    Fast-20 (also called “Ultra SCSI”) SFF-8046 Specification for 80-pin SCA connector for SCSI disk drives Package Test Specification Seagate P/N 30190-001 (under 100 lb.) Package Test Specification Seagate P/N 30191-001 (over 100 lb.) 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 4LP family of drives, and the SCSI Interface Product Manual (volume 2), P/N 77738479, which describes the general interface characteristics of this and other families of Seagate SCSI drives.

  • Page 16: Figure 2. Cheetah 9 Family Drive

    Cheetah 4LP Product Manual, Rev. B Cheetah 4LP Figure 2. family drive...

  • Page 17: Standard Features

    Cheetah 4LP Product Manual, Rev. B Standard features The Cheetah 4LP family has the following standard features: • Integrated SCSI controller • Single-ended or differential SCSI drivers and receivers • 8-bit and 16-bit I/O data bus models available • Asynchronous and synchronous data transfer protocol •...

  • Page 18: Unformatted And Formatted Capacities

    Cheetah 4LP Product Manual, Rev. B 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 [1] Data Block Size 512 Byte/Sector Unformatted 4.550 GB [2]...

  • Page 19: Performance Characteristics

    Cheetah 4LP Product Manual, Rev. B Performance characteristics Internal drive characteristics (transparent to user) Drive capacity 5,591 Gbyte (unformatted) (rounded-off values) Read/write heads Bytes/track 115,078 Bytes (average) (rounded-off values) Bytes/surface 751.0 Mbytes (unformatted) (rounded-off values) Tracks/surface (total) 6,526 Tracks (user accessible) Tracks/inch 6,932 Bits/inch (minimum)

  • Page 20: Start/Stop Time

    Cheetah 4LP Product Manual, Rev. B SCSI interface data transfer rate (asynchronous) [4]: Maximum instantaneous (16 bit wide) 10.0 Mbytes/sec [5] Maximum instantaneous (8 bit wide) 5.0 Mbytes/sec [5] Synchronous transfer rate for SCSI Fast-20 (Ultra SCSI): 8 bit data bus (N model) 2.5 to 20 Mbytes/sec 16 bit data bus (W/WC/WD/DC models) 5.0 to 40 Mbytes/sec...

  • Page 21: Cache Operation

    Cheetah 4LP Product Manual, Rev. B ual , P/N 77738479. Prefetch and cache operation are independent features from the standpoint that each is enabled and disabled independently via the Mode Select command. However, in actual operation the prefetch feature overlaps cache operation somewhat as is noted in Section 4.5.1 and 4.5.2. All default cache and prefetch Mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are given in Table 9.

  • Page 22: Prefetch Operation

    Cheetah 4LP Product Manual, Rev. B ing nothing to do with whether or not read and write caching is enabled or disabled. When a write command is issued, the cache is first checked to see if any logical blocks that are to be written are already stored in the cache from a previous read or write command.

  • Page 23: Reliability Specifications

    Cheetah 4LP Product Manual, Rev. B 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 ten in 10 seeks Read error rates [1] Unrecovered data...

  • Page 24: Reliability And Service

    Cheetah 4LP Product Manual, Rev. B Reliability and service You can enhance the reliability of Cheetah 4LP disc drives by ensuring that the drive receives adequate cool- ing. Section 6.0 provides temperature measurements and other information that may be used to enhance the service life of the drive.

  • Page 25: S.m.a.r.t

    Cheetah 4LP Product Manual, Rev. B 4. The SCSI device being removed or inserted shall employ transceivers that conform to the requirements for glitch-free power-on/off in the SCSI-3 standard. The SCSI device shall maintain the high-impedance state at the device connector contacts during a power cycle until the transceiver is enabled. 5.

  • Page 26: 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 27: Physical/Electrical Specifications

    The voltage and current requirements for a single drive are shown in the following table. Values indicated apply at the drive power connector. The single ended power requirements includes the internal disc drive SCSI I/O termination. The table shows current values in Amperes. Table 2: DC power requirements ST34501N/W/WC ST34501WD/DC Notes Single-ended Differential...

  • Page 28: Conducted Noise Immunity

    Cheetah 4LP Product Manual, Rev. B No terminator power. See Section 9.9. Seeking is defined as a third-stroke seek at OD. A command is issued every 20 msec. [10] Read track is defined as repeat reads of track 15 with a duty cycle of 86% for wide single-ended; 62% for wide differential.

  • Page 29: Power Dissipation

    Cheetah 4LP Product Manual, Rev. B Peak AC Nominal (average DC) curve Min AC T0 T1 Seconds Figure 3. Typical Cheetah 4LP family drive +12 V current profile Power dissipation For drives with single-ended interface circuits (“N,” “W,” and “WC” models), typical operating random read power dissipation is 14.9 watts (51 BTUs per hour) of DC power average at nominal voltages.

  • Page 30: Temperature

    PCB mounted integrated circuit case. b. 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 the drive.

  • Page 31: Figure 4. Locations Of Pcb Components Listed In Table 3

    Cheetah 4LP Product Manual, Rev. B “N” Model Drives “DC” Model Drives JAAJ FAAJ “WD” Model Drives “WC” Model Drives CAAJ EAAJ “W” Model Drives 1 . 0 " . 5 " HDA Temp. DAAJ Check Point Figure 4. Locations of PCB components listed in Table 3...

  • Page 32: Relative Humidity

    Cheetah 4LP Product Manual, Rev. B 6.4.2 Relative humidity The values below assume that no condensation on the drive occurs. a. Operating 5% to 95% non-condensing relative humidity with a maximum gradient of 10% per hour. b. Non-operating 5% to 95% non-condensing relative humidity. 6.4.3 Effective altitude (sea level) a.

  • Page 33: Figure 5. Recommended Mounting

    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 lb/45 kg) or 30191-001 (over 100 lb/45 kg).

  • Page 34: Air Cleanliness

    Cheetah 4LP Product Manual, Rev. B 6.4.4.2 Vibration a. Operating—normal The drive as installed for normal operation, complies with the complete specified performance while sub- jected to continuous vibration not exceeding 5-350 Hz @ 0.5 g Vibration may be applied in the X, Y, or Z axis. b.

  • Page 35: Mechanical Specifications

    Cheetah 4LP Product Manual, Rev. B 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 6, 7, and 8 for detailed mounting configuration dimensions.

  • Page 36: Figure 7. Mounting Configuration Dimensions For Models "W" And "Wd

    Cheetah 4LP Product Manual, Rev. B Notes: .050 in. (1.27mm) Mounting holes three on each side, 6-32 UNC. Max screw length into minimum clearance side of drive 0.15 in. (3.81 mm). Screw tightening torque 6.0 in-lb (.675 NM) max with minimum thread engagement of 0.12 in. (3.05 mm). Mounting holes four on bottom, 6-32 UNC.

  • Page 37: Figure 8. Mounting Configuration Dimensions For Models "Wc" And "Dc

    Cheetah 4LP Product Manual, Rev. B Notes: .050 in. (1.27mm) Mounting holes three on each side, 6-32 UNC. Max screw length into minimum clearance side of drive 0.15 in. (3.81 mm). Screw tightening torque 6.0 in-lb (.675 NM) max with minimum thread engagement of 0.12 in. (3.05 mm). Mounting holes four on bottom, 6-32 UNC.

  • Page 39: Defect And Error Management

    Cheetah 4LP Product Manual, Rev. B 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 40: Scsi Systems Errors

    Cheetah 4LP Product Manual, Rev. B Table 4: Read and write retry count maximum recovery times Read retry Maximum recovery time Write retry Maximum recovery time count [1] per LBA (cumulative, msec) count [1] per LBA (cumulative, msec) 1537 12 (default) 2397 1855 1714 16 (default) 2822...

  • Page 41: Installation

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

  • Page 42: Figure 9. Model "N" Option Select Jumper Connectors

    Cheetah 4LP Product Manual, Rev. B Pin 1 Pin 2 Enable Terminator (default) Delay Motor Start Enable Motor Start Jumper Plug Write Protect (enlarged to show detail) Disable SCSI Parity Pin 1 Reserved Term. Power from Drive (default) J6 [4] Pin 1 Term.

  • Page 43: Figure 10. Cheetah 9 Family Drive Id Select For Models "W" And "Wd

    Cheetah 4LP Product Manual, Rev. B Pin 1 Pin 2 “W/WD” Models Enable Terminator (default) Delay Motor Start Enable Motor Start Write Protect Jumper Plug (enlarged to Disable SCSI Parity show detail) Pin 1 Reserved “W” Models Term. Power from Drive (default) Pin 1 J6 [4] Term.

  • Page 44: Figure 11. Model St19101Wc/Dc Option Select Jumper Connectors

    Cheetah 4LP Product Manual, Rev. B Jumper Plug (enlarged to show detail) Pin 1 Pin 1 Pin 1 Pin 2 “WC/DC” Models SCSI ID = 0 (default) Delay Motor Start SCSI ID = 1 Enable Motor Start SCSI ID = 2 Write Protect SCSI ID = 3 Disable SCSI Parity...

  • Page 45: Notes For Figures 9, 10, And 11

    Cheetah 4LP Product Manual, Rev. B 8.1.1 Notes for Figures 9, 10, and 11. Notes explaining the functions of the various jumpers on jumper header connectors J2, J5, and J6 are given here and in Section 8.1.2. The term “default” means as standard OEM units are configured with a jumper on those positions when shipped from factory.

  • Page 46: Function Description

    Cheetah 4LP Product Manual, Rev. B 8.1.2 Function description J2 jumper installation Jumper function description (Applies only to “N” and “W” models) With the jumper installed, the On-board (non-removable) terminator circuits are enabled (connected to the I/O lines). Default is jumper installed. Terminator circuits not enabled (not connected to I/O lines).

  • Page 47: Drive Orientation

    Cheetah 4LP Product Manual, Rev. B 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 48: Drive Mounting

    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 49: Interface Requirements

    This section partially describes the interface requirements as implemented on the drives. The major portion of the interface requirements/implementation is described in the Seagate SCSI Interface Product Manual , P/N 77738479. This section has tables that give the Cheetah 4LP family drive's version of the SCSI implemen- tation described in the SCSI Interface Product Manual .

  • Page 50: Scsi Interface Commands Supported

    Cheetah 4LP Product Manual, Rev. B Not applicable to “N” models. SCSI interface commands supported Table 7 following lists the SCSI interface commands that are supported in the SCSI-2, and SCSI-3 modes of the drive. Cheetah 4LP family drives can be changed back and forth between SCSI-1 and SCSI-2/SCSI-3 modes using the Change Definition command.
  • Page 51 Cheetah 4LP Product Manual, Rev. B Table 7: Commands supported by Cheetah 4LP family drive (Continued) Command Supported by Command name code SCSI-2/3 Mode select (same pages as Mode Sense command) Y [2] Mode select (10) Mode sense Y [2] Caching parameters page (08h) Control mode page (0Ah) Disconnect/reconnect (02h)
  • Page 52 Cheetah 4LP Product Manual, Rev. B Table 7: Commands supported by Cheetah 4LP family drive (Continued) Command Supported by Command name code SCSI-2/3 Search data low Seek Seek extended Send diagnostics Supported diagnostics pages (00h) Translate page (40h) Set limits Start unit/stop unit (spindle ceases rotating) (1Ch) Synchronize cache Test unit ready...

  • Page 53: Inquiry Vital Product Data

    S# Eight ASCII digits representing the eight digits of the product serial number. Bytes 18 through 23 reflect model of drive. Shown here are hex values for Model ST34501N. For models “W,” “WD,” “WC,” and “DC,” byte 23 is 57 (W), since these are wide data bus drives and that is the only fact the host needs to discover from byte 23.
  • Page 54 Cheetah 4LP Product Manual, Rev. B Current values are volatile values currently being used by the drive to control its operation. A Mode Select command can be used to change these values (only those that are changeable). Originally, they are installed from Saved or Default values after a power on reset, hard reset, or Bus Device Reset message.
  • Page 55 Cheetah 4LP Product Manual, Rev. B 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 , P/N 77738479). Definitions: = Saved value.
  • Page 56 Cheetah 4LP Product Manual, Rev. B Table 9: Mode sense data, ST34501 default values (SCSI-2/3 implementation) (Continued) Bytes 00 01 02 03 04 05 06 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 1C SAV 9C 0A 00 04 00 00 00 00 00 00 01 1C DEF 9C 0A 00 04 00 00 00...

  • Page 57: Scsi Bus Conditions And Miscellaneous Features Supported

    Cheetah 4LP Product Manual, Rev. B 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 58: 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, P/N 77738479. This section describes the connectors, cables, signals, terminators and bus timing of the DC and SCSI I/O interface.

  • Page 59: Figure 13. Physical Interface For "N" Model Drives

    Cheetah 4LP Product Manual, Rev. B Power +12V +12V ret + 5V ret + 5V 3P 2P DC Power Connector Pin 1 Pin 1 SCSI I/O Connector Figure 13. Physical interface for “N” model drives...

  • Page 60: Figure 14. Model "W" And "Wd" Drive Physical Interface (68-Pin J1 Scsi I/O Connector)

    Cheetah 4LP Product Manual, Rev. B 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 14. Model “W” and “WD” drive physical interface (68-pin J1 SCSI I/O connector) 80 Pin SCSI I/O Connector...

  • Page 61: Scsi Interface Physical Description

    Cheetah 4LP Product Manual, Rev. B 9.6.2 SCSI interface physical description The drives may be daisy-chained together or with other compatible SCSI devices. Both ends of the cable must be terminated. The “N,” “W,” and “WC” model drives implement single-ended drivers and receivers. All signals are common between all SCSI devices.

  • Page 62: Mating Connectors

    Cheetah 4LP Product Manual, Rev. B 9.6.3.1 Single-ended I/O circuits (“N” and “W” models) The maximum total cable length allowed with drives having single-ended I/O driver and receiver circuits depends on several factors. Table 12 lists the maximum lengths allowed for different configurations of drive usage.
  • Page 63 Cheetah 4LP Product Manual, Rev. B 9.6.4.1 Mating connectors for “N” models The nonshielded cable connector should be a 50-conductor connector consisting of two rows of 25 female con- tacts with adjacent contacts 100 mils apart. Recommended mating flat cable connector part numbers are: Closed end 3M-3425-7000 W/O Strain Relief, No Center Key...

  • Page 64: Figure 16. Scsi Daisy-Chain Interface Cabling

    Cheetah 4LP Product Manual, Rev. B Recommended mating 80-position PCB 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 65: Figure 17. Nonshielded 50-Pin Scsi Device Connector Used On "N" Models

    Cheetah 4LP Product Manual, Rev. B Insert mating cable connector here .370 ± .010 (9.398) Ref. (15.24) (10.67) Typ. (5.08) .065 x 45° Chamfer Typ. (1.65) Pin 1 .037 Ref. Typ. Typ. (.94) (6.60) .335 ± .010 (8.50) .100 (2.54) .025 +.001 Sq.

  • Page 66: Figure 18. Nonshielded 68-Pin Scsi Device Connector Used On "W" And "Wd" Models

    Cheetah 4LP Product Manual, Rev. B 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 67: Figure 19. Nonshielded 80-Pin Scsi "Sca-2" Connector Used On "Wc" And "Dc" Models

    Cheetah 4LP Product Manual, Rev. B Side View Section X–X .276 (7.00) .060 (1.52) .500 End View (12.70) .106 (2.70) Grounding Pins .052 .085±0.004 (1.32) 2 places .038±.004 (.97±0.10) 2.278 +.000 (57.87) –.006 –0.15 0.006 M Y M C L of Datum Y –Y–...
  • Page 68 Cheetah 4LP Product Manual, Rev. B Table 13a. Model “N,” single-ended I/O, 50-conductor, signal/contact assignments Connector Cable Connector Signal contact conductor contact Signal name [1] number [12] number [11] number [12] name [1] –DB0 –DB1 –DB2 –DB3 –DB4 –DB5 –DB6 –DB7 –DBP NC [10]...
  • Page 69 Cheetah 4LP Product Manual, Rev. B Table 13b. “W” models single-ended I/O cable 68-conductor signal/contact assignments Connector Cable Connector Signal contact conductor contact Signal name [1] number [3] number [2] number [3] name [1] –DB12 –DB13 –DB14 –DB15 –DBP1 –DB0 –DB1 –DB2 –DB3...
  • Page 70 Cheetah 4LP Product Manual, Rev. B Table 13c. “WD” models differential cable 68-conductor signal/pin assignments (nonshielded connector)[13] Note. The minus sign next to the signal indicates asserted state is the low voltage of the two levels used for logic signals. Connector Cable Connector...
  • Page 71 Cheetah 4LP Product Manual, Rev. B Table 13d. “WC” models single ended I/O, 80-conductor cable signal/contact assignments Connector Signal contact Signal Contact name [1] number [3] number [3] name[1] 12 V CHARGE 12 V GND 12 V 12 V GND 12 V 12 V GND 12 V...
  • Page 72 Cheetah 4LP Product Manual, Rev. B [13] Table 13e. “DC” differential models, 80-pin I/O connector pin assignments (nonshielded connector) Connector Signal contact Signal Contact name [1] number [3] number [3] name[1] 12 V CHARGE 12 V GND 12 V 12 V GND 12 V 12 V GND 12 V...
  • Page 73 Cheetah 4LP Product Manual, Rev. B Notes [ ] for Tables 13a through 13e. See Section 9.7.1 or 9.6.4.2 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 74: Electrical Description

    Cheetah 4LP Product Manual, Rev. B Electrical description “N” and “W” models use single-ended interface signals. These signals must be terminated with 110-ohm active termination circuits at each end of the total cable. Single-ended circuits use open collector or three state driv- ers.

  • Page 75: Differential Drivers/Receivers

    Cheetah 4LP Product Manual, Rev. B 9.7.2 Differential drivers/receivers Differential drivers and receivers are used by the “WD” and “DC” models. Typical circuits are shown in Figure 21. The drive has no provisions for terminator circuits on differential I/O drives. Differential signals All differential interface signals consist of two lines denoted +SIGNAL and –SIGNAL.

  • Page 76: Figure 21. Typical Differential I/O Line Transmitter/Receiver And External Terminators

    See Section 9.7.2 for signal characteristics. I/O line terminators. If SCSI device is a Seagate disc drive, terminators and a place to plug them in must be provided external to the drive by user, systems integrator or host equipment manufacturer where needed.

  • Page 77: Terminator Requirements

    I/O cable stub extending past the last cable connector. Terminator power ST34501N and ST34501W drives You can configure terminator power in four different ways. See Section 8.1 for illustrations that show how to place jumpers enabling each of the following terminator power configurations: 1.

  • Page 78: Disc Drive Scsi Timing

    Cheetah 4LP Product Manual, Rev. B 9.10 Disc drive SCSI timing Table 14: Disc drive SCSI timing Waveform Waveform Description symbol [1] table [1] Typical timing <1 µs Target Select Time (no Arbitration) 2.31 µs Target Select Time (with Arbitration) 4.5-1,2 3.33 µs Target Select to Command...
  • Page 79 Cheetah 4LP Product Manual, Rev. B Table 14: Disc drive SCSI timing (Continued) Waveform Waveform Description symbol [1] table [1] Typical timing 0.04 µs max Data In Byte Transfer (parameter) 4.5-12 0.04 µs max Data Out Byte Transfer (parameter) 4.5-13 0.10 µs Next Data In Byte Access (parameter) 4.5-12...

  • Page 81: Seagate Technical Support Services

    Online technical support for Seagate products is available on CompuServe. To access our technical support forum, type go seagate . This forum provides information similar to that found on SeaBOARD. In addition, you can type questions or browse through previous questions and answers on the forum messages.
  • Page 82 . (Pacific time) Monday through Friday. Customer service centers Seagate direct OEM, Distribution, and System Integrator customers should contact their Seagate service rep- resentative for warranty information. Other customers should contact their place of purchase. Seagate offers comprehensive customer support for all Seagate drives. These services are available worldwide.
  • Page 83 Cheetah 4LP Product Manual, Rev. B Index per track 9 Numerics cabinet cooling 37 50-conductor connector 53 cable 48 50-conductor flat cable 51 shielded 51 50-pin connector 54 unshielded 51 68-conductor connector 53 cable characteristics 68-conductor flat cable 51 single-ended circuits 52 80-conductor connector 53 cable length 51 80-conductor interface 53...
  • Page 84 Cheetah 4LP Product Manual, Rev. B select jumper connector 31 drive interface connector 53 daisy-chain 18 drive internal defects and errors 29 80-conductor 53 drive internal diagnostics 18 terminating 51 drive malfunction 14 data correction 13 drive mounting 25 data transfer period 48 constraints 13 data transfer protocol 7 drive orientation 37...
  • Page 85 Cheetah 4LP Product Manual, Rev. B flat ribbon cable 63 termination 67 flaw reallocation 10 inquiry command 43 format inquiry vital product data 43 command 9 installation 31 drive 42 installation guide 4 low/high level 31 integrated SCSI controller 7 time 10 interface formatted capacities 8...
  • Page 86 Cheetah 4LP Product Manual, Rev. B mode sense command 43 overhead time 10 mode sense command page 08h 11 mode sense data 43 mode sense value 44 package size 23 model number table 5 package test specification 4 motor start command 10 packaged shock 23 motor start delay option 63 parity checking 36...
  • Page 87 SCSI-2/SCSI-3 45 read retry count 29 SCSI-2/SCSI-3 mode 40 read/write head 9 SCSI-3 (Fast-20) interface 5 ready 44 Seagate support service 31 receive diagnostic results 30 sector 11 recommended mounting 23 sector interleave 9 recoverable seek error 13 sector size 8...
  • Page 88 Cheetah 4LP Product Manual, Rev. B standards 3 start unit command 36 Ultra SCSI 5 start/stop time 10 unformatted capacities 8 status reporting 30 unrecoverable condition 13 status supported 47 unrecoverable error 13 STIR algorithm 7 unrecoverable seek error 13 stop spindle 10 unrecoverable write error 13 stop time 10...
  • Page 90 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 83329120, Rev. B, Printed in USA...

This manual is also suitable for:

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