Seagate ST3146855LC - Cheetah 146.8 GB Hard Drive Product Manual
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Seagate ST3146855LC - Cheetah 146.8 GB Hard Drive Product Manual

Seagate ST3146855LC - Cheetah 146.8 GB Hard Drive Product Manual

Cheetah 15k.5 scsi product manual
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Product Manual
Cheetah 15K.5 SCSI
ST3300655LW
ST3300655LC
ST3146855LW
ST3146855LC
ST373455LW
ST373455LC
100384776
Rev. H
May 2009

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Summary of Contents for Seagate ST3146855LC - Cheetah 146.8 GB Hard Drive

  • Page 1 Product Manual Cheetah 15K.5 SCSI ST3300655LW ST3300655LC ST3146855LW ST3146855LC ST373455LW ST373455LC 100384776 Rev. H May 2009...
  • Page 2 United States and/or other countries. Cheetah, SeaTools and SeaTDD are either trademarks or reg- istered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/ or other countries. All other trademarks or registered trademarks are the property of their respective own- ers.

  • Page 3: Table Of Contents

    Contents Scope ............... . 1 Applicable standards and reference documentation .
  • Page 4 Seagate Technology support services ........
  • Page 5 List of Figures Figure 1. Typical ST3300655LW drive +5 V LVD current profile ......26 Figure 2.

  • Page 7: Scope

    Cheetah 15K.5 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 Manual (part number 100293069) describes general SCSI interface characteristics of this and other families of Seagate drives.
  • Page 8 Cheetah 15K.5 SCSI Product Manual, Rev. H...

  • Page 9: Applicable Standards And Reference Documentation

    Mounting by bottom holes must meet the requirements of Section 8.4. Standards The Cheetah 15K.5 SCSI family complies with Seagate standards as noted in the appropriate sections of this Manual, the Seagate Parallel SCSI Interface Manual, part number 100293069, and the SCSI Commands Ref- erence Manual, part number 100293068.

  • Page 10: Electromagnetic Compliance

    Lead (Pb), in electronic products effective July 2006. A number of parts and materials in Seagate products are procured from external suppliers. We rely on the rep- resentations of our suppliers regarding the presence of RoHS substances in these parts and materials. Our...

  • Page 11: Reference Documents

    Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws and regulations which restrict chemical content in electronic products. These systems include standard operat- ing procedures that ensure that restricted substances are not utilized in our manufacturing operations, labora- tory analytical validation testing, and an internal auditing process to ensure that all standard operating procedures are complied with.
  • Page 12 Cheetah 15K.5 SCSI Product Manual, Rev. H...

  • Page 13: General Description

    Cheetah 15K.5 SCSI family of drives, the Parallel SCSI Interface Manual, part number 100293069, and the SCSI Commands Reference Manual, part number 100293068, which describe the gen- eral interface characteristics of this and other families of Seagate SCSI drives. The drive’s interface supports multiple initiators, disconnect/reconnect, self-configuring host software, and log- ical block addressing.

  • Page 14: Standard Features

    An automatic shipping lock prevents potential damage to the heads and discs that results from movement dur- ing shipping and handling. The shipping lock automatically disengages when power is applied to the drive and the head load process begins. A high-performance actuator assembly with a low-inertia, balanced, patented, straight-arm design provides excellent performance with minimal power dissipation.

  • Page 15: Performance

    136,331,467 82040CBh 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 16: Programmable Drive Capacity

    3.5.1 Programmable drive capacity Using the Mode Select command, the drive can change its capacity to something less than maximum. See the Mode Select Parameter List table in the SCSI Interface Manual. Refer to the Parameter list block descriptor number of blocks field. A value of zero in the number of blocks field indicates that the drive shall not change the capacity it is currently formatted to have.

  • Page 17: Performance Characteristics

    Performance characteristics Internal drive characteristics (transparent to user) ST3300655LW ST3146855LW ST373455LW ST3300655LC ST3146855LC ST373455LC Drive capacity 300.0 146.8 73.4 GBytes (formatted)* Read/write heads Tracks/surface (total) 74,340 74,340 74,340 Tracks (user accessible) Tracks/inch 125,000 125,000 125,000 Peak bits/inch 890k 890k 890k Areal Density Gbits/inch Internal data rate...

  • Page 18: Seek Time

    4.2.1 Seek 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 19: Start/Stop Time

    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). If a recoverable error condition is detected during the start sequence, the drive executes a recovery procedure which may cause the time to become ready to exceed 20 seconds.

  • Page 20: Caching Write Data

    Each cache segment is actually a self-contained circular buffer whose length is an integer number of logical blocks. The drive dynamically creates and removes segments based on the workload. The wrap-around capa- bility of the individual segments greatly enhances the cache’s overall performance. Note.

  • Page 21: 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 22: 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 23: Hot Plugging Cheetah 15K.5 Scsi Disc Drives

    Case 4 - Current I/O process allowed during insertion or removal, except on the device being changed Seagate Cheetah 15K.5 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 24 Controlling S.M.A.R.T. The operating mode of S.M.A.R.T. is controlled by the DEXCPT bit and the PERF bit of the “Informational Exceptions Control Mode Page” (1Ch). The DEXCPT bit is used to enable or disable the S.M.A.R.T. process. Setting the DEXCPT bit will disable all S.M.A.R.T. functions. When enabled, S.M.A.R.T. will collect on-line data as the drive performs normal read/write operations.

  • Page 25: Thermal Monitor

    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. Cheetah 15K.5 SCSI Product Manual, Rev. H...
  • Page 26 DST. It is the responsibility of the host application to determine the “not ready” cause. While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.

  • Page 27: 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 28 Shipping When transporting or shipping a drive, a Seagate approved container must be used. Keep your original box. They are easily identified by the Seagate-approved package label. Shipping a drive in a non-approved con- tainer voids the drive warranty. Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in tran- sit.

  • Page 29: Physical/Electrical Specifications

    Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Cheetah 15K.5 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 30 Table 4: ST3146855LC DC power requirements LVD mode Notes Voltage +5 V +12 V Regulation ±5% ±5% [2] Average idle current DC [1][6] 0.71 0.57 Maximum starting current (peak DC) DC 0.74 1.94 3σ (peak AC) AC 1.04 3.32 3σ Delayed motor start (max) DC [1] [4] 0.56...

  • Page 31: Conducted Noise Immunity

    starting current must be available to each device. 4. Parameters, other than spindle start, are measured after a 10-minute warm up. 5. No terminator power. 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 connector.
  • Page 32 Figure 1. Typical ST3300655LW drive +12V LVD current profile Figure 2. Typical ST3300655LW drive +5 V LVD current profile Cheetah 15K.5 SCSI Product Manual, Rev. H...

  • Page 33: Power Dissipation

    Power dissipation ST3300655LW/ST3300655LC For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 13.1 watts (44.70 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 3).
  • Page 34 ST3146855LW/ST3146855LC For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 10.39 watts (35.45 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 4).
  • Page 35 ST373455LW/ST373455LC For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 8.49 watts (28.97 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 5).

  • Page 36: 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 37: Shock And Vibration

    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 38 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. Figure 7.

  • Page 39: 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 40: 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 41 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 42 Cheetah 15K.5 SCSI Product Manual, Rev. H...

  • Page 43: Defect And Error Management

    Defect and error management Seagate continues to use innovative technologies to manage defects and errors. These technologies are designed to increase data integrity, perform drive self-maintenance, and validate proper drive operation. SCSI defect and error management involves drive internal defect/error management and SCSI system error considerations (errors in communications between the initiator and the drive).
  • Page 44 Table 6 equates the Read and Write Retry Count with the maximum possible recovery time for read and write recovery of individual LBAs. The times given do not include time taken to perform reallocations, if reallocations are performed. Reallocations are performed when the ARRE bit (for reads) or AWRE bit (for writes) is one, the RC bit is zero, and the Recovery Time Limit for the command has not yet been met.

  • Page 45: Scsi Systems Errors

    SCSI systems errors Information on the reporting of operational errors or faults across the interface is given in the SCSI Interface Product Manual. Message Protocol System is described in the SCSI Interface Product Manual. Several of the messages are used in the SCSI systems error management system. The Request Sense command returns information to the host about numerous kinds of errors or faults.

  • Page 46: Deferred Auto-Reallocation

    DAR is most effective when AWRE and ARRE are enabled—this is the default setting from the Seagate factory. With AWRE and ARRE disabled DAR is unable to reallocate the failing location and will report an error sense code indicating that a write command is being attempted to a previously failing location.

  • Page 47: Installation

    Suggested part number for the jumpers used on J6 is Molex 52747-0211 (Seagate part number 77679052). A bag with the two jumper plug types is shipped with the standard OEM drives.
  • Page 48 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 49: Notes For Figures 10 And 11

    Drive Front Jumper Plug (enlarged to show detail) Pin 1 Reserved [1] [5] Term. Power to SCSI Bus Parity Disable Delay Motor Start Enable Remote Motor Start Write Protect Force Single-ended Bus Mode Figure 11. J6 option select header (on LW models only) 8.1.1 Notes for Figures 10 and 11.

  • Page 50: 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 51: 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 52: 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 53: Interface Requirements

    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 Parallel SCSI Interface Manual and the SCSI Commands Reference Manual .

  • Page 54: Scsi Interface Commands Supported

    Table 7: SCSI messages supported by Cheetah 15K.5 SCSI family drives Supported (Y = yes) Message name Message code (N = no) Ordered queue tag Simple queue tag Quick Arbitration and Selection (QAS) Release recovery Restore pointers Save data pointer Synchronous data transfer req.
  • Page 55 Table 8: Commands supported by Cheetah 15K.5 SCSI family drive (Continued) Command name Command code Supported by SCSI-2/3 Lock-unlock cache Log Select PCR bit DU bit DS bit TSD bit ETC bit TMC bit LP bit Log Sense Application Client Log page (0Fh) Background Medium Scan page (15h) Buffer Over-run/Under-run page (01h) Cache Statistics page (37h)
  • Page 56 Table 8: Commands supported by Cheetah 15K.5 SCSI family drive (Continued) Command name Command code Supported by SCSI-2/3 Rigid Disc Drive Geometry page (04h) Unit Attention page (00h) Verify Error Recovery page (07h) Xor Control page (10h) Mode Sense (10) (same pages as Mode Sense 1Ah) Prefetch Read Read Buffer (modes 0, 2, 3, Ah and Bh supported)
  • Page 57 Table 8: Commands supported by Cheetah 15K.5 SCSI family drive (Continued) Command name Command code Supported by SCSI-2/3 Translate page (40h) Set Limits Start Unit/Stop Unit (spindle ceases rotating) Synchronize Cache Test Unit Ready Verify BYTCHK bit Write Write and Verify DPO bit Write Buffer (modes 0, 2, supported) Firmware Download option...

  • Page 58: 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 59: 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 60 Table 10: ST3300655 Mode sense data MODE SENSE HEADER DATA ab 00 10 08 22 ec b2 5c 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 DEF 82 0e 80 80 00 0a 00 00 00 00 00 00 00 00 00 00...
  • Page 61 Table 11: ST3146855 Mode sense data MODE SENSE HEADER DATA ab 00 10 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 DEF 82 0e 80 80 00 0a 00 00 00 00 00 00 00 00 00 00...
  • Page 62 Table 12: ST373455 Mode sense data MODE SENSE HEADER DATA ab 00 10 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 DEF 82 0e 80 80 00 0a 00 00 00 00 00 00 00 00 00 00...

  • Page 63: 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 Parallel SCSI Interface Manual and the SCSI Commands Reference Manual for details.

  • Page 64: 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 Parallel SCSI Interface Manual. Cheetah 15K.5 SCSI Product Manual, Rev. H...

  • Page 65: Dc Cable And Connector

    9.6.1 DC cable and connector LW model drives receive DC power through a 4-pin connector (see Figure 15 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 66: Scsi Interface Physical Description

    80-pin SCSI I/O Connector Pin 1 Figure 14. LC model drive physical interface (80-pin J1 SCSI I/O connector) 9.6.2 SCSI interface physical description Cheetah 15K.5 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.

  • Page 67: Scsi Interface Cable Requirements

    Table 16 shows the interface transfer rates supported by the various drive models defined in this manual. Table 16: 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) ST3300655LW/LC ST3146855LW/LC...
  • Page 68 9.6.4.1 Mating connectors for LW model drives The nonshielded cable connector shall be a 68 conductor connector consisting of two rows of 34 male contacts with adjacent contacts 0.050 inch (1.27 mm) apart. Recommended mating flat cable connector part numbers are: Amp Model 786096-7 Female, 68-pin, panel mount Amp Model 786090-7...
  • Page 69 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 70 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 (8.00) .050 Pos. 35 +.001 .218 (1.27)
  • Page 71 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 72 Table 17: 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 73 Table 18: 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 74 Table 19: 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 75 Table 20: 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 76: Electrical Description

    Notes [ ] for Tables 17 through 20. 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 77 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 78 Single-ended I/O cable pin assignments for LW drives are shown in Table 18. Single-ended I/O pin assignments for LC models are shown in Table 19. 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 79: 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 80: Disc Drive Scsi Timing

    9.10 Disc drive SCSI timing Table 24: Disc drive SCSI timing These values are not current Cheetah 15K.5 SCSI values, but are listed for information only. 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...
  • Page 81 Table 24: Disc drive SCSI timing (Continued) These values are not current Cheetah 15K.5 SCSI values, but are listed for information only. Waveform Waveform Description symbol [1] table [1] Typical timing 0.59 μs Next CDB Byte Access (Byte 2 of 10) T23.10.2 4.5-4 0.11 μs ±1 μs...

  • Page 82: Drive Activity Led

    9.11 Drive activity LED The following table provides drive activity LED status. Table 25: 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 83: Seagate Technology Support Services

    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 product availability and compatibility. Technical Support Seagate technical support is available to assist you online at support.seagate.com...
  • Page 84 Seagate Customer Service Operations (CSO) representative for warranty- related issues. Resellers or end users of drive products should contact their place of purchase or Seagate warranty service for assistance. Have your serial number and model or part number available.
  • Page 85 Index bytes per sector 51 Symbols cable 59 +5 and +12 volt supplies 24 cache 13 cache buffer 9 Numerics cache mode 13 cache operation 13 68-conductor connector 62 cache segments 14 68-pin connector 63 caching write data 14 80 conductor connector 62 Canadian Department of Communications 3 80 conductor interface 62 capacities 10...
  • Page 86 default 43 EVPD bit 52 default mode parameter 41 execution time 12 default value 53 extended messages 48 defect/error management 37 defects 37 Deferred Auto-Reallocation 40 FCC rules and regulations 3 delayed motor start option 23 firmware 53 delayed start 44 flat ribbon cable 70 differential I/O circuit 44 flaw reallocation 12...
  • Page 87 interface timing 15 MTBF 15 internal data rate 11 multiconnector IRAW 40 80 conductor 62 multimode drivers and receivers 8 multi-segmented cache control 13 J1-auxiliary 41 jumper 10 jumper function description 44 noise 25 jumper header 43 audible 3 jumper plug type 41 non-operating 30 temperature 30 non-operating vibration 33...
  • Page 88 13 SCSI systems error 39 prefetch operation 13 SCSI systems error management 39 prefetch segmented cache control 13 Seagate support service 41 preventive maintenance 15 sector sizes 12 product data page 52 seek error 15 programmable drive capacity 10 defined 16 Self-Monitoring Analysis and Reporting Technology.
  • Page 89 TP1 position 44 tracks/inch 11 tracks/surface, total 11 transfer period 58 transmitter receiver circuits 71 Tunneling Magnetoresistive heads 7 Ultra160 53 Ultra160 mode 48 Ultra160 SCSI interface 7 Ultra320 SCSI controller 8 unformatted 9 Unrecoverable Errors 15 vibration 31 vital product data 52 volatile memory 53 voltage 23 warranty 9...
  • Page 92 Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100384776, Rev. H, Printed in USA...

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