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Seagate ST318203LW Product Manual

18lp family
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Cheetah 18LP Family:
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ST318203LW/LWV/LC/LCV
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ST318233LWV/LCV
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ST39103LW/LWV/LC/LCV
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ST39133LWV/LCV
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Product Manual, Volume 1
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Summary of Contents for Seagate ST318203LW

  • Page 1 ..........ST318203LW/LWV/LC/LCV .
  • Page 3 ..........ST318203LW/LWV/LC/LCV .
  • Page 4 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology, Inc. Cheetah, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either trademarks or registered trade- marks of Seagate Technology, Inc. or one of its subsidiaries. All other trademarks or registered trade- marks are the property of their respective owners.
  • Page 5 Revision status summary sheet Revision Date Writer/Engineer Sheets Affected Rev. A 12/01/98 L. Newman/D. Rusch 9, 10, 24, 25, 43, Rev. B 01/12/99 L. Newman/D. Rusch 7, 33, 45 and 47. Rev. C 02/19/99 L. Newman/D. Rusch Adds ST39103LW/LC data and rewords references to the SCSI I/O Manual.

  • Page 7: Table Of Contents

    Cheetah 18LP Product Manual, Rev. F Table of Contents Scope ................1 Applicable standards and reference documentation.
  • Page 8 Seagate Technology support services........
  • Page 9 Cheetah 18LP Product Manual, Rev. F List of Figures Figure 1. Cheetah 18LP family drive (LW model shown) ........1 Figure 2.

  • Page 11: Scope

    Ultra160 interface specifications to the extent described in this manual. The SCSI Interface Product Manual (part number 75789509) describes general SCSI interface characteristics of these Seagate drives. From this point on in this product manual the reference to Cheetah 18LP models is referred to as “the drive”...
  • Page 12 Cheetah 18LP Product Manual, Rev. F...

  • Page 13: Applicable Standards And Reference Documentation

    Mounting by bottom holes must meet the requirements of Section 8.4. Standards ST318203 and ST39103 drives comply with Seagate standards as noted in the appropriate sections of this Manual and the Seagate SCSI Interface Product Manual, part number 77738479.

  • Page 14: Reference Documents

    T10/1142D Rev. 14 SPI-2 (SCSI-3 Parallel Interface version 2) SFF-8046 Specification for 80-pin 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.) 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

    Number of active Number of I/O Number of I/O Model number heads I/O circuit type [1] connector pins data bus bits SCSI interface ST318203LW/LWV Single-ended (SE) Ultra2 ST39103LW/LWV and low voltage differential (LVD) ST318203LC/LCV Single-ended (SE) Ultra2 ST39103LC/LCV and low voltage...

  • Page 16: Figure 2. Cheetah 18Lp Family Drive

    Cheetah 18LP Product Manual, Rev. F 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.

  • Page 17: Standard Features

    Cheetah 18LP Product Manual, Rev. F Standard features The Cheetah 18LP family has the following standard features: • Integrated Ultra/Ultra2 SCSI controller (ST318203 and ST39103 models) • Integrated Ultra160 SCSI controller (ST318233 and ST39133 models) • Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD) •...

  • Page 18: Unformatted And Formatted Capacities

    Cheetah 18LP Product Manual, Rev. F 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 ST318203 and ST318233...

  • Page 19: Performance Characteristics

    Cheetah 18LP Product Manual, Rev. F Performance characteristics Internal drive characteristics (transparent to user) ST318203 ST39103 ST318233 ST39133 Drive capacity 18.2 9.10 18.2 9.10 GByte (formatted, rounded) Read/write heads Bytes/track 153,284– 153,284– 153,284– 153,284– Bytes (average, rounded) 229,045 229,045 229,045 229,045 Bytes/surface 1,913...

  • Page 20: Start/Stop Time

    Cheetah 18LP Product Manual, Rev. F Synchronous transfer rate for Ultra160 SCSI (ST318233 and ST39133 models): In single-ended (SE) interface mode 5.0 to 40 Mbytes/sec In low voltage differential (LVD) interface mode 5.0 to 160 Mbytes/sec Sector Sizes: Default 512 byte user data blocks Variable 512 to 4,096 bytes per sector in even number of bytes per sector.

  • Page 21: Caching Write Data

    Cheetah 18LP Product Manual, Rev. F table of logical block disk medium addresses of the data stored in each segment of the buffer. If cache opera- tion is enabled (RCD bit = 0 in Mode Page 08h, byte 2, bit 0. See the appropriate SCSI Interface Product Man- ual), data requested by the host with a Read command is retrieved from the buffer (if it is there), before any disc access is initiated.

  • Page 22: Prefetch Operation

    Cheetah 18LP Product Manual, Rev. F while writing the data to the medium, and GOOD status has already been returned, a deferred error will be generated. 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 23: Reliability Specifications

    Cheetah 18LP Product Manual, Rev. F 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 18LP Product Manual, Rev. F unrecoverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculations. Refer to the appropriate SCSI Interface Product Manual, for Request Sense information. Reliability and service You can enhance the reliability of Cheetah 18LP disc drives by ensuring that the drive receives adequate cool- ing.

  • Page 25: Preventive Maintenance

    Case 4 - Current I/O process allowed during insertion or removal, except on the device being changed Seagate Cheetah 18LP 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: S.m.a.r.t

    Cheetah 18LP Product Manual, Rev. F 5.2.8 S.M.A.R.T. S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize conditions that indicate a drive failure and is designed to provide sufficient warning of a failure to allow data back-up before an actual failure occurs.

  • 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 Cheetah 18LP Product Manual, Rev. F...

  • Page 29: Physical/Electrical Specifications

    Cheetah 18LP Product Manual, Rev. F Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Cheetah 18LP 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: Conducted Noise Immunity

    Cheetah 18LP Product Manual, Rev. F Operating condition is defined as random 8 block reads at 200 I/Os per second for ST318203 drive, 203 I/ Os per second for ST39103 drives, and 197 I/Os per second for ST318233 and ST39133 drives. Current and power specified at nominal voltages.

  • Page 31: Figure 3. Typical St318203 And St318233 Drive +12 V Current Profile

    Cheetah 18LP Product Manual, Rev. F +12 Volt Current during spindle start – Typical Amperes AC Envelope DC (average) of waveform T0 T1 T3 T4 Seconds Figure 3. Typical ST318203 and ST318233 drive +12 V current profile +12 Volt Current during spindle start – Typical Amperes Peak AC Envelope Peak DC T0 T1...

  • Page 32: Figure 5. Typical St318203 And St318233 Drive +5 V Current Profile

    Cheetah 18LP Product Manual, Rev. F +5 Volt Current during spindle start – Typical Amperes Current (amps) Component Nominal (average) DC curve Seconds Figure 5. Typical ST318203 and ST318233 drive +5 V current profile +5 Volt Current during spindle start – Typical Amperes Current (amps) Component...

  • Page 33: Power Dissipation

    Cheetah 18LP Product Manual, Rev. F Power dissipation ST318203 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 10.65 watts (36.3 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 10.75 watts (36.7 BTUs per hour).

  • Page 34: Figure 9. St39103 Dc Current And Power Vs. Input/Output Operations Per Second (Se)

    Cheetah 18LP Product Manual, Rev. F ST39103 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 7.63 watts (26 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 7.68 watts (26.2 BTUs per hour).

  • Page 35: Figure 11. St318233 Dc Current And Power Vs. Input/Output Operations Per Second (Se)

    Cheetah 18LP Product Manual, Rev. F ST318233 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 11.8 watts (40.27 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 12.2 watts (41.63 BTUs per hour).

  • Page 36: Figure 13. St39133 Dc Current And Power Vs. Input/Output Operations Per Second (Se)

    Cheetah 18LP Product Manual, Rev. F ST39133 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 9.4 watts (32 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 9.8 watts (33.4 BTUs per hour).

  • Page 37: Environmental Limits

    Cheetah 18LP Product Manual, Rev. F Environmental limits Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C).

  • Page 38: Relative Humidity

    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 39: 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 40: Figure 16. Recommended Mounting

    Cheetah 18LP Product Manual, Rev. F Figure 16. Recommended mounting...

  • Page 41: Vibration

    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 42: Mechanical Specifications

    Cheetah 18LP Product Manual, Rev. F 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 17 and 18 for detailed mounting configuration dimensions.

  • Page 43: Figure 18. Lc And Lcv Mounting Configuration Dimensions

    Cheetah 18LP Product Manual, Rev. F 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 44 Cheetah 18LP Product Manual, Rev. F...

  • Page 45: Defect And Error Management

    Cheetah 18LP Product Manual, Rev. F 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 18LP Product Manual, Rev. F Table 5: 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) 65.7 35.8 77.6 53.7 89.6...

  • Page 47: 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 48: Figure 19. J6 Jumper Header

    Cheetah 18LP Product Manual, Rev. F 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 49: Figure 20. J5 Jumper Header (On Lw And Lwv Models Only)

    Cheetah 18LP Product Manual, Rev. F 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 19, 20, And 21

    Cheetah 18LP Product Manual, Rev. F 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 51: Function Description

    Cheetah 18LP Product Manual, Rev. F 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 52: Drive Orientation

    Cheetah 18LP Product Manual, Rev. F 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 18LP Product Manual, Rev. F...

  • Page 55: 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 appropriate Seagate SCSI Interface Product Manual (P/N 77738479 for ST318203 and ST39103 drives and P/N 75789509 for ST318233 and ST39133 drives).

  • Page 56: Scsi Interface Commands Supported

    Cheetah 18LP Product Manual, Rev. F 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 18LP Family drives can be changed back and forth between SCSI-1 and SCSI-2/SCSI-3 modes using the Change Definition Command.
  • Page 57 Cheetah 18LP Product Manual, Rev. F Table 7: Commands supported by Cheetah 18LP family drive (Continued) Command Supported by Command name code SCSI-2/3 Mode sense Y [2] Caching parameters page (08h) Control mode page (0Ah) Disconnect/reconnect (02h) Error recovery page (01h) Format page (03h) Information exceptions control page (1Ch) Notch and Partition Page (0Ch)
  • Page 58 Cheetah 18LP Product Manual, Rev. F Table 7: Commands supported by Cheetah 18LP family drive (Continued) Command Supported by Command name code SCSI-2/3 Send diagnostics Supported diagnostics pages (00h) Translate page (40h) Set limits Start unit/stop unit (spindle ceases rotating) (1Ch) Synchronize cache Test unit ready Verify...

  • Page 59: Inquiry Vital Product Data

    S# Eight ASCII digits representing the eight digits of the product serial number. Bytes 18 through 26 reflect model of drive. Shown here are hex values for Model ST318203LW. For ST39103 drives, bytes 18 through 23 are: 33 39 31 30 33 00.

  • Page 60: Mode Sense Data

    Cheetah 18LP Product Manual, Rev. F 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 18LP Product Manual, Rev. F 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 appropriate SCSI Interface Product Manual). Definitions: = Default value.
  • Page 62 Cheetah 18LP Product Manual, Rev. F Table 10: Mode sense data, ST39103 and ST39133 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 9F 00 10 08 01 0F 59 C8 00 00 02 Sense...

  • Page 63: Scsi Bus Conditions And Miscellaneous Features Supported

    Cheetah 18LP Product Manual, Rev. F 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 64: Synchronous Data Transfer

    Cheetah 18LP Product Manual, Rev. F Synchronous data transfer 9.5.1 Synchronous data transfer periods supported ST318203 and ST39103 models: Table 12 lists the synchronous data transfer periods supported by the drive. The data transfer period to be used by the drive and the initiator is established by an exchange of messages during the Message Phase of opera- tion.

  • Page 65: Physical Interface

    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 LW and LWV model drives receive DC power through a 4 pin connector (see Figure 25 for pin assignment) mounted at the rear of the main PCBA.

  • Page 66: Figure 23. Lw And Lwv Model Drive Physical Interface (68-Pin J1 Scsi I/O Connector)

    Cheetah 18LP Product Manual, Rev. F 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 23. LW and LWV model drive physical interface (68-pin J1 SCSI I/O connector) 80-pin SCSI I/O Connector...

  • Page 67: Scsi Interface Physical Description

    Cheetah 18LP Product Manual, Rev. F 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-2 (SPI-2) standards as defined in American National Standard document X3T10/1142D revi- sion 14, and operate compatibly at the interface with devices that support earlier SCSI-2 and SCSI-3 stan- dards.

  • Page 68: Scsi Interface Cable Requirements

    Cheetah 18LP Product Manual, Rev. F 9.6.3 SCSI interface cable requirements The characteristics of cables used to connect SCSI-3 parallel interface devices are discussed in detail in sec- tion 6 of ANSI Standard X3T10/1142D. The cable characteristics that must be considered when interconnect- ing the drives described in this manual in a SCSI-3 parallel, daisy-chain interconnected system are: •...

  • Page 69: Mating Connectors For Lc And Lcv Model Drives

    Cheetah 18LP Product Manual, Rev. F 9.6.4.2 Mating connectors for LC and LCV model drives The nonshielded connector shall be an 80-conductor connector consisting of two rows of 40 contacts with adja- cent contacts 50 (1.27 mm) mils apart (see Figure 27). I/O connection using a cable is not recommended. The length and size of the host equipment DC power carrying conductors from the DC power source to the host equipment 80-pin disk drive interface connector(s) should be strictly designed according to proper power trans- mission design concepts.

  • Page 70: Figure 25. Scsi Daisy Chain Interface Cabling For Lw And Lwv Drives

    Cheetah 18LP Product Manual, Rev. F 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 71: Figure 26. Nonshielded 68 Pin Scsi Device Connector Used On Lw And Lwv Drives

    Cheetah 18LP Product Manual, Rev. F 3.650±.005 .346 .270 . 1 55 1.650 .3937 .600 .050 .0787 .200 .022 .020 .047 (15.24) .519 (13.18) (5.08) .100 Pos. 1.816 (2.54) .315 .085 (46.13) Pos. Position 1 x 45° chamfer (8.00) (2.16) .315 ±...

  • Page 72: Figure 27. Nonshielded 80 Pin Scsi "Sca-2" Connector, Used On Lc And Lcv Drives

    Cheetah 18LP Product Manual, Rev. F 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 ± 0.15 62.15 (2.447) (±...
  • Page 73 Cheetah 18LP Product Manual, Rev. F Table 16: 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 74 Cheetah 18LP Product Manual, Rev. F Table 17: 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 18LP Product Manual, Rev. F Table 18: 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 18LP Product Manual, Rev. F Table 19: 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 18LP Product Manual, Rev. F Notes [ ] for Tables 16 through 19. 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 78: Figure 28. Lvd Output Signals

    Cheetah 18LP Product Manual, Rev. F Steady state Low level output voltage* = –.95 V = < V = < –1.55 V (signal negation/logic 0) Steady state High level output voltage* = –.95 V = < V = < 1.55 V (signal assertion/logic 1) Differential voltage = +0.6 V minimum with common-mode voltage ranges 0.700 V = <...

  • Page 79: Single-Ended Drivers/Receivers

    Cheetah 18LP Product Manual, Rev. F 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 20 lists the maximum lengths allowed for different configurations of drive usage.

  • Page 80: Disc Drive Scsi Timing

    Cheetah 18LP Product Manual, Rev. F 9.10 Disc drive SCSI timing Table 21: Disc drive SCSI timing These values are not current Cheetah 18LP 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...

  • Page 81: Drive Activity Led

    Cheetah 18LP Product Manual, Rev. F Table 21: Disc drive SCSI timing (Continued) These values are not current Cheetah 18LP values, but are listed for information only. Waveform Waveform Description symbol [1] table [1] Typical timing 0.12 µs ±1 µs Next CDB Byte Access (Byte 10 of 10) T23.10.10 4.5-4...
  • Page 82 Cheetah 18LP Product Manual, Rev. F...

  • Page 83: Seagate Technology Support Services

    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. Disc: 1-877-271-3285; Tape: 1-800-626-6637. Online Tape Purchases US customers can purchase Seagate data cartridges, tape supplies, accessories, and select Seagate tape drive products 24 hours daily at http://buytape.seagate.com.
  • Page 84 USA/Canada/Latin America Support Services Presales Support Disc: 1-877-271-3285 or +1-405-936-1210 FAX: +1-405-936-1683 Tape: 1-800-626-6637 or +1-714-641-2500 FAX: +1-714-641-2410 Technical Support (SeaFONE) 1-800-SEAGATE or +1-405-936-1234 (for specific product phone number) FAX: Disc: +1-405-936-1685; Tape: +1-405-936-1683 SeaFAX 1-800-SEAGATE SeaTDD +1-405-936-1687 SeaBOARD Disc: +1-405-936-1600; Tape: +1-405-936-1630...
  • Page 85 Cheetah 18LP Product Manual, Rev. F Turkey 00 800-31 92 91 40 United Kingdom 0 800-783 5177 SeaBOARD Germany +49-89-1409331 Fax Services—All European Countries Presales/Technical Support/Warranty Service 31-20-653-3513 Africa/Middle East Support Services For presales, technical support, warranty service and FAX services in Africa and the Middle East, dial our European call center at +31-20-316-7222 from 8:30 a.m.
  • Page 86 Cheetah 18LP Product Manual, Rev. F...
  • Page 87 Cheetah 18LP Product Manual, Rev. F Index bytes/surface 9 bytes/track 9 Symbols cabinet cooling 42 +5 and +12 volt supplies 20 cable 55 Numerics cache 10 cache buffer 7 68 conductor connector 58 cache miss 11 68-pin connector 60 cache mode 10 80 conductor connector 59 cache operation 10 80 conductor interface 59...
  • Page 88 Cheetah 18LP Product Manual, Rev. F DC power 10 ECC correction capability 7 DC power carrying conductor 59 electrical characteristics 55 DC power connector 55 electromagnetic compatibility 3 DC power requirements 19 electromagnetic interference (EMI) 13 DC power source 59 electromagnetic susceptibility 31 dedicated landing zone 5 embedded servo 7...
  • Page 89 Cheetah 18LP Product Manual, Rev. F host 12 mating connector 55 host adapter 37 mating flat cable connector 58 adapter/initiator 60 maximum current requirements 20 host backplane wiring 57 maximum operating current 20 host equipment 43 maximum starting current 19 DC power 59 ME jumper 41 host I/O signal 37...
  • Page 90 Cheetah 18LP Product Manual, Rev. F operator intervention 13 preventive maintenance 13 option jumper 37 printed circuit board. See PCB option jumper location 37 PRML read channel electronics 5 option select header 55 product data page 49 option select jumper 37 programmable drive capacity 8 options 8 orientation 10...
  • Page 91 13 SCSI-1 mode 46 SCSI-2/SCSI-3 51 SCSI-2/SCSI-3 mode 46 technical support services 73 SE 67 temperature 10 Seagate support service 37 ambient 27 sector 11 case 27 sector interleave 9 gradient 27 sector size 8 non-operating 28...
  • Page 92 Cheetah 18LP Product Manual, Rev. F write protect 41 write retry count 35 zoned bit recording (ZBR) 7...
  • Page 94 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 83329400, Rev. F, Printed in USA...

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