................................................. Barracuda 9 Disc Drive ................................................. ST19171N/W/WD/WC/DC ................................................. ................................................. ................................................. Product Manual, Volume 1 .................................................
................................................. Barracuda 9 Disc Drive ................................................. ST19171N/W/WD/WC/DC ................................................. ................................................. ................................................. Product Manual, Volume 1 .................................................
© 1997 Seagate Technology, Inc. All rights reserved Publication number: 83329030, Rev. C July 1997 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology, Inc. Barracuda, SeaFAX, SeaFONE, SeaNET, SeaTDD, and SeaBOARD are either trademarks or registered trademarks of Seagate Technology, Inc. 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 12/06/96 04/10/97 D. Ashby/G. Olson D. Ashby/G. Olson Rev. C 06/26/97 D. Ashby/G. Olson All 3, 4, 5, 7, 9, 10, 12, 18, 24, 25, 26, 31, 44, 46, 47, 49, 50, 52, 55, 56, 58, 66, 67, 69, 70, 75, and 76. 9, 10, 16, 18, 23, 24, 33, 34, 49, 50, 53, and 61. This manual 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 9 Product Manual, Rev. C v Contents 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Applicable standards and reference documentation. . . . . . 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1.1 Electromagnetic compatibility . . . . . . . . . . . . 2.1.2 Electromagnetic susceptibility. . . . . . . . . . . . 2.2 Electromagnetic compliance .
vi Barracuda 9 Product Manual, Rev. C 6.5 6.4.3 Effective altitude (sea level) . . . . . 6.4.4 Shock and vibration . . . . . . . . . . . 6.4.5 Air cleanliness . . . . . . . . . . . . . . . 6.4.6 Acoustics . . . . . . . . . . . . . . . . . . . 6.4.7 Electromagnetic susceptibility . . . Mechanical specifications . . . . . . . . . . . . . . ....... ....... ....... ....... ....... ....... ...... ...... ...... ...... ...... ...... ....... ....... ....... ....... ....... ....... ...... ...... ...... ......
Barracuda 9 Product Manual, Rev. C vii List of Figures Figure 1. Figure 2. Figure 3. Figure 4a. Figure 4b. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Barracuda 9 disc drive (ST19171N drive shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Barracuda 9 family drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Barracuda 9 Product Manual, Rev. C 1.0 1 Scope This manual describes Seagate Technology®, Inc. Barracuda 9™ disc drives. Barracuda 9 drives support the small computer system interface (SCSI) as described in the ANSI SCSI, SCSI-2, and SCSI-3 (Fast-20) 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 9 Product Manual, Rev. C 2.0 3 Applicable standards and reference documentation The drive is a system peripheral developed to the highest standards of design and construction. The drive depends on its host equipment to provide adequate power and environment to achieve optimum performance and compliance with applicable industry and government regulations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation.
4 Barracuda 9 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 9 Installation Guide Seagate part number: 83329020 SCSI Interface Product Manual (Volume 2) Seagate part number: 77738479 ANSI small computer system interface (SCSI) document numbers: X3.
Barracuda 9 Product Manual, Rev. C 3.0 5 General description Barracuda 9 drives combine magnetoresistive (MR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a SCSI-3 (Fast-20) interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers. Fast-20 (also known as Ultra SCSI) is a negotiated transfer rate.
6 Barracuda 9 Product Manual, Rev. C Figure 2. Barracuda 9 family drive 3.
Barracuda 9 Product Manual, Rev. C 3.2 7 Media characteristics The media used on the drive has a diameter of approximately 3.5 inches (86 mm). The aluminum substrate is coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection. 3.3 • • • • • • Performance Supports industry-standard Ultra SCSI interface (also called “Fast-20 SCSI”) [1] Programmable multi-segmentable cache buffer 7,200 RPM spindle; average latency = 4.
8 3.8 Barracuda 9 Product Manual, Rev. C Options (factory installed) All options that a customer may request are incorporated during production or packaged at the manufacturing facility before shipping. Some of the options available are: • The capacities shown in Section 3.5. You can order other capacities by selecting other sparing schemes and sector sizes. • 2 Mbyte data buffer. • Single-unit shipping pack. The drive normally ships in bulk packaging to provide maximum protection against transit damage.
Barracuda 9 Product Manual, Rev. C 9 4.0 Performance characteristics 4.1 Internal drive characteristics (transparent to user) ST19171 Drive capacity Read/write heads Bytes/track Bytes/surface Tracks/surface, total Tracks/inch Bits/inch, minimum Bits/inch, maximum Internal data rate Disc rotational speed Average rotational latency [1] 11.
10 Barracuda 9 Product Manual, Rev. C SCSI interface data transfer rate (asynchronous) [4]: Maximum instantaneous Maximum average 5.0 Mbytes/sec [5] 10.0 Mbytes/sec [6] Synchronous transfer rate for SCSI Fast-20 (Ultra SCSI) (8 bit data bus models) 2.5 to 20 Mbytes/sec Synchronous transfer rate for SCSI Fast-20 (Ultra SCSI) (16 bit data bus models) 5.0 to 40 Mbytes/sec Synchronous transfer rate for fast SCSI-2 (8 bit data bus models) 1.
Barracuda 9 Product Manual, Rev. C 4.3 11 Start/stop time Disabling the Motor Start option causes the drive to become ready within 30 seconds after DC power is applied at nominal voltage. This means the motor starts as soon as power is applied. If a recoverable error condition is detected during the start sequence, the drive will execute a recovery procedure and may cause the time to become ready to be as much as 60 seconds. During this time the drive responds to some commands over the SCSI interface.
12 Barracuda 9 Product Manual, Rev. C Case B - Read command is received and the first logical block address requested is not in any segment of the cache. 1. The drive fetches the requested logical blocks from the disc and transfers them into a segment, then from there to the initiator in accordance with the “buffer-full” ratio specification given in Mode Select Disconnect/ Reconnect parameters, page 02h (see the SCSI Interface Product Manual). 2.
Barracuda 9 Product Manual, Rev. C 13 replaces data already in some buffer segment(s), the host can limit the amount of prefetch data to optimize system performance. The max prefetch field (bytes 8 and 9) limits the amount of prefetch. The drive does not use the prefetch “ceiling” field (bytes 10 and 11). During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if the Discontinuity (DISC) bit is set to one in bit 4 of byte 2 of Mode parameters page 08h.
Barracuda 9 Product Manual, Rev. C 5.0 15 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).
16 5.1.4 Barracuda 9 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 should not be more than 1 recoverable seek error in 107 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 (3h) or Hardware error (4h) reported in the Sense Key.
Barracuda 9 Product Manual, Rev. C 5.2.6 17 Hot plugging Barracuda 9 disc drives Caution: Hot-plug drives are not designed for simultaneous power disconnection and physical removal. During power-up and power-down periods, the hot SCSI connect/disconnect capability does not produce glitches or any corruptions on an active SCSI bus. Barracuda 9 drives conform to the SCSI-3 standard requirements for glitch-free power-on and power-off.
18 Barracuda 9 Product Manual, Rev. C 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. attribute data will be saved to the disc for the purpose of recreating the events that caused a predictive failure. The drive will measure and save parameters once every two hours subject to an idle period on the SCSI bus.
Barracuda 9 Product Manual, Rev. C 19 Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in transit. Contact your Authorized Seagate Distributor to purchase additional boxes. Seagate recommends shipping by an air-ride carrier experienced in handling computer equipment. Product repair and return information Seagate customer service centers are the only facilities authorized to service Seagate drives. Seagate does not sanction any third-party repair facilities.
Barracuda 9 Product Manual, Rev. C 6.0 21 Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of Barracuda 9 drives. 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’s power connector. The power requirements for single-ended models includes the internal disc drive SCSI I/O termination.
22 Barracuda 9 Product Manual, Rev. C [9] Track following at track 0. [10] Seeking is defined as a third-stroke seek at OD. A command is issued every 20 msec. [11] Read track is defined as repeat reads of track 15 with a duty cycle of 92% for narrow single-ended and 54% for wide differential. General Notes from Table 2: 1. Minimum current loading for each supply voltage is not less than 4% of the maximum operating current shown. 2. The +5 and +12 volt supplies shall employ separate ground returns. 3.
Barracuda 9 Product Manual, Rev. C 23 3.0 Peak AC 2.5 +12V CURRENT (A) Peak DC 2.0 1.5 Min AC 1.0 0.5 0.0 T0 T1 0.0 T3 T2 2 4 6 TIME (S) 8 Figure 3. Typical Barracuda 9 drive +5 V and +12 V current profile 6.3 Power dissipation 10 12 ST19171N/W/WC For drives with single-ended interface circuits, typical operating random read power dissipation is 14.7 watts (50 BTUs per hour) of DC power average at nominal voltages.
24 Barracuda 9 Product Manual, Rev. C these temperatures. See Section 8.3.1. Continual or sustained operation at case temperatures above these values may degrade MTBF. To confirm that the required cooling for the Barracuda electronics and HDA is provided, place the drive in its final mechanical configuration, perform operations that represent typical drive usage and, after the temperatures stabilize, measure the case temperature of the components listed in Table 3 (see notes [2] and [3]).
Barracuda 9 Product Manual, Rev. C 25 ST19171N Drives 1 4 ST19171DC Drives 1 4 2 2 3 DYKX XYJX ST19171WD Drives 4 1 ST19171WC Drives 4 1 2 2 3 FYJX HYJX ST19171W Drives 4 1 2 2.0 0" GYJX Figure 4a. 3 3 Location of PCB components listed in Table 3 HDA Temp. Check Point 1.
26 Barracuda 9 Product Manual, Rev. C ST19171N Drives 1 4 ST19171DC Drives 1 4 2 2 3 ABAJ EBAJ ST19171WD Drives 4 1 ST19171WC Drives 4 1 2 2 3 CBAJ DBAJ ST19171W Drives 4 1 2 2.0 0" BBAJ Figure 4b. 3 3 Location of PCB components listed in Table 3 HDA Temp. Check Point 1.
Barracuda 9 Product Manual, Rev. C 27 b. Non-operating Non-operating temperature should remain between –40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This assumes that the drive is packaged in the shipping container designed by Seagate. 6.4.2 Relative humidity The values below assume that no condensation on the drive occurs. a. Operating 5% to 90% non-condensing relative humidity with a maximum gradient of 10% per hour. b.
28 Barracuda 9 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) 600-1,800 cu in (9,800-19,700 cu cm) >1,800 cu in (>19,700 cu cm) >600 cu in (>9,800 cu cm) Any 0-20 lb (0-9.
Barracuda 9 Product Manual, Rev. C 29 Vibration occurring at these levels may degrade operational performance during the abnormal vibration period. Specified operational performance will continue when normal operating vibration levels are resumed. This assumes system recovery routines are available. c. Non-operating The limits of non-operating vibration apply to all conditions of handling and transportation. This includes both isolated drives and integrated drives.
30 Barracuda 9 Product Manual, Rev. C 6.5 Mechanical specifications The following nominal dimensions are exclusive of the decorative front panel accessory. However, dimensions of the front panel are shown in the figure below. Refer to Figures 6, 7, and 8 for detailed mounting configuration dimensions. See Section 8.4, “Drive mounting.” Typical Maximum Height: 1.62 in 41.1 mm 1.654 in 42.0 mm Width: 4.00 in 101.6 mm 4.01 in 101.9 mm Depth: 5.75 in 146.05 mm 5.787 in 147 Weight: 2.
Barracuda 9 Product Manual, Rev. C 31 N P A [1] [3] R C M F D L G E Notes: .050 in. (1.27mm) minimum clearance [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 (.
32 Barracuda 9 Product Manual, Rev. C N P A [1] [3] R C M F D L G E Notes: .050 in. (1.27mm) minimum clearance [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 (.
Barracuda 9 Product Manual, Rev. C 7.0 33 Defect and error management The drive, as delivered, complies with this product manual. The read error rate and specified storage capacities are not dependent on using 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).
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Barracuda 9 Product Manual, Rev. C 8.0 35 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 PCB (or J1-Auxiliary on the “W” and “WD” models), or via the drive to host I/O signals on “WC” and “DC” models. Some users connect cables to J6 or J1-Auxiliary and perform the set-up using remote switches.
36 Barracuda 9 Product Manual, Rev. C J2 RT T T D MW P E P P E S EP DS 2 1 Pin 1 Pin 2 Enable Terminator (default) Drive Front Delay Motor Start Enable Motor Start Write Protect Pin 1 Jumper Plug (enlarged to show detail) Disable SCSI Parity Reserved Pin 1 J6 [4] [3] Term. Power from Drive (default) Term. Power to SCSI Bus Term. Power from SCSI Bus (position A) Term.
Barracuda 9 Product Manual, Rev. C 37 J2 RT T T D MW P E P P E S EP DS 2 1 ST19171W/WD Pin 1 Pin 2 Delay Motor Start Enable Motor Start Drive Front Write Protect Disable SCSI Parity Pin 1 Jumper Plug (enlarged to show detail) Reserved [3] ST19171W Enable Terminator (default) Pin 1 J6 [4] Term. Power from Drive (default) Term. Power to SCSI Bus Term. Power from SCSI Bus (position A) Term. Power to SCSI Bus and Drive SCSI ID = 0 (default) ST19171WD SCSI ID = 1 Term.
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Barracuda 9 Product Manual, Rev. C 8.1.1 39 Notes for Figures 9, 10, and 11 [1] Notes explaining the functions of the various jumpers on jumper header connectors J2, J1-Auxiliary and J6 are given here and in Section 8.1.2. The term “default” means as standard OEM units are configured with a jumper on those positions when shipped from factory. “Off” means no jumper is installed; “On” means a jumper is installed. OFF or ON underlined is factory default condition.
40 Barracuda 9 Product Manual, Rev. C 8.1.2 Function description J2 Jumpers Jumper Function Description TE On Off (Applies only to “N” and “W” models) On-board (non-removable) terminator circuits are enabled. (Default) On-board (non-removable) terminator circuits are disabled. DS Off Off On ME Off On Off On On (Applies to all models) Spindle starts immediately after power up. (Default) Spindle does not start until a Start Unit command is received from the host.
Barracuda 9 Product Manual, Rev. C 8.2 41 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.
42 8.4 Barracuda 9 Product Manual, Rev. C 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 9 Product Manual, Rev. C 9.0 43 Interface requirements This section describes Barracuda 9 interface requirements. 9.1 General description This section partially describes the interface requirements as implemented on the drives. The major portion of the interface requirements/implementation is described in the SCSI Interface Product Manual , part number 77738479.
44 9.3 Barracuda 9 Product Manual, Rev. C SCSI interface commands supported Table 7 lists the SCSI interface commands that are supported in the SCSI-2 and SCSI-3 modes of the drive. OEM standard drives are shipped set to operate in SCSI-2/SCSI-3 mode. Barracuda family drives can be changed back and forth between SCSI-1, SCSI-2, and SCSI-3 modes using the Change Definition command.
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Barracuda 9 Product Manual, Rev. C 9.3.1 47 Inquiry data Table 8 following lists the Standard Inquiry command data that the drive returns to the initiator per the format given in the SCSI Interface Product Manual, part number 77738479, section 5.1.1.3.
48 Barracuda 9 Product Manual, Rev. C Saved values are stored on the disk media using a Mode Select command. Only parameter values that are allowed to be changed can be changed by this method. “Changeable values” are defined below. Parameters in the saved values list that are not changeable by the Mode Select command get their values from the default values storage. Current values are volatile values currently being used by the drive to control its operation.
Barracuda 9 Product Manual, Rev. C 49 The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages (see SCSI Interface Product Manual, part number 77738479). Definitions: SAV = Saved values are stored on the disk media using a Mode Sense command. DEF = Default value; standard drives are shipped configured this way. CHG= Changeable bits; indicates if current and saved values are changeable.
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Barracuda 9 Product Manual, Rev. C 9.4 51 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.
52 Barracuda 9 Product Manual, Rev. C 9.5 Synchronous data transfer 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. 9.5.1 Synchronous data transfer periods supported Table 11 lists synchronous data transfer periods supported by the drive.
Barracuda 9 Product Manual, Rev. C 53 Pin 1P 2P 3P 4P Power +12V +12V ret + 5V ret + 5V J1 4P 3P 2P 1P DC Power Connector Pin 1 Pin 1 J1 SCSI I/O Connector J2 J6 Figure 13.
54 Barracuda 9 Product Manual, Rev. C Pin 1P 2P 3P 4P J1 Pin 1 Power +12V +12V ret + 5V ret + 5V J1-Auxiliary Pin 1A J1-DC Power 4P 3P 2P 1P PCB J1-DC Power J1-Auxiliary Pin 1A Pin 1P J1 Pin 1 68 Pin SCSI I/O Connector J2 J6 Figure 14. Physical interface for “W” and “WD” model drives (68-pin J1 SCSI I/O connector) J1 80 Pin SCSI I/O and Power Connector Pin 1 J2 J6 Note: See Table 16 and 17 for DC power pin assignments. Figure 15.
Barracuda 9 Product Manual, Rev. C 9.6.2 55 SCSI interface physical description The drives may be daisy-chained together or with other compatible SCSI devices. Both ends of the cable must be terminated. The “N,” “W,” and “WC” model drives implement single-ended drivers and receivers. All signals are common between all SCSI devices. The drive may be daisy-chained only with SCSI devices having the same type drivers and receivers.
56 Barracuda 9 Product Manual, Rev. C 9.6.3.1 Single-ended I/O circuits (“N,” “W,” and “WC” models) The maximum total cable length allowed with drives having single-ended I/O driver and receiver circuits depends on several factors. Table 12 lists the maximum lengths allowed for different configurations of drive usage. These values are from the ANSI SCSI-3 Fast-20 (also called Ultra SCSI) specification X3T10/1071D.
Barracuda 9 Product Manual, Rev. C 9.6.4 57 Mating connectors Part numbers for connectors that mate with the various Barracuda 9 I/O connectors are given in the sections following. 9.6.4.1 Mating connectors for ST19171N model Use a non-shielded 50-conductor cable connector consisting of two rows of 25 female contacts with adjacent centers 100 mils apart.
58 Barracuda 9 Product Manual, Rev. C To insure that both drive connector and host equipment mating connector mate properly, both drive connector and host equipment mating connector must meet the provisions of “SFF-8046 Specification for 80-pin connector for SCSI Disk Drives.
Barracuda 9 Product Manual, Rev. C 59 “W” Model Drive “N” Model Drive [6] “WD” Model Drive [6] [6] Note: Do not mix “W” and “WD” model drives on the daisy chain. [7] [1] [7] Terminator 2 through X SCSI devices [4] Pin 1 (check your adapter for Pin 1 location) SCSI ID 1 SCSI ID 7 [5] [2] [1] Host Adapter PCB SCSI ID 0 [3] [2] [1] [2] [3] [4] [5] [6] [7] Closed-end type 50-pin connector used. Install terminator enable (TE) jumper plug. Open-end type (in-line application) connector used.
60 Barracuda 9 Product Manual, Rev. C Insert mating cable connector here .370 ± .010 (9.398) .60 (15.24) .42 Ref. (10.67) .20 Typ. (5.08) .065 x 45° Chamfer Typ. (1.65) .26 Typ. (6.60) Pin 1 .037 Ref. Typ. (.94) 3 2 4 1 CL .100 (2.54) .025 (.64) .335 ± .010 (8.50) +.001 .083 –.002 Dia. Sq. Contact (2.1) Trifurcated Pin (4 places) 50 Places .16 (4.06) .100 Typ. (2.54) "D" ± .010 .051 (1.30) .045 Min. Typ. (1.14) "C" ± .010 3 .834 ± .010 (21.18) .040 Ref. (1.02) "B" Ref. "A" ± .
Barracuda 9 Product Manual, Rev. C 61 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 Pos. 1 .20 typ (5.08) 32 4 .218 (5.54) .050 (1.27) Pos. 35 1.650 (41.91) .0787 (2.00) Pos. 68 .980 (24.89) 1.368 (34.74) 3.650 (92.71) Figure 18. Non-shielded 68-pin SCSI device connector .840 ± .005 (21.34) Pos. 2 .085 x 45° chamfer (2.16) typ Pos. 1 .767 (19.48) 1 .315 ± .010 (8.00) +.001 .
62 Barracuda 9 Product Manual, Rev. C Side View Section X–X .276 (7.00) .060 (1.52) .500 (12.70) .106 (2.70) End View Grounding Pins .052 (1.32) .085±0.004 2 places .038±.004 (.97±0.10) 2.278 +.000 (57.87) –.006 +0 –0.15 [ 0.006 M Y M –Y– [ CL of Datum Y Front View Pin 1 2.447 ±.006 (62.15) (±0.15) 0.006 M Y M Insert mating I/O connector Housing X Top View Contact .020 (0.50) .012 M Y M (0.3) .05 (1.27) Typ X CL of Datum Y Grounding Pins Pin 1 Back View Figure 19.
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64 Table 14: Barracuda 9 Product Manual, Rev.
Barracuda 9 Product Manual, Rev. C Table 15: Note. 65 Wide differential P cable assignments (non-shielded connector) for ST19171WD drives The minus sign next to the signal indicates asserted state is the low voltage of the two levels used for logic signals.
66 Table 16: Barracuda 9 Product Manual, Rev.
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68 Barracuda 9 Product Manual, Rev. C Notes [ ] for Tables 13 through 17: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] See Section 9.7.1 for detailed electrical characteristics of these signals. The conductor number refers to the conductor position when using 0.025-inch (0.635 mm) centerline flat ribbon cable. Other cable types may be used to implement equivalent contact assignments. Connector contacts are on 0.050 inch (1.27 mm) centers.
Barracuda 9 Product Manual, Rev. C 9.7 69 Electrical description ST19171N and ST19171W models use single-ended interface signals. These signals must be terminated with 110-ohm active termination circuits at each end of the total cable. Single-ended circuits use open collector or three state drivers. All of these models can be configured to provide the SCSI termination.
70 Barracuda 9 Product Manual, Rev. C 9.7.2 Differential drivers/receivers Typical differential driver and receiver circuits used by ST19171WD drives are shown in Figure 21. The drive has no provisions for terminator circuits on differential I/O drives. Differential signals All differential interface signals consist of two lines denoted +SIGNAL and –SIGNAL. A signal is true when +SIGNAL is more positive than –SIGNAL, and a signal is false when –SIGNAL is more positive than +SIGNAL.
Barracuda 9 Product Manual, Rev. C 71 +5V Term [5] Power +5V 5.6K TE Transmit/Receive Enable [1] LSI RE XCVR DIFFSENS [6] Disable 330 Ohm [3] Twisted or Flat Cable Pair 1 Transmit or Receive Signal [2] 150 Ohm 1 R [4] 2 330 Ohm [7] SCSI Device at Beginning of I/O Cable (usually Host Adaptor/Initiator) +5V Term [5] Power +5V 5.
72 Barracuda 9 Product Manual, Rev. C 9.8 Terminator requirements ST19171N and ST19171W drives Internal disc drive I/O termination consists of active circuits contained in an LSI module that is permanently mounted on the PCB. All single initiator/single target (non-daisy-chain) applications require you to terminate the initiator and drive. Terminate both ends of the SCSI bus with ANSI SCSI-2 standard alternative 2 (active) termination. Do not mix active and passive terminators on the same SCSI bus.
Barracuda 9 Product Manual, Rev. C 9.10 Disc drive SCSI timing Table 18: Disc drive SCSI timing 73 Description Waveform symbol [1] Waveform table [1] Typical timing Target select time (no arbitration) T00 N/A <1 µs Target select time (with arbitration) T01 4.5-1,2 2.31 µs Target select to command T02 4.5-1 3.33 µs Target select to MSG out T03 4.5-2 1.51 µs Identify MSG to command T04 4.5-3 3.34 µs Command to status T05 4.5-5 Command dependent Command to data (para.
74 Barracuda 9 Product Manual, Rev. C Description Waveform symbol [1] Waveform table [1] Typical timing Data in byte transfer (parameter) T24 4.5-12 0.04 µs max. Data out byte transfer (parameter) T25 4.5-13 0.04 µs max. Next data in byte access (parameter) T26 4.5-12 0.10 µs Next data byte out access (parameter) T27 4.5-13 0.10 µs Data in byte transfer (media) [2] T28 4.5-12 0.03 µ Data out byte transfer (media) [2] T29 4.5-13 0.
Barracuda 9 Product Manual, Rev. C 10.0 75 Seagate technical support services If you need assistance 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 assistance with your Seagate® drive or other Seagate products, use one of the Seagate technical support services listed below.
76 Location Germany Hong Kong Japan Korea Singapore Taiwan USA Barracuda 9 Product Manual, Rev. C Phone number 49-89-1430-5100 852-2368 7173 81-3-5462-2979 82-2-556-7294/4251 65-488-7528 886-2-715-2923 408-944-9120 Direct-support services Seagate technical support For one-on-one help, you can talk to a technical support specialist during local business hours. Before calling, note your system configuration and drive model number (STxxxx).
Barracuda 9 Product Manual, Rev.
78 DC power connector 52 DC power requirements 21 DCRT bit supported 44 dedicated landing zone 5, 6 default 39 default mode parameter 35 default values 47 defect and error management 33 defect/error management 33 deferred error 45 deferred error handling 51 delayed motor start 21 description 5 device behavior page 44 devices multiple 35 differential drivers/receivers 70 differential I/O circuits 56 differential interface circuits available 51 differential interface signals 69 differential signals 70 differe
Barracuda 9 Product Manual, Rev.
80 mounting configuration dimensions "N" models 30 "W" and "WD" models 31 "WC" and "DC" models 32 mounting orientation 41 MR heads 5 MTBF.
Barracuda 9 Product Manual, Rev. C remote switch 35 repair 16 reporting actual retry count 51 REQ/ACK offset 52 request sense command 34, 45 reservation conflict status 51 reserve command 45 reset condition 51 restore pointers SCSI message 43 rezero unit command 45 rigid disc drive geometry page 45 rotational latency average 9, 10 S S.M.A.R.T. 7, 17 S.M.A.R.T. attribute log page 44 S.M.A.R.T.
82 terminate I/O process SCSI message 43 terminator 35, 72 circuits 69 enable jumper TE 35 power 72 requirements 35, 72 test unit ready command 46 TMC bit 44 tracks 9 transfer rate 10 translate page 45, 46 transmitter characteristics 69 troubleshooting 16, 75 TSD bit 44 twisted pair cable 55 U ultra SCSI 5 unformatted capacities 7 unit attention page 45 unit serial number page 44 unrecoverable error 15 unrecoverable write errors 15 V verify command 46 verify error counter page 44 verify error recovery pag
Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 83329030, Rev.
