Product Manual
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... are either trademarks or registered trademarks of Seagate Technology LLC. Cheetah, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are registered trademarks or trademarks of Seagate Technology LLC. Seagate reserves the right to change, without written permission of their owners. No part of Seagate Technology LLC. G October 2001 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of this publication...
... are either trademarks or registered trademarks of Seagate Technology LLC. Cheetah, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are registered trademarks or trademarks of Seagate Technology LLC. Seagate reserves the right to change, without written permission of their owners. No part of Seagate Technology LLC. G October 2001 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of this publication...
Product Manual
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... characteristics 7 3.3 Performance 7 3.4 Reliability 7 3.5 Unformatted and formatted capacities 8 3.6 Programmable drive capacity 8 3.7 Factory installed accessories 8 3.8 Options (factory installed 8 4.0 Performance characteristics 9 4.1 Internal drive characteristics (transparent to user 9 4.2 SCSI performance characteristics (visible to user 9 4.2.1 Access ...life 15 5.2.5 Service philosophy 15 5.2.6 Service tools 15 5.2.7 Hot plugging Cheetah 18XL disc drives 15 5.2.8 S.M.A.R.T 16 5.2.9 Drive Self Test (DST 17 5.2.10 Product warranty 19 6.0 Physical/electrical specifications...
... characteristics 7 3.3 Performance 7 3.4 Reliability 7 3.5 Unformatted and formatted capacities 8 3.6 Programmable drive capacity 8 3.7 Factory installed accessories 8 3.8 Options (factory installed 8 4.0 Performance characteristics 9 4.1 Internal drive characteristics (transparent to user 9 4.2 SCSI performance characteristics (visible to user 9 4.2.1 Access ...life 15 5.2.5 Service philosophy 15 5.2.6 Service tools 15 5.2.7 Hot plugging Cheetah 18XL disc drives 15 5.2.8 S.M.A.R.T 16 5.2.9 Drive Self Test (DST 17 5.2.10 Product warranty 19 6.0 Physical/electrical specifications...
Product Manual
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...Cheetah 18XL Product Manual, Rev. G 6.4.2 Relative humidity 28 6.4.3 Effective altitude (sea level 28 6.4.4 Shock and vibration 29 6.4.5 Air cleanliness 31 6.4.6 Acoustics 31 6.4.7 Electromagnetic susceptibility 31 6.5 Mechanical specifications 32 7.0 Defect and error management 35 7.1 Drive internal defects 35 7.2 Drive error recovery procedures 35 7.3 SCSI systems errors 36 8.0 Installation 37 8.1 Drive... 67 9.8 Terminator requirements 69 9.9 Terminator power 69 9.10 Disc drive SCSI timing 70 9.11 Drive activity LED 71 10.0 Seagate Technology support services 73
...Cheetah 18XL Product Manual, Rev. G 6.4.2 Relative humidity 28 6.4.3 Effective altitude (sea level 28 6.4.4 Shock and vibration 29 6.4.5 Air cleanliness 31 6.4.6 Acoustics 31 6.4.7 Electromagnetic susceptibility 31 6.5 Mechanical specifications 32 7.0 Defect and error management 35 7.1 Drive internal defects 35 7.2 Drive error recovery procedures 35 7.3 SCSI systems errors 36 8.0 Installation 37 8.1 Drive... 67 9.8 Terminator requirements 69 9.9 Terminator power 69 9.10 Disc drive SCSI timing 70 9.11 Drive activity LED 71 10.0 Seagate Technology support services 73
Product Manual
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...output operations per second (LVD 26 Locations of Figures Cheetah 18XL family drive (ST318404LC shown 1 Cheetah 18XL family drive 6 Typical ST318404 drive +12 V current profile 23 Typical ST39204 drive +12 V current profile 23 Typical ST318404 drive +5 V current profile 24 TypicalST39204 drive +5 V current profile 24 ST318404 DC current and ...connector 57 SCSI daisy chain interface cabling for LW drives 60 Nonshielded 68 pin SCSI device connector used on LW drives 61 Nonshielded 80 pin SCSI "SCA-2" connector, used on LC drives 62 LVD output signals 68 Typical SE-LVD alternative ...
...output operations per second (LVD 26 Locations of Figures Cheetah 18XL family drive (ST318404LC shown 1 Cheetah 18XL family drive 6 Typical ST318404 drive +12 V current profile 23 Typical ST39204 drive +12 V current profile 23 Typical ST318404 drive +5 V current profile 24 TypicalST39204 drive +5 V current profile 24 ST318404 DC current and ...connector 57 SCSI daisy chain interface cabling for LW drives 60 Nonshielded 68 pin SCSI device connector used on LW drives 61 Nonshielded 80 pin SCSI "SCA-2" connector, used on LC drives 62 LVD output signals 68 Typical SE-LVD alternative ...
Product Manual
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... in Section 2.3. The SCSI Interface Product Manual, part number 75789509, describes general SCSI interface characteristics of Seagate drives. The SCSI Interface Product Manual references information from the documents listed in this product manual the reference to Cheetah 18XL models is referred to as described in the ANSI SCSI interface specifications to individual models...
... in Section 2.3. The SCSI Interface Product Manual, part number 75789509, describes general SCSI interface characteristics of Seagate drives. The SCSI Interface Product Manual references information from the documents listed in this product manual the reference to Cheetah 18XL models is referred to as described in the ANSI SCSI interface specifications to individual models...
Product Manual
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... the performance of this Manual and the Seagate SCSI Interface Product Manual, part number 75789509. The selected system represents the most popular characteristics for CE Marking and C-Tick Marking. The Cheetah 18XL disc drive is not required to the directives/standard(s),...microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse Although the test system with this Seagate model complies to meet the requirements of Section 8.4. 2.1 Standards The Cheetah 18XL family complies with the shields ...
... the performance of this Manual and the Seagate SCSI Interface Product Manual, part number 75789509. The selected system represents the most popular characteristics for CE Marking and C-Tick Marking. The Cheetah 18XL disc drive is not required to the directives/standard(s),...microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse Although the test system with this Seagate model complies to meet the requirements of Section 8.4. 2.1 Standards The Cheetah 18XL family complies with the shields ...
Product Manual
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... Requirements, and Procedures Seagate P/N 30553-001 In case of conflict between this document and any referenced document, this document takes precedence. 4 Cheetah 18XL Product Manual, Rev. This drive has been tested and complies with the Electromagnetic Interference/Electromagnetic Susceptibility (EMI/EMS) for Class B products. • EUT name (model numbers): ST318404LC, ST318404LW, ST39204LC, ST39204LW •...
... Requirements, and Procedures Seagate P/N 30553-001 In case of conflict between this document and any referenced document, this document takes precedence. 4 Cheetah 18XL Product Manual, Rev. This drive has been tested and complies with the Electromagnetic Interference/Electromagnetic Susceptibility (EMI/EMS) for Class B products. • EUT name (model numbers): ST318404LC, ST318404LW, ST39204LC, ST39204LW •...
Product Manual
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... SCSI interface specifications to Figure 2 for details and definitions. Cheetah 18XL drives use a dedicated landing zone at the innermost radius of Seagate SCSI drives. The drive automatically goes to eliminate the possibility of the I /O Data buffer connector pins data bus bits size (MB) ST318404LW 6 ST318404LC 6 ST39204LW 3 ST39204LC 3 Single-ended (SE) and low 68 voltage differential (LVD...
... SCSI interface specifications to Figure 2 for details and definitions. Cheetah 18XL drives use a dedicated landing zone at the innermost radius of Seagate SCSI drives. The drive automatically goes to eliminate the possibility of the I /O Data buffer connector pins data bus bits size (MB) ST318404LW 6 ST318404LC 6 ST39204LW 3 ST39204LC 3 Single-ended (SE) and low 68 voltage differential (LVD...
Product Manual
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G A high-performance actuator assembly with a low-inertia, balanced, patented, straight-arm design provides excellent performance with minimal power dissipation. Figure 2. Cheetah 18XL family drive 6 Cheetah 18XL Product Manual, Rev.
G A high-performance actuator assembly with a low-inertia, balanced, patented, straight-arm design provides excellent performance with minimal power dissipation. Figure 2. Cheetah 18XL family drive 6 Cheetah 18XL Product Manual, Rev.
Product Manual
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... Manual, Rev. G 7 3.1 Standard features The Cheetah 18XL family has the following standard features: • Integrated Ultra160 SCSI controller • Multimode SCSI drivers and receivers-single-ended (SE) and low...Reporting Technology (S.M.A.R.T.) • 5-year warranty The aluminum substrate is coated with a thin film magnetic material, overcoated with a proprietary protective layer for "LC" model drives • Drive Self Test (DST) 3.2 Media characteristics The media used on command (post format) • Enhanced ECC maximum burst correction length of 240 bits with a ...
... Manual, Rev. G 7 3.1 Standard features The Cheetah 18XL family has the following standard features: • Integrated Ultra160 SCSI controller • Multimode SCSI drivers and receivers-single-ended (SE) and low...Reporting Technology (S.M.A.R.T.) • 5-year warranty The aluminum substrate is coated with a thin film magnetic material, overcoated with a proprietary protective layer for "LC" model drives • Drive Self Test (DST) 3.2 Media characteristics The media used on command (post format) • Enhanced ECC maximum burst correction length of 240 bits with a ...
Product Manual
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... should specify this option. • The Cheetah 18XL Installation Guide, part number 75789507, is usually included with each standard OEM drive shipped, but extra copies may modify the data block size before shipping. 8 Cheetah 18XL Product Manual, Rev. The following table... shows the standard OEM model capacities: ST318404 ST39204 Formatted data block size 512 bytes/sector [1] 222EE55h (18.352 GB) [2] 111772Ah (9.176 GB) ...
... should specify this option. • The Cheetah 18XL Installation Guide, part number 75789507, is usually included with each standard OEM drive shipped, but extra copies may modify the data block size before shipping. 8 Cheetah 18XL Product Manual, Rev. The following table... shows the standard OEM model capacities: ST318404 ST39204 Formatted data block size 512 bytes/sector [1] 222EE55h (18.352 GB) [2] 111772Ah (9.176 GB) ...
Product Manual
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... 80 Mbytes/sec Ultra160 SCSI 5.0 to 80 Mbytes/sec 5.0 to all models of the Cheetah 18XL family unless otherwise specified. Typical [2] Including controller overhead (without disconnect) [1] [3] Drive level Read 5.4 0.8 10.2 Write msec 6.0 1.1 11.2 Not including controller overhead (without disconnect) [1] [3] Drive level Read 5.2 0.6 10.0 Write msec 5.8 0.9 11.0 4.2.2 Format command execution time (minutes) [1] Maximum (with...
... 80 Mbytes/sec Ultra160 SCSI 5.0 to 80 Mbytes/sec 5.0 to all models of the Cheetah 18XL family unless otherwise specified. Typical [2] Including controller overhead (without disconnect) [1] [3] Drive level Read 5.4 0.8 10.2 Write msec 6.0 1.1 11.2 Not including controller overhead (without disconnect) [1] [3] Drive level Read 5.2 0.6 10.0 Write msec 5.8 0.9 11.0 4.2.2 Format command execution time (minutes) [1] Maximum (with...
Product Manual
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...the commands listed in cache operations. All default cache and prefetch Mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are independent features from removal of power. If n (number of bytes per sector in Section 4.5.1 and 4.5.2. Stop time is disabled... prefetch and cache features the host sends the Mode Select command with a Read 10 Cheetah 18XL Product Manual, Rev. If a recoverable error condition is detected during the start sequence, the drive executes a recovery procedure which data is read look-ahead) and multi-segmented cache control...
...the commands listed in cache operations. All default cache and prefetch Mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are independent features from removal of power. If n (number of bytes per sector in Section 4.5.1 and 4.5.2. Stop time is disabled... prefetch and cache features the host sends the Mode Select command with a Read 10 Cheetah 18XL Product Manual, Rev. If a recoverable error condition is detected during the start sequence, the drive executes a recovery procedure which data is read look-ahead) and multi-segmented cache control...
Product Manual
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...operations (disregarding Prefetch operation for the requested read caching is enabled (RCD=0), then data written to be written to the medium. The drive supports operation of selecting the segment number specification. G 11 command is retrieved from this point. On a cache miss, all subsequent ...on a write command after the data has been transferred into a segment, and from this point. However, the drive does not overwrite data that makes use in multiple segments. 2. Cheetah 18XL Product Manual, Rev. When a write command is issued, if RCD=0, the cache is used , but...
...operations (disregarding Prefetch operation for the requested read caching is enabled (RCD=0), then data written to be written to the medium. The drive supports operation of selecting the segment number specification. G 11 command is retrieved from this point. On a cache miss, all subsequent ...on a write command after the data has been transferred into a segment, and from this point. However, the drive does not overwrite data that makes use in multiple segments. 2. Cheetah 18XL Product Manual, Rev. When a write command is issued, if RCD=0, the cache is used , but...
Product Manual
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... prefetch (read operations request contiguous blocks of prefetch data to optimize system performance. DRA bit = 0 enables prefetch. During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if the Discontinuity (DISC) bit is set to write all data received from previous write commands ...is enabled, data in some buffer segment(s), the host can be used to force the drive to one in the buffer is disabled). Upon completion of Mode parameters page 08h. 12 Cheetah 18XL Product Manual, Rev. G The Synchronize Cache command may be retrieved and stored in ...
... prefetch (read operations request contiguous blocks of prefetch data to optimize system performance. DRA bit = 0 enables prefetch. During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if the Discontinuity (DISC) bit is set to write all data received from previous write commands ...is enabled, data in some buffer segment(s), the host can be used to force the drive to one in the buffer is disabled). Upon completion of Mode parameters page 08h. 12 Cheetah 18XL Product Manual, Rev. G The Synchronize Cache command may be retrieved and stored in ...
Product Manual
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... voltages, environmental requirements and drive mounting constraints (see Section 6.2). • The drive has been formatted with the SCSI FORMAT command. • Errors caused by normal drive or system recovery procedures without operator interven- Cheetah 18XL Product Manual, Rev.... Assume random data. 5.1.1 Environmental interference When evaluating systems operation under conditions of Electromagnetic Interference (EMI), the performance of the drive within two attempts at writing the record with a read verify after each attempt (excluding media defects). 5.1.4 Seek errors A...
... voltages, environmental requirements and drive mounting constraints (see Section 6.2). • The drive has been formatted with the SCSI FORMAT command. • Errors caused by normal drive or system recovery procedures without operator interven- Cheetah 18XL Product Manual, Rev.... Assume random data. 5.1.1 Environmental interference When evaluating systems operation under conditions of Electromagnetic Interference (EMI), the performance of the drive within two attempts at writing the record with a read verify after each attempt (excluding media defects). 5.1.4 Seek errors A...
Product Manual
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14 Cheetah 18XL Product Manual, Rev. Short-term excursions up hours per year. • Operations at nominal voltages. • Systems will vary. Each disc drive shall have accumulated at case temperatures above the values shown in the Sense Key. MTBF is : • 720 power... to ensure the case temperatures specified in Section 6.4.1 are not exceeded. This is calculated as failures for a minimum period of Cheetah 18XL disc drives by drive malfunction. Refer to ensure the case temperatures specified in Section 6.4.1 are counted • Based on 1,200,000 MTBF and 720...
14 Cheetah 18XL Product Manual, Rev. Short-term excursions up hours per year. • Operations at nominal voltages. • Systems will vary. Each disc drive shall have accumulated at case temperatures above the values shown in the Sense Key. MTBF is : • 720 power... to ensure the case temperatures specified in Section 6.4.1 are not exceeded. This is calculated as failures for a minimum period of Cheetah 18XL disc drives by drive malfunction. Refer to ensure the case temperatures specified in Section 6.4.1 are counted • Based on 1,200,000 MTBF and 720...
Product Manual
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... connections prior to hot plug. All I /O process allowed during the hot connect/disconnect operation. If the device being changed Seagate Cheetah 18XL disc drives support all devices on the SCSI bus. Following the insertion of any device signal contact to perform the SCSI Bus Reset could... result in the field is currently operating in the drive. 5.2.7 Hot plugging Cheetah 18XL disc drives The ANSI SPI-3 (T10/1302D) document defines the physical requirements for removal and insertion of SCSI devices on the ...
... connections prior to hot plug. All I /O process allowed during the hot connect/disconnect operation. If the device being changed Seagate Cheetah 18XL disc drives support all devices on the SCSI bus. Following the insertion of any device signal contact to perform the SCSI Bus Reset could... result in the field is currently operating in the drive. 5.2.7 Hot plugging Cheetah 18XL disc drives The ANSI SPI-3 (T10/1302D) document defines the physical requirements for removal and insertion of SCSI devices on the ...
Product Manual
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...will not perform off-line functions. Setting the DEXCPT bit will collect on the SCSI bus. functions. will disable all S.M.A.R.T. The drive can be unacceptable. monitors the rate at which to enable or disable the S.M.A.R.T. S.M.A.R.T. The firmware will occur. will reset the timer...and data logging process will monitor specific attributes for the current interval. 16 Cheetah 18XL Product Manual, Rev. S.M.A.R.T. is to set of failure conditions in the operating performance of the drive, and the thresholds are logged and compared to monitor a specific set ...
...will not perform off-line functions. Setting the DEXCPT bit will collect on the SCSI bus. functions. will disable all S.M.A.R.T. The drive can be unacceptable. monitors the rate at which to enable or disable the S.M.A.R.T. S.M.A.R.T. The firmware will occur. will reset the timer...and data logging process will monitor specific attributes for the current interval. 16 Cheetah 18XL Product Manual, Rev. S.M.A.R.T. is to set of failure conditions in the operating performance of the drive, and the thresholds are logged and compared to monitor a specific set ...
Product Manual
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...enabled during DST. Recovered errors will be returned to exceed zero) whenever the error rate is a technology designed to as a failed drive. Cheetah 18XL Product Manual, Rev. In either of times the error rate for each attribute is signaled. There are exhausted. The following conditions:...two test coverage options implemented in process of retries required to test the drive more stringently, and the number of the drive at a system level. It is unacceptable and decremented (not to Seagate as the Failure History Counter. Short text The most thorough option is...
...enabled during DST. Recovered errors will be returned to exceed zero) whenever the error rate is a technology designed to as a failed drive. Cheetah 18XL Product Manual, Rev. In either of times the error rate for each attribute is signaled. There are exhausted. The following conditions:...two test coverage options implemented in process of retries required to test the drive more stringently, and the number of the drive at a system level. It is unacceptable and decremented (not to Seagate as the Failure History Counter. Short text The most thorough option is...