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Cheetah 73LP Family:

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ST373405LW/LWV/LC/LCV

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ST336605LC/LCV

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Product Manual, Volume 1

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Summary of content (90 pages)

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................................................. Cheetah 73LP Family: ................................................. ST373405LW/LWV/LC/LCV ................................................. ST336605LC/LCV ................................................. ................................................. Product Manual, Volume 1 .................................................
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................................................. Cheetah 73LP Family: ................................................. ST373405LW/LWV/LC/LCV ................................................. ST336605LC/LCV ................................................. ................................................. Product Manual, Volume 1 .................................................
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© 2001 Seagate Technology LLC All rights reserved Publication number: 100109943, Rev. C May 2001 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology LLC. Cheetah, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either registered trademarks or trademarks of Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications.
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Revision status summary sheet Revision Date Rev. A (Class C Release) 11/6/2000 Rev. B (Class A Release) 04/12/2001 Rev. C 05/17/2001 Writer/Engineer Sheets Affected L. Newman/J. Nowitzke L. Newman/J. Nowitzke L. Newman/J. Nowitzke 1/1, v thru viii, 1-76. All pages. Page 45. Notice. Product Manual 100109943 is Volume 1 of a two volume document with the SCSI Interface information in the SCSI Interface Product Manual, part number 75789509.
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Cheetah 73LP Product Manual, Rev. C v Contents 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Applicable standards and reference documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1.
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vi Cheetah 73LP Product Manual, Rev. C 6.5 6.4.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Cheetah 73LP Product Manual, Rev. C vii List of Figures Figure 1. Figure 2. Figure 3. Figure 4. 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. Figure 22. Figure 23. Figure 24. Figure 25. Cheetah 73LP family drive (ST373405LW shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Cheetah 73LP family drive . . . . . . . . . . . . . . . . . . . . . . . .
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Cheetah 73LP Product Manual, Rev. C 1.0 1 Scope This manual describes Seagate Technology® LLC, Cheetah 73LP™ disc drives. Cheetah 73LP drives support the small computer system interface (SCSI) as described in the ANSI SPI-3 (SCSI Parallel Interface-3) interface specification to the extent described in this manual. The SCSI Interface Product Manual (part number 75789509) describes general SCSI interface characteristics of this and other families of Seagate drives.
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2 Cheetah 73LP Product Manual, Rev.
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Cheetah 73LP 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.
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4 Cheetah 73LP 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).
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Cheetah 73LP Product Manual, Rev. C 3.0 5 General description Cheetah 73LP drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a wide Ultra160 SCSI interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers. The Ultra160 interface uses negotiated transfer rates.
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6 Figure 2. Cheetah 73LP Product Manual, Rev.
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Cheetah 73LP Product Manual, Rev. C 3.
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8 Cheetah 73LP 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 capacities: ST373405 ST336605 Formatted data block size 512 bytes/sector [1] Unformatted 088BB995h (73.4 GB) [2] 0445DCCBh (36.7 GB) [2] 97.0 GB 48.5 GB Notes. [1] [2] 3.6 Sector size selectable at format time.
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Cheetah 73LP Product Manual, Rev. C 9 4.0 Performance characteristics 4.1 Internal drive characteristics (transparent to user) 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 4.2 ST373405 ST336605 73.4 8 397,385 12,100 29,549 38,000 474 399-671 10,041 2.99 36.7 4 397,385 12,100 29,549 38,000 474 399-671 10,041 2.
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10 Cheetah 73LP Product Manual, Rev. C SCSI interface data transfer rate (asynchronous): Maximum instantaneous one byte wide Maximum instantaneous two bytes wide 5.0 Mbytes/sec [4] 10.0 Mbytes/sec [4] Synchronous formatted transfer rate On narrow (8-bit) bus in LVD mode On wide (16-bit) bus in LVD mode Ultra2 SCSI 5.0 to 40 Mbytes/sec 5.0 to 80 Mbytes/sec Ultra3 SCSI 5.0 to 80 Mbytes/sec 5.
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Cheetah 73LP Product Manual, Rev. C 4.5 11 Cache operation In general, 3,600 kbytes (14,399 kbytes of the 16,384 kbytes in LWV and LCV models) of the 4,096 kbytes of physical buffer space in the drive can be used as storage space for cache operations. The buffer can be divided into logical segments (Mode Select Page 08h, byte 13) from which data is read and to which data is written. The drive maintains a table of logical block disk medium addresses of the data stored in each segment of the buffer.
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12 Cheetah 73LP Product Manual, Rev. C that was written there at the beginning of the operation. However, the drive does not overwrite data that has not yet been written to the medium. If write caching is enabled (WCE=1), then the drive may return GOOD status on a write command after the data has been transferred into the cache, but before the data has been written to the medium.
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Cheetah 73LP 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).
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14 Cheetah 73LP Product Manual, Rev. C error (15h) is reported with a Medium error (3h) or Hardware error (4h) reported in the Sense Key. This is an unrecoverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculations. Refer to the SCSI Interface Product Manual, part number 75789509, for Request Sense information. 5.2 Reliability and service You can enhance the reliability of Cheetah 73LP disc drives by ensuring that the drive receives adequate cooling. Section 6.
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Cheetah 73LP Product Manual, Rev. C 5.2.6 15 Hot plugging Cheetah 73LP disc drives The ANSI SPI-3 (T10/1302D) 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.
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16 Cheetah 73LP Product Manual, Rev. C You can measure off-line attributes and force the drive to save the data by using the Rezero Unit command. Forcing S.M.A.R.T. resets the timer so that the next scheduled interrupt is in two hours. You can interrogate the drive through the host to determine the time remaining before the next scheduled measurement and data logging process occurs. To accomplish this, issue a Log Sense command to log page 0x3E. This allows you to control when S.M.A.R.T.
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Cheetah 73LP Product Manual, Rev. C 17 The most thorough option is the extended test that performs various tests on the drive and scans every logical block address (LBA) of the drive. The short test is time-restricted and limited in length—it does not scan the entire media surface, but does some fundamental tests and scans portions of the media. If DST encounters an error during either of these tests, it reports a fault condition.
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18 5.2.8.2.3 Cheetah 73LP Product Manual, Rev. C Short and extended tests DST has two testing options: 1. short 2. extended These testing options are described in the following two subsections. Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment. Short test (Function Code: 001b) The purpose of the short test is to provide a time-limited test that tests as much of the drive as possible within 120 seconds.
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Cheetah 73LP Product Manual, Rev. C 5.2.
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Cheetah 73LP Product Manual, Rev. C 6.0 21 Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Cheetah 73LP 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 table shows current values in Amperes.
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22 Cheetah 73LP 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 100 kHz and 100 mV pp from 100 kHz to 10 MHz 150 mV pp from 0 to 100 kHz and 100 mV pp from 100 kHz to 10 MHz 6.2.2 Power sequencing The drive does not require power sequencing.
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Cheetah 73LP Product Manual, Rev. C 23 Amperes +5 Volt Current during spindle start – Typical Amperes 1.5 Average value of waveform 1.0 0.5 Envelope of waveform 0 0.0 4 8 12 16 20 24 28 32 Seconds Figure 4. Typical ST336605 drive +12 V current profile +12 Volt Current during spindle start – Typical Amperes 3.0 Envelope of waveform 2.5 Amperes Average value of waveform 2.0 1.5 1.0 0.5 0.0 0.0 2 4 6 8 Seconds Figure 5.
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24 Cheetah 73LP Product Manual, Rev. C Amperes +5 Volt Current during spindle start – Typical Amperes 1.5 Envelope of waveform 1.0 0.5 Average value of waveform 0 0.0 4 8 12 16 Seconds Figure 6.
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Cheetah 73LP Product Manual, Rev. C 6.3 25 Power dissipation ST373405 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 9.9 watts (33.8 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 10.2 watts (34.8 BTUs per hour). To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see Figures 7 and 8).
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26 Cheetah 73LP Product Manual, Rev. C ST336605 For drives using single-ended interface circuits, typical power dissipation under idle conditions is 8.6 watts (29.4 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 8.9 watts (30.4 BTUs per hour). To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see Figures 7 and 8).
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Cheetah 73LP Product Manual, Rev. C 6.4 27 Environmental limits Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C). Maximum wet bulb temperature is 82°F (28°C). 6.4.1 Temperature a.
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28 Cheetah 73LP Product Manual, Rev. C 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) 6.4.4 Shock and vibration Shock and vibration limits specified in this document are measured directly on the drive chassis.
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Cheetah 73LP Product Manual, Rev. C 29 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. Z X Y X Figure 12.
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30 Cheetah 73LP Product Manual, Rev. C 6.4.4.2 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 5-400 Hz @ 0.5 G (zero to peak) Vibration may be applied in the X, Y, or Z axis. Operating normal translational random flat profile 10 - 500 Hz 0.4 GRMS b.
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Cheetah 73LP Product Manual, Rev. C 6.5 31 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 13 and 14 for detailed mounting configuration dimensions. See Section 8.4, “Drive mounting.” Height: Width: Depth: Weight: 1.000 in 4.000 in 5.75 in 1.5 pounds (ST373405) 25.4 mm 101.6 mm 146.05 mm 0.
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32 Cheetah 73LP Product Manual, Rev. C K S // T -Z- [1] -Z- L J H B Notes: R N -Z- -XA -Z- M [1] 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. (3.05 mm). C U -XA B C D E F H J K L M N P R S T U P F [1] E D -X- Figure 14.
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Cheetah 73LP Product Manual, Rev. C 7.0 33 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).
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34 Cheetah 73LP Product Manual, Rev. C Table 3: Read and write retry count maximum recovery times [1] Read retry count [1] Maximum recovery time per LBA (cumulative, msec) Write retry count Maximum recovery time per LBA (cumulative, msec) 0 77.7 0 35.8 1 89.7 1 53.7 2 304.9 2 59.7 3 328.9 3 113.6 4 364.6 4 227.1 5 412.5 5 (default) 268.9 6 520.0 7 532.0 8 555.9 9 609.7 10 684.1 11 (default) 1,542.2 [1] These values are subject to change.
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Cheetah 73LP Product Manual, Rev. C 8.0 Note. 35 Installation These drives are designed to be used only on single-ended (SE) or low voltage differential (LVD) busses. Do not install these drives on a high voltage differential (HVD) bus. The first thing to do when installing a drive is to set the drive SCSI ID and set up certain operating options.
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36 Cheetah 73LP Product Manual, Rev. C Drive Front Jumper Plug (enlarged to show detail) Pin 1 J6 [1] 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 [4] 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 [4] Host Alternate Usage Plug: Reserved Pins 11 9 7 5 3 1 8 Shipped with cover installed. Do not install jumpers; retain cover.
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Cheetah 73LP Product Manual, Rev. C 37 Drive HDA (rear view, PCB facing downward) Pin 1 J5 Pin 1 +5V Ground [1] [2] 4P [2] 68 Pin SCSI I/O Connector J1 SCSI ID = 0 3P 2P 1P J1-DC Power (default) PCB 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.
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38 Cheetah 73LP Product Manual, Rev. C J2 Jumper Positions Pin 1 RR S D MW P E E T E S EP DSS P Force single-ended bus mode Delay Motor Start [3] Enable Remote Motor Start Write Protect Parity Disable *Additional notes on these functions in section 8.1.2. Reserved J2 Jumper Plug (enlarged to show detail) Figure 17. J2 option select header 8.1.1 Notes for Figures 15, 16, and 17. [1] (applies to “LW” model only; reserved on “LC” model) Term.
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Cheetah 73LP Product Manual, Rev. C 8.1.2 Function description J2 jumper installation SE On Off ME Off On Off On On PD On Off RES Off TP1 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 SE jumper not installed.
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40 8.2 Cheetah 73LP 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.
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Cheetah 73LP Product Manual, Rev. C 8.4 41 Drive mounting When mounting the drive using the bottom holes (x-y plane in Figure 12) 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).
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Cheetah 73LP Product Manual, Rev. C 9.0 43 Interface requirements This section partially describes the interface requirements as implemented on the drives. 9.1 General description This section describes in essentially general terms the interface requirements supported by the Cheetah 73LP. 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.
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44 9.3 Cheetah 73LP Product Manual, Rev. C SCSI interface commands supported Table 5 following 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.
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Cheetah 73LP Product Manual, Rev. C 47 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, part number 75789509, Inquiry command section.
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48 9.3.2 Cheetah 73LP Product Manual, Rev. C 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 Changeable values. Default values are hard coded in the drive firmware that is stored in flash EPROM nonvolatile memory on the drive PCBA. Default values can be changed only by downloading a complete set of new firmware into the flash EPROM.
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Cheetah 73LP 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 for SCSI-2/SCSI-3 implementation (see the SCSI Interface Product Manual, part number 75789509). Definitions: DEF = Default value. Standard drives are shipped configured this way. CHG= Changeable bits; indicates if current and saved values are changeable. Note. Saved values for OEM drives are normally the same as the default values.
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Cheetah 73LP 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 75789509, for details.
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52 Cheetah 73LP Product Manual, Rev. C 9.5 Synchronous data transfer 9.5.1 Synchronous data transfer periods supported Table 10 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 75789509.
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Cheetah 73LP Product Manual, Rev. C 53 Pin 1P 2P 3P 4P J1 Pin 1 Power +12V +12V ret + 5V ret + 5V J5 Pin 1A J1-DC Power 4P 3P 2P 1P PCB J1-DC Power J5 Pin 1A Pin 1P J1 Pin 1 68 Pin SCSI I/O Connector J2 J6 Figure 19. LW model drive physical interface (68-pin J1 SCSI I/O connector) 80-pin SCSI I/O Connector Pin 1 J2 J6 Figure 20.
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54 Cheetah 73LP Product Manual, Rev. C 9.6.2 SCSI interface physical description The drive models described by this product manual support the physical interface requirements of the SCSI-3 Parallel Interface-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.
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Cheetah 73LP Product Manual, Rev. C 55 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.
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Cheetah 73LP Product Manual, Rev. C 57 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 (37.74) .840 ± .005 (21.34) Pos. 2 3.650 (92.71) Figure 22. Nonshielded 68 pin SCSI device connector used on LW drives .085 x 45° chamfer (2.16) typ Pos. 1 .767 (19.48) 1 .
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58 Cheetah 73LP Product Manual, Rev. C 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 Figure 23.
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Cheetah 73LP Product Manual, Rev. C Table 12: Note. 59 LW 68-conductor single-ended (SE) P cable signal/pin assignments [11] A minus sign preceding a signal name indicates that signal is active low.
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60 Cheetah 73LP Product Manual, Rev. C Table 13: Note. LW 68-conductor LVD P cable signal/pin assignments [11] A minus sign preceding a signal name indicates that signal is active low.
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Cheetah 73LP Product Manual, Rev. C Table 14: Note. 61 LC 80-pin single-ended (SE) I/O connector pin assignments [11] A minus sign preceding a signal name indicates that signal is active low.
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62 Cheetah 73LP Product Manual, Rev. C Table 15: Note. LC 80-pin single-ended (LVD) I/O connector pin assignments [11] A minus sign preceding a signal name indicates that signal is active low.
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Cheetah 73LP Product Manual, Rev. C 63 Notes [ ] for Tables 12 through 15. [1] [2] 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. [3] Connector contacts are on 0.050 inch (1.27 mm) centers.
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64 Cheetah 73LP Product Manual, Rev. C Output characteristics Each signal (Vs) driven by LVD interface drivers shall have the following output characteristics when measured at the disc drive connector: Steady state Low level output voltage* = –.95 V = < Vs = < –1.55 V (signal negation/logic 0) Steady state High level output voltage* = –.95 V = < Vs = < 1.55 V (signal assertion/logic 1) Differential voltage = +0.6 V minimum with common-mode voltage ranges 0.700 V = < Vcm = < 1.800 V.
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Cheetah 73LP Product Manual, Rev. C 9.7.1.1 65 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. These values are from the SPI-3 document. All device I/O lines must have equal to or less than 25 pf capacitance to ground, measured at the beginning of the stub.
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66 Cheetah 73LP Product Manual, Rev. C 9.10 Disc drive SCSI timing Table 17: Disc drive SCSI timing These values are not current Cheetah 73LP 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 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 4.5-3 3.
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Cheetah 73LP Product Manual, Rev. C Table 17: 67 Disc drive SCSI timing (Continued) These values are not current Cheetah 73LP 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.
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Cheetah 73LP 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: www.seagate.com/support/email/email_presales.html or DiscPresales@Seagate.com. Tape: www.seagate.com/support/email/email_tape_presales.html or Tape_Sales_Support@Seagate.com. Technical Support: Disc: www.seagate.
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70 Cheetah 73LP 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).
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Cheetah 73LP 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.
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Cheetah 73LP Product Manual, Rev.
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74 D daisy-chain 22, 54, 56 80 conductor 55 data correction 13 data transfer period 52 data transfer protocol 7 data transfer rate 9, 10 DC cable and connector 52 DC current 54 DC power 10, 13, 39, 52 DC power carrying conductor 55 DC power connector 52 DC power requirements 21 DC power source 55 dedicated landing zone 5 default 38, 39 default mode parameter 35 default value 48, 49 defect/error management 33 deferred error handling 51 delayed motor start option 21, 63 delayed start 39 diagnostics 22 differ
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Cheetah 73LP Product Manual, Rev. C HDA 5, 40, 41 head and disc assembly.
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76 O office environment 30 operating 27, 28, 30 operating option 35 operating parameter 48 operator intervention 13 option jumper 35 option jumper location 35 option select header 52 option select jumper 35 options 8 orientation 10, 28, 40 out-of-plane deflection 41 out-of-plane distortion 41 Output characteristics 64 P package size 28 package test specification 4 packaged 28 parameter rounding 51 parity 39 parity checking 39 parity error 39 partition or logical drive 35 PCBA 35, 38, 41, 48, 52, 54, 56 PC
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Cheetah 73LP Product Manual, Rev.
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78 W warranty 7, 19 wet bulb temperature 27 wide Ultra160 SCSI interface 5 WP jumper 39 wrap-around 11 write caching 11 write error 13 unrecoverable 13 write operation 11 write protect 39 write retry count 33 Z zero latency read 51 zoned bit recording (ZBR) 7 Cheetah 73LP Product Manual, Rev.
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Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100109943, Rev.