................................................. Barracuda 36 Family: ................................................. ST136475LW/LC ................................................. ................................................. Product Manual, Volume 1 .................................................
................................................. Barracuda 36 Family: ................................................. ST136475LW/LC ................................................. ................................................. Product Manual, Volume 1 .................................................
© 1997-2000 Seagate Technology, LLC All rights reserved Publication number: 77767528, Rev. C August 2000 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 property of their respective owners.
Revision status summary sheet Revision Date Writer/Engineer Sheets Affected Rev. A Rev. B Rev. C 04/20/99 09/02/99 08/22/2000 D. Ashby/P. Kusbel D. Ashby/P. Kusbel K. Schweiss/B. Reynolds 1/1, v thru viii, 1-82 25 ii, 1, 36, 42, 69-71, and backcover Notice. Product Manual 77767528 is Volume 1 of a two volume document with the SCSI Interface information in the Volume 2 SCSI Interface Product Manual, part number 77738479.
Barracuda 36 Product Manual, Rev. C vii Table of Contents 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Applicable standards and reference documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1.
viii Barracuda 36 Product Manual, Rev. C 6.5 6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 6.4.5 Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 6.4.6 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Barracuda 36 Product Manual, Rev. C ix List of Figures Figure 1. Figure 2. Figure 3a. Figure 3b. Figure 3c. Figure 3d. Figure 4. Figure 5. Figure 6a. Figure 6b. Figure 7a. Figure 7b. Figure 7c. Figure 8. Figure 9a. Figure 9b. Figure 10. Figure 11a. Figure 11b. Figure 12. Figure 13. Barracuda 36 family drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Barracuda 36 family drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Barracuda 36 Product Manual, Rev. C 1.0 1 Scope This manual describes the Seagate Technology®, LLC, Barracuda 36™ disc drives. Barracuda 36 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.
Barracuda 36 Product Manual, Rev. C 2.0 3 Applicable standards and reference documentation The drive has been developed as a system peripheral to the highest standards of design and construction. The drive depends upon its host equipment to provide adequate power and environment in order to achieve optimum performance and compliance with applicable industry and governmental regulations.
4 Barracuda 36 Product Manual, Rev. C Australian C-Tick If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZS3548 1995 and meets the Electromagnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Management Agency (SMA). 2.3 Reference documents Barracuda 36 Installation Guide Seagate P/N 77767529 SCSI Interface Product Manual Seagate P/N 77738479 ANSI small computer system interface (SCSI) document numbers: X3.
Barracuda 36 Product Manual, Rev. C 3.0 5 General description Barracuda 36 drives combine magnetoresistive (MR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a SCSI-3 (Fast-20 and Fast-40) interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.
6 Figure 2. Barracuda 36 Product Manual, Rev.
Barracuda 36 Product Manual, Rev. C 3.
8 Barracuda 36 Product Manual, Rev. C 3.5 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. Formatted capacity data block size 512 bytes/sector [1] ST136475 43D671Fh (36 GB) [2] Notes. [1] [2] 3.6 Sector size selectable at format time.
Barracuda 36 Product Manual, Rev. C 9 4.0 Performance characteristics 4.1 Internal drive characteristics (transparent to user) ST136475 Drive capacity Read/write heads Bytes/track Bytes/surface Tracks/surface (total) Tracks/inch Peak bits/inch Internal data rate Disc rotational speed Average rotational latency Recording code 4.2 36.4 20 186 2184 11,721 12,580 223 137-240 7,200 4.
10 Barracuda 36 Product Manual, Rev. C SCSI interface data transfer rate (asynchronous) [5]: Maximum instantaneous Maximum average 3.5 Mbytes/sec [6] 3.
Barracuda 36 Product Manual, Rev. C 4.4 11 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” operations.
12 4.5.1 Barracuda 36 Product Manual, Rev. C 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 available for future read cache hits. The same buffer space and segmentation is used as set up for read functions.
Barracuda 36 Product Manual, Rev. C 5.0 13 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).
14 5.1.4 Barracuda 36 Product Manual, Rev. C 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 108 physical seek operations. After detecting an initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (15h) is reported with a Medium error (3h) or Hardware error (4h) reported in the Sense Key.
Barracuda 36 Product Manual, Rev. C 5.2.6 15 Hot plugging Barracuda 36 disc drives The ANSI SPI-2 (T10/1142D) document defines the physical requirements for removal and insertion of SCSI devices on the SCSI bus. Four cases are addressed. The cases are differentiated by the state of the SCSI bus when the removal or insertion occurs.
16 Barracuda 36 Product Manual, Rev. C The drive can be interrogated by the host to determine the time remaining before the next scheduled measurement and data logging process will occur. This is accomplished by a log sense command to log page 0x3E. The purpose is to allow the customer to control when S.M.A.R.T. interruptions occur. As described above, forcing S.M.A.R.T by the RTZ command will reset the timer. Performance impact S.M.A.R.T.
Barracuda 36 Product Manual, Rev. C 17 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 container voids the drive warranty. Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in transit. Contact your Authorized Seagate Distributor to purchase additional boxes.
Barracuda 36 Product Manual, Rev. C 6.0 19 Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Barracuda 36 drive. 6.1 AC power requirements None. 6.2 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. The single ended power requirements includes the internal disc drive SCSI I/O termination.
20 Barracuda 36 Product Manual, Rev. C 6.2.1 Conducted noise immunity Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak to peak measurements and apply at the drive power connector. +5 V = +12 V = 150 mV pp from 0 to 50 kHz and 100 mV pp from 50 kHz to 10 MHz. 150 mV pp from 0 to 50 kHz and 100 mV pp from 50 kHz to 10 MHz. 6.2.2 Power sequencing The drive does not require power sequencing.
Barracuda 36 Product Manual, Rev. C 21 1.4 1.2 AC Component 1.0 0.8 +5V Current (amps) Nominal (average) DC curve 0.6 0.4 0.2 0.0 T1 T2 T 0.0 Figure 3b.
22 Barracuda 36 Product Manual, Rev. C 6.3 Power dissipation 24 1.0 20 0.8 16 0.6 12 0.4 8 0.2 4 0 0 0 Amperes Figure 3c. 5V A 12V A Watts Watts 1.2 20 40 60 80 100 I/Os per Second 120 140 160 DC current and power vs. input/output operations per second (LVD only) 1.2 24 1.0 20 0.8 16 0.6 12 0.4 8 0.2 4 5V A 12V A Watts Watts Amperes To obtain drive typical operating random read (8 blocks) power dissipation at nominal voltages, refer to Figures 3c and 3d.
Barracuda 36 Product Manual, Rev. C 23 gradient of 36°F (20°C) per hour. The enclosure for the drive should be designed such that the temperatures at the locations specified in Table 3, column 1 are not exceeded. Air flow may be needed to achieve these temperature values (see Section 8.3 and 8.3.1). Operation at case temperatures [4] above these values may adversely affect the drives ability to meet specifications.
24 Barracuda 36 Product Manual, Rev. C HDA Temp. Check Point .5 " Model “LW” PCBA [1] Model “LC” PCBA [1] U8 U8 U11 J4 J4 U15 U15 U11 U2 U16 U16 U4 U18 U19 U4 U18 U19 U5 J5 J1 PCBA 2 [1] Bottom side of PCBA Figure 4.
Barracuda 36 Product Manual, Rev. C 6.4.2 25 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. Operating –1,000 to +10,000 feet (–305 to +3,048 meters) b. Non-operating –1,000 to +40,000 feet (–305 to +12,210 meters) 6.4.
26 Barracuda 36 Product Manual, Rev. C d. Packaged 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). Package size Packaged/product weight Drop height <600 cu in (<9,800 cu cm) 600-1800 cu in (9,800-19,700 cu cm) >1800 cu in (>19,700 cu cm) >600 cu in (>9,800 cu cm) Any 0-20 lb (0 to 9.
Barracuda 36 Product Manual, Rev. C 6.4.4.2 27 Vibration a. Operating - normal The drive as installed for normal operation, shall comply with the complete specified performance while subjected to continuous vibration not exceeding 5-22 Hz @ 0.02 inches (0.51 mm) displacement peak to peak 22-350 Hz @ 0.5 G 0 to peak Vibration may be applied in the X, Y, or Z axis. b. Operating - abnormal 5-22 Hz @ 0.03 inches (0.76 mm) displacement peak to peak 22-350 Hz @ 0.75 G (X, Y, or Z axis) 0 to peak c.
28 Barracuda 36 Product Manual, Rev. C 6.5 Mechanical specifications The following table lists nominal dimensions for the drive. Refer to Figures 6a and 6b for detailed mounting configuration dimensions. See Section 8.4, “Drive mounting.” Height: Width: Depth: Weight: 1.62 in 4.000 in 5.75 in 2.2 pounds 41.1 mm 101.6 mm 146.05 mm .99 kilograms C [3] G [1] D F E A Notes: [1] Mounting holes three on each side, 6-32 UNC. Max screw length into side of drive 0.15 in. (3.81 mm).
Barracuda 36 Product Manual, Rev. C 29 C [3] G [1] D F E A Notes: [1] 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). [2] Mounting holes four on bottom, 6-32 UNC. Max screw length into bottom 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).
Barracuda 36 Product Manual, Rev. C 7.0 31 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).
32 Barracuda 36 Product Manual, Rev. C Table 4: Read and write retry count maximum recovery times [1] Read retry count Maximum recovery time per LBA (cumulative, msec) 0 108.68 0 91.96 1 125.4 1 117.04 2 426.36 2 125.4 3 459.8 3 150.48 4 526.68 4 300.96 5 593.56 5 359.48 6 677.16 6 593.56 7 802.56 7 618.64 8 836 8 660.44 9 911.24 9 685.52 10 2371.24 10 1735.68 11 (default) 3422.04 11 1760.76 12 1769.12 13 1794.2 14 1944.68 15 2003.
Barracuda 36 Product Manual, Rev. C 8.0 33 Installation The first thing to do when installing a drive is to set the drive ID (select) on the SCSI bus and set up certain operating options. This is usually done by installing small shorting jumpers on the pins of connectors J2 and J6 on the printed circuit board assembly (PCBA) (or J5 on the “LW” model), or via the drive to host I/O signals on the “LC” model. Some users connect cables to J6 or J5 and perform the set-up using remote switches.
34 Barracuda 36 Product Manual, Rev. C Drive Front Jumper Plug (enlarged to show detail) Pin 1 J6 Reserved L R E E D S A3 A2 A1A0 SCSI ID = 0 (default) SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7 SCSI ID = 8 SCSI ID = 9 SCSI ID = 10 SCSI ID = 11 SCSI ID = 12 SCSI ID = 13 SCSI ID = 14 SCSI ID = 15 Host Alternate Usage Plug: Reserved Pins 11 9 7 5 3 1 8 Shipped with cover installed. Do not install jumpers; retain cover.
Barracuda 36 Product Manual, Rev. C 35 Drive HDA (rear view, PCBA facing downward) Pin 1 J5 Pin 1 +5V Ground 4P 1P J1-DC Power Pin 12 68 Pin SCSI I/O Connector J1 3P 2P SCSI ID = 0 (default) PCBA SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 For ID selection use jumpers as shown or connect a cable for remote switching as shown below.
36 Barracuda 36 Product Manual, Rev. C J2 Jumper [1] Positions Pin 1 RR S D MW P E E T E S EP DSS P Force Single-Ended I/O Single-Ended or Low-Voltage Differential Delay Motor Start (default) Enable Motor Start Write Protect Parity Disable Term. Power to SCSI Bus J2 Jumper Plug (enlarged to show detail) [2] J2 J6 Drive Front [1] Jumper position names shown here are not marked on the PCBA. They are shown here for reference only. Additional notes on these functions in Section 8.1.1.
Barracuda 36 Product Manual, Rev. C 8.1.1 Function description J2 jumper installation SE On Off ME Off On Off On On PD On Off RES Off TP Off On 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. DS Off Off On WP On Off 37 Spindle starts immediately after power up—Default setting.
38 8.2 Barracuda 36 Product Manual, Rev. C Drive orientation The balanced rotary arm actuator design of the drive allows it to be mounted in any orientation. All drive performance 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. 8.
Barracuda 36 Product Manual, Rev. C 8.4 39 Drive mounting When mounting the drive using the bottom holes (x-y plane in Figure 5) care must be taken to ensure that the drive is not physically distorted due to a stiff non-flat mounting surface. The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). The following equation and paragraph define the allowable mounting surface stiffness: F K = --- = 80lb/in (14.
Barracuda 36 Product Manual, Rev. C 9.0 Interface requirements 9.1 General description 41 This section describes in essentially general terms the interface requirements supported by the Barracuda 36. 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.
42 9.3 Barracuda 36 Product Manual, Rev. C 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 36 Family drives can be changed back and forth between SCSI-1 and SCSI-2/SCSI-3 modes using the Change Definition Command. OEM standard drives are shipped set to operate in SCSI-2/ SCSI-3 mode.
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44 Barracuda 36 Product Manual, Rev.
Barracuda 36 Product Manual, Rev. C 45 Table 7 lists the Standard Inquiry command data that the drive should return to the initiator per the format given in the SCSI Interface Product Manual, part number 77738479.
46 Table 8: Byte Barracuda 36 Product Manual, Rev.
Barracuda 36 Product Manual, Rev. C Table 8: 47 Vital product data pages (Continued) Byte Page Supported 0 Peripheral qualifier/peripheral device type Y 1 Page code number C2 2 Reserved 00 3 Page length 02 4 Motor start, parity enable, SCSI ID, delayed motor start, motor start, write protect, parity enable, SCSI ID Y 5 Terminator enable N 9.3.2 Mode Sense data The Mode Sense command provides a means for the drive to report its operating parameters to the initiator.
48 Barracuda 36 Product Manual, Rev. C The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages for SCSI-2/SCSI-3 implementation (see the SCSI Interface Product Manual, P/N 77738479). Definitions: Table 9: SAV DEF CHG = Saved value = Default value. Standard drives are shipped configured this way. = Changeable bits; indicates if current and saved values are changeable.
Barracuda 36 Product Manual, Rev. C 9.4 49 SCSI bus conditions and miscellaneous features supported Asynchronous SCSI bus conditions supported by the drive are listed below. These conditions cause the SCSI device to perform certain actions and can alter the SCSI bus phase sequence. Other miscellaneous operating features supported are also listed here. Refer to the SCSI Interface Product Manual, part number 77738479, for details.
50 Barracuda 36 Product Manual, Rev. C Supported Conditions or feature Y Multi-initiator Y Multi-mode drivers/receivers (single-ended/differential) Y Parameter rounding Y Power management, SCSI-3 Y Queue tagging (up to 64 Que tags supported) Y Read look ahead crossing cylinder boundaries N Relative addressing—customer unique options Y Reporting actual retry count in Extended Sense bytes 15, 16 and 17.
Barracuda 36 Product Manual, Rev. C 51 9.5 Synchronous data transfer 9.5.1 Synchronous data transfer periods supported Table 11 and Section 9.5.2 list 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 operation. See the section on message protocol in the SCSI Interface Product Manual, part number 77738479, “Extended message” section.
52 Barracuda 36 Product Manual, Rev. C Pin 1P 2P 3P 4P J1 Pin 1 Power +12V +12V ret + 5V ret + 5V J5 Pin 1 J1-DC Power 4P 3P 2P 1P PCBA J1-DC Power J5 Pin 1 Pin 1P J1 Pin 1 68 Pin SCSI I/O Connector J2 J6 Figure 9a. Model “LW” drive physical interface (68 pin J1 SCSI I/O connector) J1 80 Pin SCSI I/O and Power Connector Pin 1 J2 J6 Note: See Table 13d for DC power pin assignments. Figure 9b.
Barracuda 36 Product Manual, Rev. C 9.6.2 53 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 singleended SCSI-2 and SCSI-3 standards.
54 Barracuda 36 Product Manual, Rev. C For “LC” model: The 80 pin connector option is intended for use on drives that plug directly into a PCBA or wall/bracket mounted connector in the host equipment. In such installations, all backplane wiring segments are subject to the electromagnetic concepts presented in Standard T10/1302D. For “LC” model drives, installations with connectors on cables are not recommended. 9.6.
Barracuda 36 Product Manual, Rev. C 55 Recommended mating 80-position PCBA mount connectors: Straight-in connector Seagate P/N: Amp US P/N: or Amp US P/N: or Amp Japan P/N: Hot plug version (with ground guide-pin) 77678703 2-557103-1 94-0680-02-1 2-557103-2 94-0680-02-2 5-175475-9 787311-1 with polarization 787311-2 without polarization Right-angle to PCBA connectors Seagate P/N: 77678559 Amp US P/N: 2-557101-1 Amp Japan P/N: 5-175474-9 For additional information call Amp.
56 Barracuda 36 Product Manual, Rev. C 3.650±.005 .346 .155 1.650 .270 .3937 .050 .600 .0787 .022 .200 .020 .047 .60 (15.24) .519 (13.18) .100 (2.54) 1.816 (46.13) .315 (8.00) Position 1 .20 typ (5.08) Pos. 1 32 4 18 54) .050 (1.27) Pos. 35 1.650 (41.91) .0787 (2.00) Pos. 68 .980 (24.89) 1.368 (37.74) .840 ± .005 (21.34) Pos. 2 .085 x 45° chamfer (2.16) typ Pos. 1 .767 (19.48) 3.650 (92.71) Figure 11a. Nonshielded 68 pin SCSI device connector used on “LW” models 1 .315 ± .
Barracuda 36 Product Manual, Rev. C 57 7.00 (.276) 12.70 (.500) End View Grounding Pins 2.15±0.10 2 places 57.87 0 (2.278) –0.15 + .000 [ – .006 [ 0.15 M Y M –Y– CL of Datum Y Front View Pin 1 62.15 ± 0.15 (2.447) (± .005) 0.15 M Y M Insert mating I/O connector Housing X Top View Contact 0.50 (.020) 0.3 M Y M (.012) Pin 1 1.27 (.05) Typ X CL of Datum Y Grounding Pins Pin 40 Back View Pin 41 Pin 80 Figure 11b.
58 Barracuda 36 Product Manual, Rev. C Table 13a: Note. “LW” models SE operation 68 conductor cable signal/pin assignments (Nonshielded connector)[11] The minus sign next to the signal indicates asserted state is the low voltage of the two levels used for logic signals.
Barracuda 36 Product Manual, Rev. C Table 13b: Note. 59 “LW” models differential 68 conductor cable signal/pin assignments (Nonshielded connector)[11] The minus sign next to the signal indicates asserted state is the low voltage of the two levels used for logic signals.
60 Table 13c: Barracuda 36 Product Manual, Rev.
Barracuda 36 Product Manual, Rev. C Table 13d: Note. 61 “LC” differential models, 80 pin I/O connector pin assignments (nonshielded connector) [11] The minus sign next to the signal indicates asserted state is the low voltage of the two levels used for logic signals.
62 Barracuda 36 Product Manual, Rev. C Notes [ ] for Tables 13a, 13b, 13c, and 13d. [1] [2] See Section 9.7.1 or 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. [3] Connector contacts are on 0.050 inch (1.27 mm) centers.
Barracuda 36 Product Manual, Rev. C 9.7 63 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. This connector is not recommended where cabling is required. “LC” and “LW” models are Multimode drives.
64 Barracuda 36 Product Manual, Rev. C LVD Differential Driver Signal + 1.55V –15ma .95V +15ma .95V +15ma 1.55V –15ma Signal – V0 = True / Logic 1 / Assertion LVD Differential Driver Signal + Signal – V0 = False / Logic 0 / Negation |V0| = .6V Figure 12. LVD output signals 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.
Barracuda 36 Product Manual, Rev. C 9.8 65 Terminator requirements All single initiator/single target (non-daisy-chain) applications require that the Initiator and disc drive be terminated. 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).
66 Barracuda 36 Product Manual, Rev. C 9.10 Disc drive SCSI timing Table 14: Disc drive SCSI timing These values are not current Barracuda 36 values, but are listed for information only. Description Waveform symbol [1] Waveform table [1] Typical timing Target Select Time (no Arbitration) T00 N/A <1.4 µs Target Select Time (with Arbitration) T01 4.5-1,2 1.93 µs Target Select to Command T02 4.5-1 3.77 µs Target Select to MSG Out T03 4.5-2 1.57 µs Identify MSG to Command T04 4.
Barracuda 36 Product Manual, Rev. C Table 14: 67 Disc drive SCSI timing These values are not current Barracuda 36 values, but are listed for information only. Waveform symbol [1] Waveform table [1] Typical timing T23.10.10 4.5-4 0.12 µs ±1 µs Data In Byte Transfer (parameter) T24 4.5-12 0.04 µs Data Out Byte Transfer (parameter) T25 4.5-13 0.04 µs Next Data In Byte Access (parameter) T26 4.5-12 0.12 µs Next Data Out Byte Access (parameter) T27 4.5-13 0.
Barracuda 36 Product Manual, Rev. C 10.0 69 Seagate Technology support services Online Services Internet www.seagate.com for information about Seagate products and services. Worldwide support is available 24 hours daily by e-mail for your disc or tape questions. Presales Support: Disc: http://www.seagate.com/support/email/email_presales.html or DiscPresales@Seagate.com. Tape: http://www.seagate.com/support/email/email_tape_presales.html or Tape_Sales_Support@Seagate.com.
70 Barracuda 36 Product Manual, Rev. C Technical Support If you need help installing your drive, consult your dealer. Dealers are familiar with their unique system configurations 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####). SeaTDD™ (+1-405-936-1687) is a telecommunications device for the deaf (TDD).
Barracuda 36 Product Manual, Rev. C 71 European Support Services For European customer support, dial the toll-free number for your specific country for presales support, technical 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 A.M. to 5:00 P.M. (European central time) Monday through Friday. The European call center is located in Amsterdam, The Netherlands.
Barracuda 36 Product Manual, Rev. C Appendix A.
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78 D daisy-chain 20, 53, 55, 65 80 conductor 54 data area 20 data correction 13 data transfer period 51 data transfer protocol 7 data transfer rate 9 DC cable and connector 51 DC current 53 DC power 10, 13, 37, 51 DC power carrying conductor 54 DC power connector 51, 52 DC power requirements 19 DC power source 54 dedicated landing zone 5 default 37 default mode parameter 33 default value 47, 48 defect/error management 31 delayed motor start option 19, 62 delayed start 37 depot repair 14 depot repair philos
Barracuda 36 Product Manual, Rev. C format command 9 format time 10 formatted 8 formatting 33 front panel LED 62 G GOOD 12 gradient 23, 25 ground return 19 grounding 39 H hard reset 47 hardware error 14 HDA 5, 14, 23, 38, 39 temperature 23 head and disc assembly.
80 mounting surface 39 mounting surface distortion 39 mounting surface stiffness 39 MR heads 5 MTBF 13, 14, 23 multimode drivers 15 multimode receivers 15 multimode SCSI 7 multiple segment 11 multi-segmented cache control 11 N noise 20 audible 3, 7 non-operating 25, 27 temperature 23 non-operating vibration 27 nonshielded 68 conductor connector 54 O office environment 27 operating 25, 27 operating environment 14 operating option 33 operating parameter 47 operator intervention 13 option jumper 33 option ju
Barracuda 36 Product Manual, Rev. C reliability specifications 13 remote switch 33 repair facility 14 repair information 17 REQ/ACK offset 51 request sense command 32 request sense information 14 resonance 25 retrieved data 11 S S.M.A.R.T.
82 synchronous transfer period 67 synchronous transfer rate 10 system chassis 39 system recovery procedures 13 T T10/1302D 4, 53, 54, 55, 63, 64 technical support services 69, 73 temperature 10, 22, 23, 38 ambient 22, 23 case 23 gradient 22 maximum case 23 non-operating 23 PCBA and HDA 23 regulation 3 See also cooling terminated 20 termination 20 active 65 disc drive 65 initiator 65 terminator 37 active 65 passive 65 terminator power 37, 65 terminator requirements 33, 65 termpower 37 TERMPWR 65 tracks/inch
Seagate Technology, LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 77767528, Rev.
