Seagate ST318436LW Product Manual

Seagate ST318436LW Product Manual

Barracuda 18xl family
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Barracuda 18XL Family:
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ST318436LW/LC/LWV/LCV
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ST318426LW/LC, ST318416N/W
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ST39236LW/LC/LWV/LCV
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ST39226LW/LC, ST39216N/W
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Product Manual, Volume 1
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Summary of Contents for Seagate ST318436LW

  • Page 1 ..........ST318436LW/LC/LWV/LCV .
  • Page 3 ..........ST318436LW/LC/LWV/LCV .
  • Page 4 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology, Inc. Barracuda, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either trademarks or registered trademarks of Seagate Technology, Inc. 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 01/18/2000 D. Ashby/B. Reynolds 1/1, v thru viii, 1-98. Notice. Product Manual 77767535 is Volume 1 of a two volume document with the SCSI Interface information in the Volume 2 SCSI Interface Product Manual, part number 75789509. If the SCSI Interface information is needed the Volume 2 Interface Manual should be ordered, part number 75789509.
  • Page 7: Table Of Contents

    Barracuda 18XL Product Manual, Rev. A Table of Contents Scope ................1 Applicable standards and reference documentation.
  • Page 8 Seagate Technology support services........
  • Page 9 Barracuda 18XL Product Manual, Rev. A List of Figures Figure 1. Barracuda 18XL family drive (model “LC” version with 80-pin SCSI I/O connector shown). . . 1 Figure 2. Barracuda 18XL family drive ..........6 Figure 3a.
  • Page 11: Scope

    SCSI-2, and SCSI-3 (Fast-20, Fast-40, and Fast-80) interface specifications to the extent described in this manual.* Ultra, Ultra2, and Ultra160 are the names Seagate calls these interfaces. The SCSI Interface Product Manual (part number 75789509) describes general SCSI interface characteristics of this and other families of Seagate drives.
  • Page 12 Barracuda 18XL Product Manual, Rev. A...
  • Page 13: Applicable Standards And Reference Documentation

    Mounting by bottom holes must meet the requirements of Section 8.4. Standards The Barracuda 18XL family complies with Seagate standards as noted in the appropriate sections of this Man- ual and the Seagate SCSI Interface Product Manual, part number 75789509 (Vol. 2).
  • Page 14: Reference Documents

    SAM-2 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

    (volume 1), which defines the product performance characteristics of the Barracuda 18XL family of drives, and the SCSI Interface Product Manual (volume 2), part number 75789509, which describes the general interface characteristics of this and other families of Seagate SCSI drives.
  • Page 16: Figure 2. Barracuda 18Xl Family Drive

    Barracuda 18XL Product Manual, Rev. A The head and disc assembly (HDA) is sealed at the factory. Air circulates within the HDA through a non- replaceable filter to maintain a contamination-free HDA environment. Refer to Figure 2 for an exploded view of the drive. This exploded view is for information only—never disassem- ble the HDA and do not attempt to service items in the sealed enclosure (heads, media, actuator, etc.) as this requires special facilities.
  • Page 17: Standard Features

    Barracuda 18XL Product Manual, Rev. A Standard features The Barracuda 18XL 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 18XL Product Manual, Rev. A 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 18XL Product Manual, Rev. A Performance characteristics Internal drive characteristics (transparent to user) ST318436 ST318426 ST318416 ST39236 ST39226 ST39216 Drive capacity 18.373 18.373 18.373 9.186 9.186 9.186 Gbyte (formatted, rounded off values) Read/write heads Bytes/track Kbytes (average, rounded off values) Bytes/surface 3,642 3,642...
  • Page 20 Barracuda 18XL Product Manual, Rev. A Data buffer transfer rate to/from disc media: (< 1 track): 18.373 GB models 9.186 GB models Min. 18.5 18.5 MByte/sec Avg. [4] 23.9 23.9 MByte/sec Max. [4] 29.4 29.4 MByte/sec SCSI interface data transfer rate (asynchronous, 15 bit SCSI bus) [5]: Maximum instantaneous 5 Mbytes/sec [6] Maximum average...
  • Page 21: Start/Stop Time

    Barracuda 18XL Product Manual, Rev. A Start/stop time After DC power at nominal voltage has been applied, the drive typically becomes ready for media access com- mands within 15 seconds if the Motor Start Option is disabled (i.e. the motor starts as soon as the power has been applied).
  • Page 22: Caching Write Data

    Barracuda 18XL Product Manual, Rev. A Each buffer segment is actually a self-contained circular storage (wrap-around occurs), the length of which is an integer number of disc medium sectors. The wrap-around capability of the individual segments greatly enhances the buffer’s overall performance as a cache storage, allowing a wide range of user selectable config- urations, which includes their use in the prefetch operation (if enabled), even when cache operation is disabled (see Section 4.5.2).
  • Page 23: Reliability Specifications

    Barracuda 18XL Product Manual, Rev. A 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 18XL Product Manual, Rev. A 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 18Xl 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: Drive Self Test (Dst)

    DST validates the functionality of the drive at a system level. If DST encounters an error, it reports a fault condition. If the drive fails the test, remove it from service and return it to Seagate for service.
  • Page 27 State of the drive prior to testing The host is responsible for spinning the drive before issuing the Send Diagnostic command. While not techni- cally part of DST, a persistent Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.
  • Page 28 The extended test retains a correlation rate of at least 90% with drives tested and classified in the factory. The test reports as “good” at least 90% of the drive judged “good” by Seagate tests and reports as “bad” at least...
  • Page 29: Product Warranty

    Seagate’s option and at no charge to customer, if returned by customer at cus- tomer’s expense to Seagate’s designated facility in accordance with Seagate’s Warranty Procedure. Seagate will pay for transporting the repair or replacement item to customer.
  • Page 30 Barracuda 18XL Product Manual, Rev. A...
  • Page 31: Physical/Electrical Specifications

    Barracuda 18XL Product Manual, Rev. A Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Barracuda 18XL drive. AC power requirements None. DC power requirements The voltage and current requirements for a single drive are shown in the following table. Values indicated apply at the drive power connector.
  • Page 32: Conducted Noise Immunity

    Barracuda 18XL Product Manual, Rev. A See Section 6.2.1 “Conducted Noise Immunity.” Specified voltage tolerance is inclusive of ripple, noise, and transient response. Operating condition is defined as random 8 block reads at 162 I/Os per second. Current and power speci- fied at nominal voltages.
  • Page 33: Current Profile

    Barracuda 18XL Product Manual, Rev. A 6.2.3 Current profile Figures 3a and 3b identify the drive +5 V and +12 V current profile. The current during the various times is as shown: Power is applied to the drive. T1 - Controller self tests are performed.
  • Page 34: Figure 3B. Typical Barracuda 18Xl Family Drive +5 V Current Profile

    Barracuda 18XL Product Manual, Rev. A +5 Volt Current, SCSI SE, during spindle start – Typical Amperes Seconds Figure 3b. Typical Barracuda 18XL family drive +5 V current profile...
  • Page 35: Power Dissipation

    Barracuda 18XL Product Manual, Rev. A 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 36: Environmental Limits

    Temperatures measured under 22.5°C ambient conditions. 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 37: Figure 4. Locations Of Pcba Components Listed In Table 3

    Barracuda 18XL Product Manual, Rev. A Model “LC” PCBA [1] HDA Temp. Check Point PCBA 3 Model “N” PCBA [1] Model “W/LW” PCBA [1] PCBA 1 PCBA 2 [1]Bottom side of PCBA Figure 4. Locations of PCBA components listed in Table 3...
  • Page 38: Relative Humidity

    Barracuda 18XL Product Manual, Rev. A 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 39: 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 40: 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 3.5 (mean) bels typical when measured to Seagate’s 30553-001 spec- ification. 6.4.7 Electromagnetic susceptibility...
  • Page 41: Mechanical Specifications

    Barracuda 18XL Product Manual, Rev. A 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 42: Figure 6B. Mounting Configuration Dimensions For "Lc" And "Lcv" Model

    Barracuda 18XL Product Manual, Rev. A [10] 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 43: Figure 6C. Mounting Configuration Dimensions For "N" Models

    Barracuda 18XL Product Manual, Rev. A 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). Mounting holes four on bottom, 6-32 UNC.
  • Page 44 Barracuda 18XL Product Manual, Rev. A...
  • Page 45: Defect And Error Management

    Barracuda 18XL Product Manual, Rev. A 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

    Barracuda 18XL Product Manual, Rev. A 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) 108.73 92.0 125.46 117.1 426.56 125.46...
  • Page 47: 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 48: Figure 7A. Barracuda 18Xl Family Drive Id Select (W/Lw/Lc/Lwv/Lcv Models)

    Barracuda 18XL Product Manual, Rev. A 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 7B. Barracuda 18Xl Family Drive Id Select Header J6 For N Model (J6 Pins 1-12)

    Barracuda 18XL Product Manual, Rev. A 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 50: Figure 7C. Barracuda 18Xl Family Drive Id Select Header J5 For W/Lw/Lwv Models (J5 Pins 1-12)

    Barracuda 18XL Product Manual, Rev. A 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 51: Figure 7D. Barracuda 18Xl Family Drive Option Select Header (For Lw/Lc/Lwv/Lcv Models)

    Barracuda 18XL Product Manual, Rev. A 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 Jumper Plug (enlarged to show detail) Drive Front Jumper position names shown here are not marked on the PCBA. They are shown here for reference only. Additional information on these functions is in Section 8.1.1.
  • Page 52: Function Description

    Barracuda 18XL Product Manual, Rev. A 8.1.1 Function description jumper installation Jumper function description TE (Applies only to “N” and “W” models) With the jumper installed, the onboard (non-removable) terminator circuits are enabled (con- nected to the I/O lines). Default is jumper installed. Terminator circuits not enabled (not connected to I/O lines).
  • Page 53: Drive Orientation

    Barracuda 18XL Product Manual, Rev. A 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 54: 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 55: Interface Requirements

    18XL. 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 75789509.
  • Page 56: Scsi Interface Commands Supported

    Barracuda 18XL Product Manual, Rev. A 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 18XL Family drives can be changed back and forth between SCSI-1 and SCSI-2/SCSI-3 modes using the Change Definition Command.
  • Page 57 Barracuda 18XL Product Manual, Rev. A Table 6: Commands supported by Barracuda 18XL family drive (Continued) Command Supported by Command name code Barracuda 18XL 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 58 Barracuda 18XL Product Manual, Rev. A Table 6: Commands supported by Barracuda 18XL family drive (Continued) Command Supported by Command name code Barracuda 18XL Search data high Search data low Seek Seek extended Send diagnostics Supported diagnostics pages (00h) Translate page (40h) DST (logical unit self-test diagnostics) Set limits Start unit/stop unit (spindle ceases rotating) (1Bh)
  • Page 59 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 ST318436LW. The hex values for bytes 18 through 26 for the various models are listed below.
  • Page 60: Inquiry Vital Product Data

    Barracuda 18XL Product Manual, Rev. A 9.3.1 Inquiry Vital Product data Instead of the standard Inquiry data shown in Table 7, the initiator can request several Vital Product Data pages by setting the Inquiry command EVPD bit to one. The SCSI Interface Product Manual, part number 75789509, lists the Vital Product Data pages and describes their formats.
  • Page 61: Mode Sense Data

    Barracuda 18XL Product Manual, Rev. A 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 SCSI ID, delayed motor start, motor start, write protect, parity enable Terminator enable “N”...
  • Page 62 Barracuda 18XL Product Manual, Rev. A The following tables list the values of the data bytes returned by the drive in response to the Mode Sense com- mand pages (see the SCSI Interface Product Manual, P/N 75789509). Definitions: = Saved value = Default value.
  • Page 63 Barracuda 18XL Product Manual, Rev. A Table 9b: Mode sense data, ST318426 values 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 23 90 70 00 00 20 00 Sense Data Mode...
  • Page 64 Barracuda 18XL Product Manual, Rev. A Table 9c: Mode sense data, ST318416 values 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 23 90 70 00 00 02 00 Sense Data Mode...
  • Page 65 Barracuda 18XL Product Manual, Rev. A Table 9d: Mode sense data, ST39236 values 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 11 C8 38 00 00 02 00 Sense Data Mode...
  • Page 66 Barracuda 18XL Product Manual, Rev. A Table 9e: Mode sense data, ST39226 values 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 11 C8 38 00 00 02 00 Sense Data Mode...
  • Page 67 Barracuda 18XL Product Manual, Rev. A Table 9f: Mode sense data, ST39216 values 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 11 C8 38 00 00 02 00 Sense Data Mode...
  • Page 68 Barracuda 18XL Product Manual, Rev. A 9.3.2.1 Notes for tables 9a through 9f Though byte 12, bit 7 (A0) is shown as changeable, the FSW function governed by that bit is not imple- mented by this drive. Page 0, Byte 2, Bit 7 is defined as the Performance Mode (PM) bit. When set to zero (Server mode), the SCSI firmware is performance optimized for server applications.
  • Page 69: Scsi Bus Conditions And Miscellaneous Features Supported

    Barracuda 18XL Product Manual, Rev. A 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 70 Barracuda 18XL Product Manual, Rev. A Supported Conditions or feature 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 SCA-2 SCA connector (optional) SCSI ID accessibility to front end (J6)
  • Page 71: 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 75789509. This section describes the connectors, cables, signals, terminators and bus timing of the DC and SCSI I/O interface.
  • Page 72: Figure 9A. Model "Lw" And "Lwv" Drive Physical Interface (68 Pin J1 Scsi I/O Connector)

    Barracuda 18XL Product Manual, Rev. A 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” and “LWV” drive physical interface (68 pin J1 SCSI I/O connector) 80 Pin SCSI I/O and Power Connector...
  • Page 73: Figure 9C. Models "N" And "W" Drive Physical Interface

    Barracuda 18XL Product Manual, Rev. A Power +12V +12V ret + 5V ret + 5V 3P 2P DC Power Connector Pin 1 Pin 1 SCSI I/O Connector Figure 9c. Models “N” and “W” drive physical interface...
  • Page 74: Scsi Interface Physical Description

    Barracuda 18XL Product Manual, Rev. A 9.6.2 SCSI interface physical description The drive models described by this product manual support the physical interface requirements of the SCSI Parallel Interface-2 (SPI-3) 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 75: Scsi Interface Cable Requirements

    Barracuda 18XL Product Manual, Rev. A 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 (SPI-3) and X3T10/1143D. The cable characteristics that must be considered when inter- connecting the drives described in this manual in a SCSI-3 parallel, daisy-chain interconnected system are: •...
  • Page 76 Barracuda 18XL Product Manual, Rev. A 9.6.4.2 Mating connectors for “LC” and “LCV” 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 77: Figure 10A. Scsi Daisy Chain Interface Cabling For "Lw" Model Drives

    Barracuda 18XL Product Manual, Rev. A 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 78: Figure 10B. Scsi Daisy-Chain Interface Cabling For "N" And "W" Model Drives

    Barracuda 18XL Product Manual, Rev. A “N” Model “W” Model Drive Drive 2 through X SCSI devices [4] Pin 1 (check your adapter for Pin 1 location) SCSI ID 1 SCSI ID 7 [5] Host Adapter SCSI ID 0 Closed-end type 58-pin connector used. Terminators on the PCB enabled. Open end type (in-line application) connector used.
  • Page 79: Figure 11A. Nonshielded 68-Pin Scsi Device Connector Used On "Lw" Models

    Barracuda 18XL Product Manual, Rev. A 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 .010...
  • Page 80: Figure 11B. Nonshielded 80 Pin Scsi "Sca-2" Connector, Used On "Lc" Models

    Barracuda 18XL Product Manual, Rev. A 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 81: Figure 11C. Nonshielded 50-Pin Connector For "N" And "W" Models

    Barracuda 18XL Product Manual, Rev. A 15.24 77.60 7.62 10.03 2.54 5.08 1.45 0.05 6.35 9.27 12.80 R 0.51 Typ. 13.89 14.86 (2X) 2.03 0.25 (3X) R 0.73 0.50 Typ. 1.27 Typ. 1.27 (4X) 17.65 62.23 Ref. 24.13 97.40 1.52 93.72 Ref.
  • Page 82 Barracuda 18XL Product Manual, Rev. A 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 83 Barracuda 18XL Product Manual, Rev. A 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 84 Barracuda 18XL Product Manual, Rev. A Table 13c: “LC” SE models, 80 pin I/O connector pin assignments (nonshielded connector) [11] 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 85 Barracuda 18XL Product Manual, Rev. A Table 13d: “LC” differential models, 80 pin I/O connector pin assignments (nonshielded connector) [11] 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 86 Barracuda 18XL Product Manual, Rev. A Table 13e: “N” model, single-ended I/O, 50 conductor, signal/contact assignments Connector Cable Connector Signal contact conductor contact Signal name [1] number [13] number [12] number [13] name [1] –DB0 –DB1 –DB2 –DB3 –DB4 –DB5 –DB6 –DB7 –DBP...
  • Page 87 Barracuda 18XL Product Manual, Rev. A Table 13f: “W” model, 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...
  • Page 88 Barracuda 18XL Product Manual, Rev. A Notes [ ] for Tables 13a and 13f. See Section 9.7.1 or 9.7.2 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 89: Electrical Description

    Barracuda 18XL Product Manual, Rev. A 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 90: Multimode-Se Or Lvd Alternative

    Barracuda 18XL Product Manual, Rev. A See ANSI Standard T10/1302D (SPI-3) for detailed electrical specifications. 9.7.2 Multimode—SE or LVD alternative “LW” and “LC” models have I/O circuits that can operate either in single-ended (SE) or low voltage differential mode (LVD). When the interface “DIFFSNS” line is between 0 V and .6 V, the drive interface circuits operate single-ended and up to and including 20 M transfers/s (Fast-20 or Ultra-1 SCSI).
  • Page 91: Figure 13. Lvd Steady-State Output Voltage Test Circuit (T10/1302D, Annex A, Figure 1)

    Barracuda 18XL Product Manual, Rev. A –SIGNAL STEADY STATE LOGIC INPUT (1 OR 0) +SIGNAL MEASURED PARAMETER DEVICE CONNECTOR Note. Resistors are ± 0.1% Figure 13. LVD steady-state output voltage test circuit (T10/1302D, Annex A, Figure 1) Input characteristics Each signal (Vs) received by LVD interface receiver circuits shall have the following input characteristics when measured at the disk drive connector: Steady state Low level output voltage* = 0.030 V = <...
  • Page 92: Terminator Requirements

    Barracuda 18XL Product Manual, Rev. A Terminator requirements “N” and “W” models have active, permanently mounted LSI terminator circuits on board the PCB. 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 10a).
  • Page 93: Disc Drive Scsi Timing

    Barracuda 18XL Product Manual, Rev. A SCSI devices providing terminator power (TERMPWR) must have the following characteristics: 8-bit SCSI V TERM = 4.25 V to 5.25 V 800 mA minimum source drive capability 1.0 A maximum 16-bit SCSI V TERM = 4.25 V to 5.25 V 1,500 mA minimum source drive capability 3.0 A maximum 9.10...
  • Page 94 Barracuda 18XL Product Manual, Rev. A Table 15: Disc drive SCSI timing These values are not current Barracuda 18XL values, but are listed for information only. Waveform Waveform Description symbol [1] table [1] Typical timing Next CDB Byte Access (Byte 4 of 10) T23.10.4 4.5-4 0.12 s ±1 s...
  • Page 95: Seagate Technology Support Services

    FAX 24 hours daily. This service is available worldwide. 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.
  • Page 96 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 97 Barracuda 18XL Product Manual, Rev. A 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. to 5:00 p.m. (European central time) Monday through Friday, or send a FAX to +31-20-653-3513.
  • Page 98 Barracuda 18XL Product Manual, Rev. A...
  • Page 99 Barracuda 18XL Product Manual, Rev. A 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 100 Barracuda 18XL Product Manual, Rev. A Bytes Description Supported Error too long to correct Unrecoverable read error, autoreallocation failed 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...
  • Page 101 Barracuda 18XL Product Manual, Rev. A Bytes Description Supported Power-on or pin 40 bus reset occurred Power-on occurred SCSI bus reset occurred Bus Device Reset function occurred Device internal reset occurred Transceiver mode changed to single-ended Transceiver mode changed to LVD Parameters changed by another initiator Mode select parameters changed by another initiator Log parameters changed...
  • Page 102 Barracuda 18XL Product Manual, Rev. A...
  • Page 103 Barracuda 18XL Product Manual, Rev. A Index backward compatibility 5 bits/inch 9 buffer 11 Symbols buffer segment 11 buffer-full 11 +5 and +12 volt supplies 22 buffer-full ratio 11 “G” list 35 bulkhead connector 64 “P” list 35 bus device reset message 51 bytes per sector 48 Numerics bytes/surface 9...
  • Page 104 Barracuda 18XL Product Manual, Rev. A current value 51 drive internal 23 cylinder boundary 12 drive internal defects and errors 35 drive malfunction 14 drive mounting 31 constraints 13 daisy-chain 22 drive option select header 41 80 conductor 66 drive orientation 10 data area 23 drive power 37 data correction 13...
  • Page 105 Barracuda 18XL Product Manual, Rev. A Fast-80 SCSI 5 inquiry command 49 Fast-80 transfer rate 64 inquiry vital product data 50 fault status 13 installation 37 FCC rules and regulations 3 installation guide 4 field repair 14 installation instructions 37 firmware 51 instantaneous current peak 21 flat ribbon cable 78...
  • Page 106 Barracuda 18XL Product Manual, Rev. A mode page 01 51 package test specification 4 mode page 08h 11 packaged 29 mode parameter 51 parity 42 page 08h 12 parity checking 42 mode select command 11 parity error 42 mode select page 08h 12 partition or logical drive 37 mode sense command 51 PCBA 14...
  • Page 107 SCSI-3 Parallel Interface-2 (SPI-2) 64 recommended mounting 29 SE 64 recording code 9 SE drivers 15 recoverable seek error 14 Seagate support service 37 reference documents 4 sector 12 regulation 21 sector size 7 relative humidity 28 sector transfer 10...
  • Page 108 Barracuda 18XL Product Manual, Rev. A status byte 10 STIR algorithm 7 Ultra SCSI 5 stop spindle 11 unformatted 8 Stop Spindle command 15 unrecoverable condition 13 stop time 11 unrecoverable error 13 storage capacity 35 unrecoverable seek error 14 straight-in connector 67 Unrecoverable write error 13 strict bit in Mode page 00h 12...
  • Page 110 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 77767535, Rev. A, Printed in USA...

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