Seagate ST39175LW Product Manual
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Seagate ST39175LW Product Manual

Seagate ST39175LW Product Manual

18lp family
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Barracuda 18LP Family:
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ST39175LW/LC
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ST318275LW/LC
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Product Manual, Volume 1
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Summary of Contents for Seagate ST39175LW

  • Page 1 ..........ST39175LW/LC .
  • Page 3 ..........ST39175LW/LC .
  • Page 4 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology, LLC. Barracuda, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either trademarks or registered trademarks of Seagate Technology, LLC or one of its subsidiaries. All other trademarks or registered trademarks are the prop- erty of their respective owners.
  • Page 5 Revision status summary sheet Revision Date Writer/Engineer Sheets Affected Rev. A 01/06/99 D. Ashby/P. Kusbel 1/1, v thru viii, 1-82 Rev. B 02/04/99 D. Ashby/Tim Walker 1/1, technical changes page 12 Rev. C 04/05/99 D. Ashby/Tim Walker 1/1, 4, 10, 14, 15, 19, 20, 22-25, 33, 35, 36, 37, 39, 41, 45, 47, 50-55, 57, 60-65, and 67.

  • Page 7: Table Of Contents

    Barracuda 18LP Product Manual, Rev. E Table of Contents Scope ................1 Applicable standards and reference documentation.
  • Page 8 Seagate Technology support services........
  • Page 9 Barracuda 18LP Product Manual, Rev. E List of Figures Figure 1. Barracuda 18LP family drive ..........1 Figure 2.

  • Page 11: Scope

    Barracuda 18LP Product Manual, Rev. E Scope This manual describes the Seagate Technology®, LLC, Barracuda 18LP™ disc drives. Barracuda 18LP drives support the small computer system interface (SCSI) as described in the ANSI SCSI, SCSI-2, and SCSI-3 (Fast-20 and Fast-40) interface specifications to the extent described in this manual. The SCSI Interface 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 Barracuda 18LP family complies with Seagate standards as noted in the appropriate sections of this Man- ual and the Seagate SCSI Interface Product Manual, part number 77738479 (Vol. 2).

  • Page 14: Reference Documents

    X3T10/1143D SFF-8046 Specification for 80-pin connector for SCSI disk drives SCA-2 EIA Specification ANSI/EIA 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

    Barracuda 18LP family of drives, and the SCSI Interface Product Manual (vol- ume 2), part number 77738479, which describes the general 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 automatic features that relieve the host from the necessity of knowing the physical characteristics of the targets (logical block addressing is used).

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

    Barracuda 18LP Product Manual, Rev. E Figure 2. Barracuda 18LP family drive...

  • Page 17: Standard Features

    Barracuda 18LP Product Manual, Rev. E Standard features The Barracuda 18LP family has the following standard features: • Integrated SCSI controller • SCSI multimode single-ended or low voltage differential drivers and receivers • 8 bit or 16 bit I/O data bus models available •...

  • Page 18: Unformatted And Formatted Capacities

    Barracuda 18LP Product Manual, Rev. E 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 read capacities data. Total LBAs = read capacity data shown below +1.

  • Page 19: Performance Characteristics

    Barracuda 18LP Product Manual, Rev. E Performance characteristics Internal drive characteristics (transparent to user) ST39175 ST318275 Drive capacity 18.2 Gbyte (formatted, rounded off values) Read/write heads Bytes/track Kbytes (average, rounded off values) Bytes/surface 2,184 2,184 Mbytes (unformatted, rounded off values) Tracks/surface (total) 11,721 11,721...

  • Page 20: Start/Stop Time

    Barracuda 18LP Product Manual, Rev. E SCSI interface data transfer rate (asynchronous) [5]: Maximum instantaneous 3.5 Mbytes/sec [6] Maximum average 3.5 Mbytes/sec [7] Synchronous transfer rate for SCSI Fast-20 (Ultra-1 SCSI): 16 bit data bus models 40 Mbytes/sec Synchronous transfer rate for SCSI Fast-40 (Ultra-2 SCSI): 16 bit data bus models 80 Mbytes/sec Synchronous transfer rate for fast SCSI-2:...

  • Page 21: Prefetch/Multi-Segmented Cache Control

    Barracuda 18LP Product Manual, Rev. E Prefetch/multi-segmented cache control The drive provides prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system performance. “Cache” as used herein refers to the drive buffer storage space when it is used in “cache”...

  • Page 22: Caching Write Data

    Barracuda 18LP Product Manual, Rev. E 4.5.1 Caching write data Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to the medium is stored in one or more segments while the drive performs the write command. If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made avail- able for future read cache hits.

  • Page 23: Reliability Specifications

    Barracuda 18LP Product Manual, Rev. E 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: Seek Errors

    Barracuda 18LP Product Manual, Rev. E 5.1.4 Seek errors A seek error is defined as a failure of the drive to position the heads to the addressed track. There shall be no more than ten recoverable seek errors in 10 physical seek operations.

  • Page 25: Hot Plugging Barracuda 18Lp Disc Drives

    Case 4 Current I/O process allowed during insertion or removal, except on the device being changed Seagate Barracuda 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: 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 Barracuda 18LP Product Manual, Rev. E 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.

  • Page 29: Physical/Electrical Specifications

    Barracuda 18LP Product Manual, Rev. E Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Barracuda 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

    Barracuda 18LP Product Manual, Rev. E 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 31: Figure 3B. Typical Barracuda 18Lp Family Drive +5 V Current Profile

    Barracuda 18LP Product Manual, Rev. E Current (amps) TIME (seconds) Figure 3b. Typical Barracuda 18LP family drive +5 V current profile...

  • Page 32: Power Dissipation

    Barracuda 18LP Product Manual, Rev. E Power dissipation To obtain drive typical operating random read (8 blocks) power dissipation at nominal voltages, refer to Figures 3c and 3d. The drive user can decide for themselves what number of I/O operations constitutes a typical num- ber of I/O operations for their installation.

  • Page 33: Figure 3E. Dc Current And Power Vs. Input/Output Operations Per Second For St39175 Drives

    Barracuda 18LP Product Manual, Rev. E 5V A 12V A Watts Watts I/Os per Second Figure 3e. DC current and power vs. input/output operations per second for ST39175 drives (LVD only) 5V A 12V A Watts Watts I/Os per Second Figure 3f.

  • Page 34: Environmental Limits

    PCBA mounted integrated circuit case. b. Non-operating –40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 45°F (25°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive.

  • Page 35: Figure 4. Locations Of Pcba Components Listed In Table 3

    Barracuda 18LP Product Manual, Rev. E HDA Temp. Check Point Model “LC” PCBA [1] Model “LW” PCBA [1] PCBA 1 PCBA 2 [1] Bottom side of PCBA Figure 4. Locations of PCBA components listed in Table 3...

  • Page 36: Relative Humidity

    Barracuda 18LP Product Manual, Rev. E 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 37: 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 lbs/45 kg) or 30191-001 (over 100 lbs/45 Kg).

  • Page 38: Air Cleanliness

    Air cleanliness The drive is designed to operate in a typical office environment with minimal environmental control. 6.4.6 Acoustics Sound power during idle mode shall be 4.1 bels typical when measured to Seagate’s 30553-001 specification. 6.4.7 Electromagnetic susceptibility See Section 2.1.2.

  • Page 39: Mechanical Specifications

    Barracuda 18LP Product Manual, Rev. E Mechanical specifications The following nominal dimensions are for information only. Refer to Figures 6a and 6b for detailed (toleranced) mounting configuration dimensions. See Section 8.4, “Drive mounting.” Height: 1.000 in 25.4 mm Width: 4.000 in 101.6 mm Depth: 5.75 in...

  • Page 40: Figure 6B. Mounting Configuration Dimensions For "Lc" Model

    Barracuda 18LP Product Manual, Rev. E Notes: Mounting holes three on each side, 6-32 UNC. Max screw length into 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).

  • Page 41: Defect And Error Management

    Barracuda 18LP Product Manual, Rev. E 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 42: Scsi Systems Errors

    Barracuda 18LP Product Manual, Rev. E Table 4: Read and write retry count maximum recovery times [1] Read retry Maximum recovery time per Write retry Maximum recovery time per count LBA (cumulative, msec) count LBA (cumulative, msec) 108.68 91.96 125.4 117.04 426.36 125.4...

  • Page 43: Installation

    • Installation instructions are provided by host system documentation or with any additionally purchased drive installation software. If necessary see Section 10 for Seagate support services telephone numbers. • Do not remove the manufacturer’s installed labels from the drive and do not cover with additional labels, as the manufacturer labels contain information required when servicing the product.

  • Page 44: Figure 7A. Barracuda 18Lp Family Drive Id Select

    Barracuda 18LP Product Manual, Rev. E 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 45: Figure 7B. Barracuda 18Lp Family Drive Id Select Header J5 For "Lw" Model (J5 Pins 1-12)

    Barracuda 18LP Product Manual, Rev. E Drive HDA (rear view, PCBA facing downward) Pin 1 +5V Ground Pin 1 J1-DC Power Pin 12 68 Pin SCSI ID = 0 (default) PCBA SCSI I/O Connector SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5...

  • Page 46: Figure 7C. Barracuda 18Lp Family Drive Option Select Header

    Barracuda 18LP Product Manual, Rev. E Pin 1 Jumper Positions Force Single-Ended I/O Single-Ended or Low-Voltage Differential Delay Motor Start Enable Motor Start Write Protect Parity Disable Term. Power to SCSI Bus Jumper Plug (enlarged to show detail) Drive Front Jumper position names shown here are not marked on the PCBA.

  • Page 47: Function Description

    Barracuda 18LP Product Manual, Rev. E 8.1.1 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, depending on the voltage state of the I/O “DIFFSNS” line. Default is no jumper on. Spindle starts immediately after power up—Default setting.

  • Page 48: Figure 8. Air Flow (Suggested)

    Barracuda 18LP Product Manual, Rev. E Forced air flow may be required to keep temperatures at or below the specified case temperatures of Table 3, Column 2, in which case the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is created while providing air flow to the electronics and HDA.

  • Page 49: 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 51: Interface Requirements

    18LP. No attempt is made to describe all of the minute details of conditions and constraints that must be con- sidered by designers when designing a system in which this family of drives can properly operate. Seagate declares that the drives operate in accordance with the appropriate ANSI Standards referenced in various places herein, with exceptions as noted herein or in the Seagate SCSI Interface Product Manual, part num- ber 77738479.

  • Page 52: Scsi Interface Commands Supported

    Barracuda 18LP Product Manual, Rev. E SCSI interface commands supported Table 6 following lists the SCSI interface commands that are supported in the SCSI-2, and SCSI-3 modes of the drive. Barracuda 18LP Family drives can be changed back and forth between SCSI-1 and SCSI-2/SCSI-3 modes using the Change Definition Command.
  • Page 53 Barracuda 18LP Product Manual, Rev. E Table 6: Commands supported by Barracuda 18LP family drive (Continued) Command Supported by Command name code Barracuda 18LP Mode select (10) Capacity Programming Mode sense Y [2] Caching parameters page (08h) Control mode page (0Ah) Disconnect/reconnect (02h) (DTDC, DIMM not used) Error recovery page (01h) Format page (03h)
  • Page 54 Barracuda 18LP Product Manual, Rev. E Table 6: Commands supported by Barracuda 18LP family drive (Continued) Command Supported by Command name code Barracuda 18LP 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) (1Bh) Synchronize cache...

  • Page 55: Inquiry Vital Product Data

    Bytes 18 through 25 reflect model of drive. Shown here are hex values for Model ST39175LC. Other pos- sible values for the various models are listed below. ST39175LW 33 39 31 37 35 4C 57 20 ST318275LC 33 31 38 32 37 35 4C 43 ST318275LW 33 31 38 32 37 35 4C 57 Copyright Year - changes with actual year.
  • Page 56 Barracuda 18LP Product Manual, Rev. E Table 8: Vital product data pages Byte Page Supported Unit serial number page 80h Peripheral qualifier/peripheral device type — Page code number Reserved Page length 4-11 Product serial number Implemented operating definition page 81h Peripheral qualifier/peripheral device type —...

  • Page 57: Mode Sense Data

    Barracuda 18LP Product Manual, Rev. E Table 8: Vital product data pages (Continued) Byte Page Supported Jumper settings page C2h Peripheral qualifier/peripheral device type Page code number Reserved Page length Motor start, parity enable, SCSI ID, delayed motor start, motor start, write protect, parity enable Terminator enable 9.3.2...
  • Page 58 Barracuda 18LP Product Manual, Rev. E 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 = Default value.
  • Page 59 Barracuda 18LP Product Manual, Rev. E Table 9b: Mode sense data, ST318275 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 02 1E B3 90 00 00 02 00 Sense...

  • Page 60: Scsi Bus Conditions And Miscellaneous Features Supported

    Barracuda 18LP Product Manual, Rev. E 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 61 Barracuda 18LP Product Manual, Rev. E Supported Conditions or feature Power management, SCSI-3 Queue tagging (up to 64 Que tags supported) Read look ahead crossing cylinder boundaries Relative addressing—customer unique options Reporting actual retry count in Extended Sense bytes 15, 16 and 17. Reset condition RPS (rotational position seek/sort) S2 bit...

  • Page 62: 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, part number 77738479. This section describes the connectors, cables, signals, terminators and bus timing of the DC and SCSI I/O interface.

  • Page 63: Figure 9A. Model "Lw" Drive Physical Interface (68 Pin J1 Scsi I/O Connector)

    Barracuda 18LP Product Manual, Rev. E Power +12V +12V ret + 5V ret + 5V Pin 1 Pin 1 J1-DC Power PCBA J1-DC Power Pin 1P Pin 1 Pin 1 68 Pin SCSI I/O Connector Figure 9a. Model “LW” drive physical interface (68 pin J1 SCSI I/O connector) 80 Pin SCSI I/O and Power Connector...

  • Page 64: Scsi Interface Physical Description

    Barracuda 18LP Product Manual, Rev. E 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) and EPI standards as defined in American National Standard documents T10/ 1302D and X3T10/1143D, and operate compatibly at the interface with devices that only support earlier single- ended SCSI-2 and SCSI-3 standards.

  • Page 65: Scsi Interface Cable Requirements

    Barracuda 18LP Product Manual, Rev. E 9.6.3 SCSI interface cable requirements The characteristics of cables used to connect SCSI-3 parallel interface devices are discussed in detail in ANSI Standard T10/1302D and X3T10/1143D. 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 66 Barracuda 18LP Product Manual, Rev. E 9.6.4.2 Mating connectors for “LC” models 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 11b). 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 transmission design concepts.

  • Page 67: Figure 10. Scsi Daisy Chain Interface Cabling For "Lw" Model Drives

    Barracuda 18LP Product Manual, Rev. E 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 68: Figure 11A. Nonshielded 68 Pin Scsi Device Connector Used On "Lw" Models

    Barracuda 18LP Product Manual, Rev. E 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. x 45 chamfer Position 1 (8.00) (2.16) .315 .010...

  • Page 69: Figure 11B. Nonshielded 80 Pin Scsi "Sca-2" Connector, Used On "Lc" Models

    Barracuda 18LP Product Manual, Rev. E 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 70 Barracuda 18LP Product Manual, Rev. E Table 13a: “LW” models SE operation 68 conductor cable signal/pin assignments (Nonshielded connector)[11] Note. The minus sign next to the signal indicates asserted state is the low voltage of the two levels used for logic signals.
  • Page 71 Barracuda 18LP Product Manual, Rev. E Table 13b: “LW” models differential cable 68 conductor signal/pin assignments (Nonshielded connector) [11] Note. The minus sign next to the signal indicates asserted state is the low voltage of the two levels used for logic signals.
  • Page 72 Barracuda 18LP Product Manual, Rev. E [11] Table 13c: “LC” SE 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...
  • Page 73 Barracuda 18LP Product Manual, Rev. E [11] Table 13d: “LC” 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...
  • Page 74 Barracuda 18LP Product Manual, Rev. E Notes [ ] for Tables 13b and 13d. See Section 9.7.1 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 75: Electrical Description

    Barracuda 18LP Product Manual, Rev. E Electrical description “LC” models use the single connection attachment (SCA) connector. This 80-pin connector is designed to plug directly into a back panel or plane. No external cables are required. Active terminators on the back panel must be provided by the user.

  • Page 76: Figure 12. Lvd Output Signals

    Barracuda 18LP Product Manual, Rev. E LVD Differential Driver 1.55V –15ma Signal + = True / Logic 1 / Assertion .95V +15ma Signal – LVD Differential Driver .95V +15ma Signal + = False / Logic 0 / Negation 1.55V –15ma Signal –...

  • Page 77: Terminator Requirements

    Barracuda 18LP Product Manual, Rev. E Terminator requirements All single initiator/single target (non-daisy-chain) applications require that the Initiator and disc drive be termi- nated. Daisy-chain applications require that only the units at each end of the daisy-chain be terminated. All other peripherals on the chain must not be terminated (see Figure 10).

  • Page 78: Disc Drive Scsi Timing

    Barracuda 18LP Product Manual, Rev. E 9.10 Disc drive SCSI timing Table 14: Disc drive SCSI timing These values are not current Barracuda 18LP values, but are listed for information only. Waveform Waveform Description symbol [1] table [1] Typical timing Target Select Time (no Arbitration) <1.4 s Target Select Time (with Arbitration)
  • Page 79 Barracuda 18LP Product Manual, Rev. E Table 14: Disc drive SCSI timing These values are not current Barracuda 18LP 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 81: 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; Server Appliance: 1-800-732-4283.

  • Page 82: Technical Support

    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 83 Barracuda 18LP Product Manual, Rev. E 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 85: Appendix A. Sense Keys And Additional Sense Codes Supported

    Barracuda 18LP Product Manual, Rev. E Appendix A. Sense keys and additional sense codes supported Sense Description Supported No sense Recovered error Not ready Media error Hardware error Illegal request Unit attention Data protect Firmware error Aborted command Equal Volume overflow Miscompare Additional sense code and qualifier Bytes...
  • Page 86 Barracuda 18LP Product Manual, Rev. E Bytes Description Supported No address mark in ID field No address mark in data field Sector not found No record found Seek positioning error Mechanical positioning error Positioning error determined by reading media Data synchronization mark error Data recovered without ECC or retries Data recovered with retries Data recovered with positive head offset...
  • Page 87 Barracuda 18LP Product Manual, Rev. E Bytes Description Supported Transceiver mode changed to LVD Parameters changed by another initiator Mode select parameters changed by another initiator Log parameters changed Reservation Preempted Tagged commands cleared by another initiator Format command failed Defect locations not available Rounded parameter error Saved parameters not supported...
  • Page 89 Barracuda 18LP Product Manual, Rev. E Index buffer 11 buffer segment 11 buffer-full 11 Symbols buffer-full ratio 11 bulkhead connector 54 +5 and +12 volt supplies 19 bus device reset message 47 “G” list 31 bytes per sector 44 “P” list 31 bytes/surface 9 bytes/track 9 Numerics...
  • Page 90 Barracuda 18LP Product Manual, Rev. E constraints 13 drive option select header 36 daisy-chain 20 drive orientation 10 80 conductor 56 drive power 33 data area 20 drive primary defects list 31 data correction 13 drive SCSI timing 68 data transfer period 52 drive select header 52 data transfer protocol 7 drive spindle 37...
  • Page 91 Barracuda 18LP Product Manual, Rev. E field repair 14 interface cable length 57 firmware 47 interface data 10 flat ribbon cable 64 interface requirements 41 flaw reallocation 10 interface timing 13 format 44 Interface transfer rates 54 format command 9 interleave 7 format time 10 interleave factor 9...
  • Page 92 Barracuda 18LP Product Manual, Rev. E model number table 5 peak starting current 19 motor start command 10 PERF 15 motor start delay option 64 performance characteristics 9 motor start option 10 performance degradation 26 mounting configuration 29 peripheral I/O cable 20 mounting configuration dimensions 29 physical buffer space 11 mounting constraints 13...
  • Page 93 SCSI-3 Parallel Interface-2 (SPI-2) 54 recoverable seek error 14 SE 54 reference documents 4 SE drivers 15 regulation 19 Seagate support service 33 relative humidity 26 sector 11 reliability 7 sector size 7 reliability and service 14 sector transfer 10...
  • Page 94 Barracuda 18LP Product Manual, Rev. E supply voltage 19 support services 71 wall/bracket mounted connector 55 synchronous data transfer 52 warranty 7 synchronous data transfer operation 69 WCE 12 synchronous data transfer period 52 wet bulb temperature 24 synchronous transfer negotiation 15 WP jumper 37 synchronous transfer period 69 wrap-around 11...
  • Page 96 Seagate Technology, LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 77767526, Rev. E, Printed in USA...

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