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Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology, Inc. Cheetah, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either trademarks or registered trade- marks of Seagate Technology, Inc. or one of its subsidiaries. All other trademarks or registered trade- marks are the property of their respective owners.
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Revision status summary sheet Revision Date Writer/Engineer Sheets Affected Rev. A 08/27/1999 L. Newman/G. Velaski 1/1, v thru viii, 1-77. Rev. B 03/24/2000 L. Newman/G. Velaski All. Notice. Product Manual 83329476 is Volume 1 of a two volume document with the SCSI Interface information in the Volume 2 SCSI Interface Product Manual, part number 75789509.
3 interface specifications to the extent described in this manual. The SCSI Interface Product Manual (part num- ber 75789509) describes general SCSI interface characteristics of this and other families of Seagate drives. From this point on in this product manual the reference to Cheetah 36LP models is referred to as “the drive”...
Mounting by bottom holes must meet the requirements of Section 8.4. Standards The Cheetah 36LP family complies with Seagate standards as noted in the appropriate sections of this Manual and the Seagate SCSI Interface Product Manual, part number 75789509 (Vol. 2).
T10/1302D SPI-3 (SCSI Parallel Interface version 3) SFF-8046 Specification for 80-pin connector Package Test Specification Seagate P/N 30190-001 (under 100 lb.) Package Test Specification Seagate P/N 30191-001 (over 100 lb.) Specification, Acoustic Test Requirements, and Procedures Seagate P/N 30553-001 In case of conflict between this document and any referenced document, this document takes precedence.
Cheetah 36LP family of drives, and the SCSI Interface Product Manual (volume 2), part number 75789509, which describes the general interface characteristics of this and other families of Seagate SCSI drives. The drive’s interface supports multiple initiators, disconnect/reconnect, self-configuring host software, and automatic features that relieve the host from the necessity of knowing the physical characteristics of the targets (logical block addressing is used).
Cheetah 36LP Product Manual, Rev. B Standard features The Cheetah 36LP family has the following standard features: • Integrated Ultra160 SCSI controller • Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD) • 16 bit I/O data bus •...
Cheetah 36LP Product Manual, Rev. B Unformatted and formatted capacities Formatted capacity depends on the number of spare reallocation sectors reserved and the number of bytes per sector. The following table shows the standard OEM model capacities: Formatted data block size 512 bytes/sector [1] Unformatted ST336704...
Cheetah 36LP Product Manual, Rev. B Sector Sizes: Default 512 byte user data blocks Variable 512 to 4,096 bytes per sector in even number of bytes per sector. If n (number of bytes per sector) is odd, then n-1 will be used. Read/write consecutive sectors on a track Flaw reallocation performance impact (for flaws reallocated at format time using Negligible...
Cheetah 36LP Product Manual, Rev. B byte 2, bit 0. See SCSI Interface Product Manual, part number 75789509), data requested by the host with a Read command is retrieved from the buffer (if it is there), before any disc access is initiated. If cache operation is not enabled, the buffer (still segmented with required number of segments) is still used, but only as circular buffer segments during disc medium read operations (disregarding Prefetch operation for the moment).
Cheetah 36LP Product Manual, Rev. B The Synchronize Cache command may be used to force the drive to write all cached write data to the medium. Upon completion of a Synchronize Cache command, all data received from previous write commands will have been written to the medium.
Cheetah 36LP Product Manual, Rev. B Reliability specifications The following reliability specifications assume correct host/drive operational interface, including all interface timings, power supply voltages, environmental requirements and drive mounting constraints (see Section 8.4). Seek Errors Less than 10 in 10 seeks Read Error Rates [1] Recovered Data...
Cheetah 36LP Product Manual, Rev. B 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.
Case 4 - Current I/O process allowed during insertion or removal, except on the device being changed Seagate Cheetah 36LP disc drives support all four hot plugging cases. Provision shall be made by the system such that a device being inserted makes power and ground connections prior to the connection of any device signal contact to the bus.
Cheetah 36LP Product Manual, Rev. B 5.2.8 S.M.A.R.T. S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize conditions that indicate a drive failure and is designed to provide sufficient warning of a failure to allow data back-up before an actual failure occurs.
DST. It is the responsibility of the host application to determine the “not ready” cause. While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.
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To invoke DST, submit the Send Diagnostic command with the appropriate Function Code (001b for the short test or 010b for the extended test) in bytes 1, bits 5, 6, and 7. Refer to the Seagate SCSI Interface Manual, Vol- ume 3, part number 75789509 for additional information about invoking DST.
Seagate’s option and at no charge to customer, if returned by customer at cus- tomer’s expense to Seagate’s designated facility in accordance with Seagate’s warranty procedure. Seagate will pay for transporting the repair or replacement item to customer.
Cheetah 36LP Product Manual, Rev. B Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the Cheetah 36LP drive. AC power requirements None. DC power requirements The voltage and current requirements for a single drive are shown in the following table. Values indicated apply at the drive power connector.
Cheetah 36LP Product Manual, Rev. B 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 con- nector.
Cheetah 36LP Product Manual, Rev. B +12 Volt Current during spindle start – Typical Amperes AC Envelope DC average of waveform T0 T1 T3 T4 Seconds Figure 3. Typical ST336704 drive +12 V current profile +5 Volt Current during spindle start – Typical Amperes Nominal (average) DC curve AC Envelope Seconds...
Cheetah 36LP Product Manual, Rev. B Power dissipation For drives using single-ended interface circuits, typical power dissipation under idle conditions is 11.51 watts (39.27 BTUs per hour). For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 11.86 watts (40.47 BTUs per hour).
Cheetah 36LP Product Manual, Rev. B 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).
Non-operating –40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive. HDA Temp.
36 in (914 mm) 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...
There will not be any discrete tones more than 10 dB above the masking noise on typical drives when mea- sured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive.
Cheetah 36LP Product Manual, Rev. B Notes: Mounting holes are 6-32 UNC 2B, three -Z- -X- 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.
Cheetah 36LP Product Manual, Rev. B 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).
Cheetah 36LP Product Manual, Rev. B Table 4: Read and write retry count maximum recovery times [1] Read retry Maximum recovery time per Write retry Maximum recovery time per count [1] LBA (cumulative, msec) count LBA (cumulative, msec) 77.6 35.8 89.6 53.7 304.5...
J2, J5-Auxiliary and J6. Suggested part number for the jumpers used on J2 is Molex 52747-0211 (Seagate part number 77679052). A bag with the two jumper plug types is shipped with the standard OEM drives.
Cheetah 36LP Product Manual, Rev. B Drive Front Jumper Plug (enlarged to show detail) Pin 1 Reserved A 2 A 1 A 0 SCSI ID = 0 (default) SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6...
Cheetah 36LP Product Manual, Rev. B Pin 1 Jumper Positions Force single-ended bus mode Delay Motor Start Enable Remote Motor Start Write Protect Parity Disable Reserved Additional notes on these (applies to “LW” model only; Term. Power to SCSI Bus functions in section 8.1.2.
Cheetah 36LP Product Manual, Rev. B 8.1.2 Function description jumper installation Jumper function description Forces drive to use single-ended I/O drivers/receivers only. Drive can operate on the interface in low voltage differential mode or single-ended, depend- ing on the voltage state of the I/O “DIFFSNS” line. Default is SE jumper not installed. Spindle starts immediately after power up - Default setting.
Cheetah 36LP Product Manual, Rev. B Drive orientation The balanced rotary arm actuator design of the drive allows it to be mounted in any orientation. All drive perfor- mance characterization, however, has been done with the drive in horizontal (discs level) and vertical (drive on its side) orientations, and these are the two preferred mounting orientations.
(F) is applied to the fourth point. Note. Before mounting the drive in any kind of 3.5-inch to 5.25-inch adapter frame, verify with Seagate Tech- nology that the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame.
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. Seagate declares that the drives operate in accordance with the appropriate ANSI Standards referenced in various places herein, with exceptions as noted herein or in the Seagate SCSI Interface Product Manual, part number 75789509.
Cheetah 36LP Product Manual, Rev. B SCSI interface commands supported Table 6 following lists the SCSI interface commands that are supported by the drive. Cheetah 36LP Family drives can be changed back and forth between SCSI-1, SCSI-2, and SCSI-3 (Ultra160) modes using the Change Definition Command.
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Cheetah 36LP Product Manual, Rev. B Table 6: Commands supported by Cheetah 36LP family drive (Continued) Command Supported by Command name code SCSI-2/3 Mode sense Y [2] Caching parameters page (08h) Control mode page (0Ah) Disconnect/reconnect (02h) Error recovery page (01h) Format page (03h) Information exceptions control page (1Ch) Notch and Partition Page (0Ch)
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Cheetah 36LP Product Manual, Rev. B Table 6: Commands supported by Cheetah 36LP family drive (Continued) Command Supported by Command name code SCSI-2/3 Supported diagnostics pages (00h) Translate page (40h) Set limits Start unit/stop unit (spindle ceases rotating) (1Ch) Synchronize cache Test unit ready Verify BYTCHK bit...
S# Eight ASCII digits representing the eight digits of the product serial number. Bytes 18 through 26 reflect model of drive. Shown here are hex values for Model ST336704LW. For “LW” models, bytes 24, 25 and 26 are 4C 57 20.
Cheetah 36LP Product Manual, Rev. B 9.3.2 Mode Sense data The Mode Sense command provides a means for the drive to report its operating parameters to the initiator. The drive maintains four sets of Mode parameters, Default values, Saved values, Current values and Change- able values.
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Cheetah 36LP Product Manual, Rev. B The following tables list the values of the data bytes returned by the drive in response to the Mode Sense com- mand pages for SCSI Ultra160 implementation (see the SCSI Interface Product Manual, part number 75789509).
Cheetah 36LP Product Manual, Rev. B 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.
9.6.1 DC cable and connector ST336704LW/LWV drives receive DC power through a 4 pin connector (see Figure 17 for pin assignment) mounted at the rear of the main PCBA. Recommended part numbers of the mating connector are listed below, but equivalent parts may be used.
Cheetah 36LP Product Manual, Rev. B LC/LCV model drives receive power through the 80-pin I/O connector. See Tables 15 and 16. Power +12V +12V ret + 5V ret + 5V Pin 1 Pin 1A J1-DC Power J1-DC Power Pin 1P Pin 1A Pin 1 68 Pin...
Cheetah 36LP Product Manual, Rev. B 9.6.2 SCSI interface physical description The drive models described by this product manual support the physical interface requirements of the Ultra160 SCSI Parallel Interface-3 (SPI-3) standards as defined in American National Standard document T10/1302D revision 14, and operate compatibly at the interface with devices that support earlier SCSI-2 and SCSI-3 stan- dards.
Cheetah 36LP Product Manual, Rev. B 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 36LP Product Manual, Rev. B 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 connec- tor for SCSI Disk Drives.”...
Cheetah 36LP Product Manual, Rev. B Recommended mating 80-position PCBA mount connectors: Straight-in connector Hot plug version (with ground guide-pin) Seagate P/N: 77678703 Amp US P/N: 2-557103-1 787311-1 with polarization 94-0680-02-1 Amp US P/N: 2-557103-2 787311-2 without polarization 94-0680-02-2 Amp Japan P/N: 5-175475-9...
Cheetah 36LP Product Manual, Rev. B 7.00 (.276) 12.70 End View (.500) Grounding Pins 2.15 0.10 2 places 57.87 (2.278) –0.15 + .000 – .006 0.15 M Y M C L of Datum Y –Y– Front View Pin 1 62.15 0.15 (2.447) ( .005)
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Cheetah 36LP Product Manual, Rev. B Table 13: LW 68-conductor single-ended (SE) P cable signal/pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low. Connector Connector Cable conductor Signal contact contact Signal number [2] name [1] number [3] number [3]...
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Cheetah 36LP Product Manual, Rev. B Table 14: LW 68-conductor LVD P cable signal/pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low. Connector Connector Cable conductor Signal contact contact Signal number [2] name [1] number [3] number [3]...
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Cheetah 36LP Product Manual, Rev. B Table 15: LC 80-pin single-ended (SE) I/O connector pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low. Connector Signal contact Signal Contact name [1] number [3] number [3] name[1] 12 V CHARGE...
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Cheetah 36LP Product Manual, Rev. B Table 16: LC 80-pin single-ended (LVD) I/O connector pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low. Connector Signal contact Signal Contact name [1] number [3] number [3] name[1] 12 V CHARGE...
Cheetah 36LP Product Manual, Rev. B Notes [ ] for Tables 13 through 16. See Section 9.6.4.1 for detailed electrical characteristics of these signals. The conductor number refers to the conductor position when using 0.025-inch (0.635 mm) centerline flat ribbon cable. Other cables types may be used to implement equivalent contact assignments. Connector contacts are on 0.050 inch (1.27 mm) centers.
Cheetah 36LP Product Manual, Rev. B Table 17: Cable characteristics for single-ended circuits Transmission line impedance Maximum number of Maximum cable I/O transfer rate devices on the bus length allowed REQ/ACK Other signals <10M transfers/s 16 (wide SCSI bus) 6 meters (19.7 ft) 90 + 6 Ohms 90 + 10 Ohms <20M transfers/s...
Cheetah 36LP Product Manual, Rev. B Table 18: Disc drive SCSI timing (Continued) Waveform Waveform Description symbol [1] table [1] Typical timing Data In Byte Transfer (parameter) 4.5-12 0.04 s Data Out Byte Transfer (parameter) 4.5-13 0.04 s Next Data In Byte Access (parameter) 4.5-12 0.12 s Next Data Out Byte Access (parameter)
FAX 24 hours daily. This service is available worldwide. Presales Support Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system. Disc: 1-877-271-3285; Tape: 1-800-626-6637.
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USA/Canada/Latin America Support Services Presales Support Disc: 1-877-271-3285 or +1-405-936-1210 FAX: +1-405-936-1683 Tape: 1-800-626-6637 or +1-714-641-2500 FAX: +1-714-641-2410 Technical Support (SeaFONE) 1-800-SEAGATE or +1-405-936-1234 (for specific product phone number) FAX: Disc: +1-405-936-1685; Tape: +1-405-936-1683 SeaFAX 1-800-SEAGATE SeaTDD +1-405-936-1687 SeaBOARD Disc: +1-405-936-1600; Tape: +1-405-936-1630...
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Cheetah 36LP Product Manual, Rev. B Africa/Middle East Support Services For presales, technical support, warranty service and FAX services in Africa and the Middle East, dial our European call center at +31-20-316-7222 from 8:30 a.m. to 5:00 p.m. (European central time) Monday through Friday, or send a FAX to +31-20-653-3513.
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Cheetah 36LP Product Manual, Rev. B DC power 10 ECC correction capability 7 DC power carrying conductor 54 electrical characteristics 51 DC power connector 51 electromagnetic compatibility 3 DC power requirements 21 electromagnetic interference (EMI) 13 DC power source 54 electromagnetic susceptibility 29 dedicated landing zone 5 embedded servo 7...
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Cheetah 36LP Product Manual, Rev. B high level format 35 mating flat cable connector 54 host 12 maximum current requirements 22 host adapter 35 maximum operating current 21 adapter/initiator 56 maximum starting current 21 host backplane wiring 53 ME jumper 39 host equipment 41 mean time between failure.
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SCSI systems error 34 SCSI systems error consideration 33 technical support services 69 SCSI systems error management 34 temperature 10 SE 63 ambient 25 Seagate support service 35 case 25 sector 11 gradient 25 sector interleave 9 non-operating 26 sector size 8...
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