Seagate Barracuda 180 Family Product Manual
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Seagate Barracuda 180 Family Product Manual

Seagate Barracuda 180 Family Product Manual

Barracuda 180 family
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Barracuda 180 Family:
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ST1181677LW/LWV/LC/LCV
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Product Manual, Volume 1
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Summary of Contents for Seagate Barracuda 180 Family

  • Page 1 ..........Barracuda 180 Family: .
  • Page 3 ..........Barracuda 180 Family: .
  • Page 4 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology LLC. Cheetah, 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 (Class A Release) 11/9/2000 L. Newman/J. Nowitzke 1/1, v thru viii, 1-74. Notice. Product Manual 100109939 is Volume 1 of a two volume document with the SCSI interface information in the SCSI Interface Product Manual, Volume 2, part number 75789509.

  • Page 7: Table Of Contents

    Barracuda 180 Product Manual, Rev. A Contents Scope ................1 Applicable standards and reference documentation.
  • Page 8 Seagate Technology support services........
  • Page 9 Figure 1. Barracuda 180 family drive (ST1181677LW shown) ....... . 1 Figure 2.

  • Page 11: Scope

    The SCSI Interface Product Manual (part number 75789509) describes general SCSI interface characteristics of this and other families of Seagate drives. From this point on in this product manual the reference to Barracuda 180 models is referred to as “the drive”...
  • Page 12 Barracuda 180 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 180 family complies with Seagate standards as noted in the appropriate sections of this Manual and the Seagate SCSI Interface Product Manual. The Barracuda 180 disc drive is a UL recognized component per UL1950, CSA certified to CSA C22.2 No.

  • Page 14: Reference Documents

    T10/1302D SPI-3 (SCSI Parallel Interface version 3) SFF-8046 Specification for 80-pin connector 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

    (volume 1), which defines the product perfor- mance characteristics of the Barracuda 180 family of drives, and the SCSI Interface Product Manual, which describes the general interface characteristics of this and other families of Seagate SCSI drives.

  • Page 16: Figure 2. Barracuda 180 Family Drive

    Barracuda 180 Product Manual, Rev. A Figure 2. Barracuda 180 family drive...

  • Page 17: Standard Features

    Barracuda 180 Product Manual, Rev. A Standard features The Barracuda 180 family has the following standard features: • Integrated Ultra160 SCSI controller • Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD) • 16 bit I/O data bus •...

  • Page 18: Unformatted And Formatted Capacities

    Barracuda 180 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 capacities: Formatted data block size 512 bytes/sector [1] Unformatted ST1181677...

  • Page 19: Performance Characteristics

    SCSI performance characteristics (visible to user) The values given in Section 4.2.1 apply to all models of the Barracuda 180 family unless otherwise specified. Refer to Section 9.10 and to the SCSI Interface Product Manual for additional timing details.

  • Page 20: Start/Stop Time

    Barracuda 180 Product Manual, Rev. A Sector Sizes: Default 512 byte user data blocks Variable 512 to 4,096 bytes per sector in even number of bytes per sector. If n (number of bytes per sector) is odd, then n-1 will be used. Read/write consecutive sectors on a track Flaw reallocation performance impact (for flaws reallocated at format time using Negligible...

  • Page 21: Caching Write Data

    Barracuda 180 Product Manual, Rev. A enabled, the buffer (still segmented with required number of segments) is still used, but only as circular buffer segments during disc medium read operations (disregarding Prefetch operation for the moment). That is, the drive does not check in the buffer segments for the requested read data, but goes directly to the medium to retrieve it.

  • Page 22: Prefetch Operation

    Barracuda 180 Product Manual, Rev. A Tables 7 show Mode default settings for the drives. 4.5.2 Prefetch operation If the Prefetch feature is enabled, data in contiguous logical blocks on the disc immediately beyond that which was requested by a Read command can be retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequent Read commands that request those logical blocks (this is true even if cache operation is disabled).

  • Page 23: Reliability Specifications

    Barracuda 180 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: Reliability And Service

    Barracuda 180 Product Manual, Rev. A unrecoverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculations. Refer to the SCSI Interface Product Manual for Request Sense information. Reliability and service You can enhance the reliability of Barracuda 180 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 Barracuda 180 disc drives support all four hot plugging cases. Provision should be made by the sys- tem 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

    Barracuda 180 Product Manual, Rev. A 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: Drive Self Test (Dst)

    DST. It is the responsibility of the host application to determine the “not ready” cause. While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.

  • Page 28: Product Warranty

    To invoke DST, submit the Send Diagnostic command with the appropriate Function Code (001b for the short test or 010b for the extended test) in bytes 1, bits 5, 6, and 7. Refer to the Seagate SCSI Interface Product Manual, Volume 2, part number 75789509 for additional information about invoking DST.
  • Page 29 Barracuda 180 Product Manual, Rev. A will be repaired or replaced, at 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. For more detailed warranty information refer to the Standard terms and conditions of Purchase for Seagate products.
  • Page 30 Barracuda 180 Product Manual, Rev. A...

  • Page 31: Physical/Electrical Specifications

    Barracuda 180 Product Manual, Rev. A Physical/electrical specifications This section provides information relating to the drive’s physical and electrical characteristics. 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

    All times and currents are typical. See Table 2 for maximum current requirements. +12 Volt Current during spindle start – Typical Amperes Peak AC Envelope Peak DC T0 T1 Seconds Figure 3. Typical Barracuda 180 family drive +12 V current profile...

  • Page 33: Figure 4. Typical Barracuda 180 Scsi Se Mode +5 V Current Profile

    Barracuda 180 Product Manual, Rev. A +5 Volt Current during spindle start (single ended) – Typical Amperes AC Component Nominal (average) DC curve T1 T2 Seconds Figure 4. Typical Barracuda 180 SCSI SE mode +5 V current profile +5 Volt Current during spindle start (LVD) – Typical Amperes AC Component Nominal (average) DC curve T3 T4...

  • Page 34: Power Dissipation

    Barracuda 180 Product Manual, Rev. A Power dissipation For drives using single-ended interface circuits, typical power dissipation under idle conditions is 9.95 watts (33.98 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 10.3 watts (35.18 BTUs per hour).

  • Page 35: Environmental Limits

    Non-operating –40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive. HDA Temp.

  • Page 36: Effective Altitude (Sea Level)

    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 37: Figure 9. Recommended Mounting

    Barracuda 180 Product Manual, Rev. A Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight shipment shall withstand a drop test from 48 inches (1,070 mm) against a concrete floor or equivalent.

  • Page 38: Air Cleanliness

    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 39: Mechanical Specifications

    Barracuda 180 Product Manual, Rev. A 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 10 and 11 for detailed mounting configuration dimensions.

  • Page 40: Figure 11. St1181677Lc/Lcv Mounting Configuration Dimensions

    Barracuda 180 Product Manual, Rev. A Notes: -Z- -X- Mounting holes are 6-32 UNC 2B, three 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 41: Defect And Error Management

    Barracuda 180 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 42: Scsi Systems Errors

    Barracuda 180 Product Manual, Rev. A Table 3: 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) 58.03 24.18 74.61 36.27 373.05...

  • Page 43: 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 jumper plugs is shipped with the standard OEM drives.

  • Page 44: Figure 12. J6 Jumper Header

    Barracuda 180 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 45: Figure 13. J5 Jumper Header (On Lw/Lwv Models Only)

    Barracuda 180 Product Manual, Rev. A 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 46: Notes For Figures 12, 13, And 14

    Barracuda 180 Product Manual, Rev. A 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/LWV” models only; Term. Power to SCSI Bus functions in section 8.1.2.

  • Page 47: Function Description

    Barracuda 180 Product Manual, Rev. A 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 48: Drive Orientation

    Barracuda 180 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 49: 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 50 Barracuda 180 Product Manual, Rev. A...

  • Page 51: Interface Requirements

    Seagate SCSI Interface Product Manual, part number 75789509. SCSI interface messages supported Table 4 lists the messages supported by the SCSI-2 and SCSI-3 modes of the Barracuda 180 family drives. Table 4: SCSI messages supported by Barracuda 180 family drives...

  • Page 52: Scsi Interface Commands Supported

    SCSI interface commands supported Table 5 following lists the SCSI interface commands that are supported by the drive. OEM standard drives are shipped set to operate in Ultra160 mode. Table 5: Commands supported by Barracuda 180 family drive Command Supported by Command name...
  • Page 53 Barracuda 180 Product Manual, Rev. A Table 5: Commands supported by Barracuda 180 family drive (Continued) Command Supported by Command name code SCSI-2/3 Control mode page (0Ah) Disconnect/reconnect (02h) Error recovery page (01h) Format page (03h) Information exceptions control page (1Ch)
  • Page 54 Barracuda 180 Product Manual, Rev. A Table 5: Commands supported by Barracuda 180 family drive (Continued) Command Supported by Command name code SCSI-2/3 Supported diagnostics pages (00h) Translate page (40h) Set limits Start unit/stop unit (spindle ceases rotating) (1Ch) Synchronize cache...

  • Page 55: Inquiry Vital Product Data

    Barracuda 180 Product Manual, Rev. A Table 6 lists the Standard Inquiry command data that the drive should return to the initiator per the format given in the SCSI Interface Product Manual. Table 6: Barracuda 180 family drive Standard Inquiry data Bytes Data (HEX) 0-15...

  • Page 56: Mode Sense Data

    Barracuda 180 Product Manual, Rev. A 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 57 Barracuda 180 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 for SCSI Ultra160 implementation (see the SCSI Interface Product Manual). Definitions: = Default value.

  • Page 58: Scsi Bus Conditions And Miscellaneous Features Supported

    Barracuda 180 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 59: Synchronous Data Transfer

    This transfer rate is only allowed when using the LVD interface. 9.5.2 REQ/ACK offset Barracuda 180 family drives support REQ/ACK offset values from 7 to 63 (3Fh). Offsets 1 through 6 are nego- tiated to 0 (asynchronous transfer). Physical interface This section describes the connectors, cables, signals, terminators and bus timing of the DC and SCSI I/O interface.

  • Page 60: Figure 16. St1181677Lw/Lwv Drive Physical Interface (68-Pin J1 Scsi I/O Connector)

    Barracuda 180 Product Manual, Rev. A 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 16. ST1181677LW/LWV drive physical interface (68-pin J1 SCSI I/O connector) 80-pin SCSI I/O Connector...

  • Page 61: Scsi Interface Physical Description

    Barracuda 180 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 Ultra160 SCSI Parallel Interface-3 (SPI-3) standards as defined in American National Standard document T10/1302D, and operate compatibly at the interface with devices that support earlier SCSI-2 and SCSI-3 standards.

  • Page 62: Mating Connectors

    Barracuda 180 Product Manual, Rev. A To minimize discontinuances and signal reflections, cables of different impedances should not be used in the same bus. Implementations may require trade-offs in shielding effectiveness, cable length, number of loads and spacing, transfer rates, and cost to achieve satisfactory system operation. If shielded and unshielded cables are mixed within the same SCSI bus, the effect of impedance mismatch must be carefully considered.

  • Page 63: Figure 18. Scsi Daisy Chain Interface Cabling For Lw/Lwv Drives

    Barracuda 180 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 64: Figure 19. Nonshielded 68 Pin Scsi Device Connector Used On Lw/Lwv Drives

    Barracuda 180 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 .315 .085 (2.54) (46.13) Pos. Position 1 x 45 chamfer (8.00) (2.16) .315 .010...

  • Page 65: Figure 20. Nonshielded 80 Pin Scsi "Sca-2" Connector, Used On Lc/Lcv Drives

    Barracuda 180 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 66 Barracuda 180 Product Manual, Rev. A Table 12: LW/LWV 68-conductor single-ended (SE) P cable signal/pin assignments [13] Note. A minus sign preceding a signal name indicates that signal is active low. Connector Connector Signal contact contact Signal name [1] number [3] number [3] name [1] –DB12...
  • Page 67 Barracuda 180 Product Manual, Rev. A Table 13: LW/LWV 68-conductor LVD P cable signal/pin assignments [13] Note. A minus sign preceding a signal name indicates that signal is active low. Connector Connector Signal contact contact Signal name [1] number [3] number [3] name [1] +DB12...
  • Page 68 Barracuda 180 Product Manual, Rev. A Table 14: LC/LCV 80-pin single-ended (SE) I/O connector pin assignments [13] 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 69 Barracuda 180 Product Manual, Rev. A Table 15: LC/LCV 80-pin single-ended (LVD) I/O connector pin assignments [13] 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 70: Electrical Description

    Barracuda 180 Product Manual, Rev. A Notes [ ] for Tables 12 through 15. 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 71: Figure 21. Lvd Output Signals

    Barracuda 180 Product Manual, Rev. A 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 72: Terminator Requirements

    Barracuda 180 Product Manual, Rev. A 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 16 lists the maximum lengths allowed for different configurations of drive usage.

  • Page 73: Disc Drive Scsi Timing

    Barracuda 180 Product Manual, Rev. A 9.10 Disc drive SCSI timing Table 17: Disc drive SCSI timing Waveform Waveform Description symbol [1] table [1] Typical timing Target Select Time (no Arbitration) <1 s Target Select Time (with Arbitration) 4.5-1,2 1.93 s Target Select to Command 4.5-1 3.77 s...

  • Page 74: Drive Activity Led

    Barracuda 180 Product Manual, Rev. A Table 17: Disc drive SCSI timing (Continued) Waveform Waveform Description symbol [1] table [1] Typical timing Data In Byte Transfer (parameter) 4.5-12 0.04 s Data Out Byte Transfer (parameter) 4.5-13 0.04 s Next Data In Byte Access (parameter) 4.5-12 0.12 s Next Data Out Byte Access (parameter)

  • Page 75: Seagate Technology Support Services

    Seagate’s automated FAX delivery system. Using a touch-tone phone, you can obtain technical support information by return 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.

  • Page 76: 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 77 Barracuda 180 Product Manual, Rev. A 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 78 Barracuda 180 Product Manual, Rev. A...
  • Page 79 Barracuda 180 Product Manual, Rev. A Index bytes/surface 9 bytes/track 9 Symbols cabinet cooling 38 +5 and +12 volt supplies 21 cable 49 Numerics cache 10 cache buffer 7 68 conductor connector 52 cache miss 11 68-pin connector 53 cache mode 10 80 conductor connector 52 cache operation 10 80 conductor interface 52...
  • Page 80 Barracuda 180 Product Manual, Rev. A DC current 51 DC power 10 ECC 13 DC power carrying conductor 52 ECC correction capability 7 DC power connector 49 electrical characteristics 49 DC power requirements 21 electromagnetic compatibility 3 DC power source 52 electromagnetic interference (EMI) 13 dedicated landing zone 5 electromagnetic susceptibility 28...
  • Page 81 Barracuda 180 Product Manual, Rev. A head and disc assembly. See HDA LVD interface receiver circuits 61 heat removal 38 LVD output signals 61 heat source 38 high level format 33 host 12 magnetoresistive heads 5 host adapter 33 mating connector 49 adapter/initiator 53 mating flat cable connector 52 host backplane wiring 51...
  • Page 82 Barracuda 180 Product Manual, Rev. A prefetch field 12 prefetch hit 12 office environment 28 prefetch mode 10 operating 25 prefetch of contiguous blocks 12 operating environment 14 prefetch operation 10 operating option 33 prefetch segmented cache control 10 operating parameter 46 preventive maintenance 13 operator intervention 13 PRML read channel electronics 5...
  • Page 83 SCSI systems error consideration 31 SCSI systems error management 32 Taiwan certification 4 SCSI-1 mode 42 technical support services 65 SE 60 temperature 10 Seagate support service 33 ambient 25 sector 11 gradient 25 sector interleave 9 non-operating 25 sector size 8...
  • Page 84 Barracuda 180 Product Manual, Rev. A write operation 11 write protect 37 write retry count 31 zoned bit recording (ZBR) 7...
  • Page 86 Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100109939, Rev. A, Printed in USA...

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