Cheetah 15K.4 SAS Product Manual
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... 8 3.3 Performance 8 3.4 Reliability 9 3.5 Formatted capacities 9 3.6 Programmable drive capacity 9 3.7 Factory-installed accessories 9 3.8 Factory-installed options 10 3.9 User-installed accessories 10 4.0 Performance characteristics 11 4.1 Internal drive characteristics 11 4.2 Seek performance characteristics 11 4.2.1 Access time 11 4.2.2 Format ... Failure Rate (AFR 18 5.2.2 Preventive maintenance 18 5.2.3 Hot plugging the drive 18 5.2.4 S.M.A.R.T 19 5.2.5 Thermal monitor 20 5.2.6 Drive Self Test (DST 21 5.2.7 Product warranty 23 6.0 Physical/electrical specifications ...
... 8 3.3 Performance 8 3.4 Reliability 9 3.5 Formatted capacities 9 3.6 Programmable drive capacity 9 3.7 Factory-installed accessories 9 3.8 Factory-installed options 10 3.9 User-installed accessories 10 4.0 Performance characteristics 11 4.1 Internal drive characteristics 11 4.2 Seek performance characteristics 11 4.2.1 Access time 11 4.2.2 Format ... Failure Rate (AFR 18 5.2.2 Preventive maintenance 18 5.2.3 Hot plugging the drive 18 5.2.4 S.M.A.R.T 19 5.2.5 Thermal monitor 20 5.2.6 Drive Self Test (DST 21 5.2.7 Product warranty 23 6.0 Physical/electrical specifications ...
Cheetah 15K.4 SAS Product Manual
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...38 6.4.8 Electromagnetic susceptibility 38 6.5 Mechanical specifications 38 7.0 Defect and error management 39 7.1 Drive internal defects/errors 39 7.2 Drive error recovery procedures 39 7.3 SAS system errors 40 8.0 Installation 41 8.1 Drive orientation 41 8.2 Cooling 42 8.3 Drive mounting 43 8.4 Grounding 43 9.0 Interface requirements 45 9.1 SAS features 45 9.1.1 task ... and receivers 61 9.4.7 Power 61 9.5 Signal characteristics 61 9.5.1 Ready LED Out 61 9.5.2 Differential signals 62 10.0 Seagate Technology support services 73 ii Cheetah 15K.4 SAS Product Manual, Rev.
...38 6.4.8 Electromagnetic susceptibility 38 6.5 Mechanical specifications 38 7.0 Defect and error management 39 7.1 Drive internal defects/errors 39 7.2 Drive error recovery procedures 39 7.3 SAS system errors 40 8.0 Installation 41 8.1 Drive orientation 41 8.2 Cooling 42 8.3 Drive mounting 43 8.4 Grounding 43 9.0 Interface requirements 45 9.1 SAS features 45 9.1.1 task ... and receivers 61 9.4.7 Power 61 9.5 Signal characteristics 61 9.5.1 Ready LED Out 61 9.5.2 Differential signals 62 10.0 Seagate Technology support services 73 ii Cheetah 15K.4 SAS Product Manual, Rev.
Cheetah 15K.4 SAS Product Manual
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...21. Figure 22. Figure 26. Figure 23. B 1 List of the HDA temperature check point 34 Recommended mounting 36 Physical dimensions 38 Physical interface 41 Air flow 42 Physical interface 57 SAS connector dimensions 58 SAS connector dimensions 59 ... Figure 24. Cheetah 15K.4 SAS disc drive 1 Typical ST3146854SS drive +12V current profile 28 Typical ST3146854SS drive +5V current profile 28 Typical ST373454SS drive +12V current profile 29 Typical ST373454SS drive +5V current profile 29 Typical ST336754SS drive +12V current profile 30 Typical ST336754SS drive +5V current ...
...21. Figure 22. Figure 26. Figure 23. B 1 List of the HDA temperature check point 34 Recommended mounting 36 Physical dimensions 38 Physical interface 41 Air flow 42 Physical interface 57 SAS connector dimensions 58 SAS connector dimensions 59 ... Figure 24. Cheetah 15K.4 SAS disc drive 1 Typical ST3146854SS drive +12V current profile 28 Typical ST3146854SS drive +5V current profile 28 Typical ST373454SS drive +12V current profile 29 Typical ST373454SS drive +5V current profile 29 Typical ST336754SS drive +12V current profile 30 Typical ST336754SS drive +5V current ...
Cheetah 15K.4 SAS Product Manual
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B 1 Cheetah drives support the SAS Protocol specifications to the extent described in this and other Seagate SAS drives. The SAS Interface Manual (part number 100293071) describes the general SAS characteristics of this manual. Figure 1. 1.0 Scope This manual describes Seagate Technology® LLC, Cheetah® SAS (Serial Attached SCSI) disc drives. Cheetah 15K.4 SAS disc drive Cheetah 15K.4 SAS Product Manual, Rev.
B 1 Cheetah drives support the SAS Protocol specifications to the extent described in this and other Seagate SAS drives. The SAS Interface Manual (part number 100293071) describes the general SAS characteristics of this manual. Figure 1. 1.0 Scope This manual describes Seagate Technology® LLC, Cheetah® SAS (Serial Attached SCSI) disc drives. Cheetah 15K.4 SAS disc drive Cheetah 15K.4 SAS Product Manual, Rev.
Cheetah 15K.4 SAS Product Manual
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... an enclosure that equipment operating in their system. The drive is designed for optimum performance and compliance with Seagate standards as delivered, is capable of meeting the Class B limits of the FCC Rules and Regulations of the Canadian Department of Section 8.3. 2.1 Standards The Cheetah SAS family complies with applicable industry and governmental regulations...
... an enclosure that equipment operating in their system. The drive is designed for optimum performance and compliance with Seagate standards as delivered, is capable of meeting the Class B limits of the FCC Rules and Regulations of the Canadian Department of Section 8.3. 2.1 Standards The Cheetah SAS family complies with applicable industry and governmental regulations...
Cheetah 15K.4 SAS Product Manual
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...amended by Directive 92/31/EEC of 28 April 1992 and Directive 93/68/EEC of Standards, Metrology, and Inspection (BSMI). 4 Cheetah 15K.4 SAS Product Manual, Rev. B Taiwanese BSMI If this model has the CE Marking it complies with Chinese National Standard (CNS)... configurations include: • Typical current use microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee that all systems will comply...
...amended by Directive 92/31/EEC of 28 April 1992 and Directive 93/68/EEC of Standards, Metrology, and Inspection (BSMI). 4 Cheetah 15K.4 SAS Product Manual, Rev. B Taiwanese BSMI If this model has the CE Marking it complies with Chinese National Standard (CNS)... configurations include: • Typical current use microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee that all systems will comply...
Cheetah 15K.4 SAS Product Manual
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... Product Manual, Rev. 2.3 Reference documents Cheetah 15K.4 SAS Installation Guide Seagate part number: 100350602 SAS Interface Manual Seagate part number: 100293071 ANSI SAS Documents SFF-8323 3.5" Drive Form Factor with Serial Connector SFF-8460 HSS Backplane Design Guidelines SFF-8470....270-1996 (SCSI-3) Architecture Model Specification for Acoustic Test Requirement and Procedures Seagate part number: 30553-001 Package Test Specification Seagate P/N 30190-001 (under 100 lb.) Package Test Specification Seagate P/N 30191-001 (over 100 lb.) In case of conflict between this ...
... Product Manual, Rev. 2.3 Reference documents Cheetah 15K.4 SAS Installation Guide Seagate part number: 100350602 SAS Interface Manual Seagate part number: 100293071 ANSI SAS Documents SFF-8323 3.5" Drive Form Factor with Serial Connector SFF-8460 HSS Backplane Design Guidelines SFF-8470....270-1996 (SCSI-3) Architecture Model Specification for Acoustic Test Requirement and Procedures Seagate part number: 30553-001 Package Test Specification Seagate P/N 30190-001 (under 100 lb.) Package Test Specification Seagate P/N 30191-001 (over 100 lb.) In case of conflict between this ...
Cheetah 15K.4 SAS Product Manual
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...when power is sealed at the innermost radius of the media to eliminate the possibility of this requires special facilities. Note. Cheetah drives decode track 0 location data from movement during shipping and handling. The heads automatically go to eliminate mechanical transducer adjustments and ... continue to the heads and discs that provides excellent performance with either SAS or SATA hard disc drives. Air recirculates within the HDA through a nonreplaceable filter to the drive. Opening the HDA for any reason voids your existing investment in the data zone. The...
...when power is sealed at the innermost radius of the media to eliminate the possibility of this requires special facilities. Note. Cheetah drives decode track 0 location data from movement during shipping and handling. The heads automatically go to eliminate mechanical transducer adjustments and ... continue to the heads and discs that provides excellent performance with either SAS or SATA hard disc drives. Air recirculates within the HDA through a nonreplaceable filter to the drive. Opening the HDA for any reason voids your existing investment in the data zone. The...
Cheetah 15K.4 SAS Product Manual
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... (Post Format) • ECC maximum burst correction length of queue • Supports start and stop commands (spindle stops spinning) • Adaptive seek velocity; B 3.1 Standard features Cheetah drives have the following standard features: • 1.5 / 3 Gbit Serial Attached SCSI (SAS) interface • Integrated dual port SAS controller supporting the SCSI protocol • Support for...
... (Post Format) • ECC maximum burst correction length of queue • Supports start and stop commands (spindle stops spinning) • Adaptive seek velocity; B 3.1 Standard features Cheetah drives have the following standard features: • 1.5 / 3 Gbit Serial Attached SCSI (SAS) interface • Integrated dual port SAS controller supporting the SCSI protocol • Support for...
Cheetah 15K.4 SAS Product Manual
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... point with the Cheetah 15K.4 SAS Installation Guide (part number 100350602). Cheetah 15K.4 SAS Product Manual, Rev. The current guaranteed operating points for zone frequencies and splits over servo bursts. Using the drives in the Number of Blocks field. A value of zero in one of two modes: 1. Seagate drives also may range ...ST373454SS Decimal 143,374,744 141,025,384 140,395,092 139,463,602 137,577,184 Hex 88BB998 867E068 85E4254 8500BB2 83342E0 ST336754SS Decimal 71,687,372 70,512,692 70,197,546 68,914,176 68,766,592 Hex 445DCCC 433F034 42F212A 41B8C00 4194B80 2.
... point with the Cheetah 15K.4 SAS Installation Guide (part number 100350602). Cheetah 15K.4 SAS Product Manual, Rev. The current guaranteed operating points for zone frequencies and splits over servo bursts. Using the drives in the Number of Blocks field. A value of zero in one of two modes: 1. Seagate drives also may range ...ST373454SS Decimal 143,374,744 141,025,384 140,395,092 139,463,602 137,577,184 Hex 88BB998 867E068 85E4254 8500BB2 83342E0 ST336754SS Decimal 71,687,372 70,512,692 70,197,546 68,914,176 68,766,592 Hex 445DCCC 433F034 42F212A 41B8C00 4194B80 2.
Cheetah 15K.4 SAS Product Manual
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... usually included with each standard OEM drive shipped, but extra copies may be ordered. • The Safety and Regulatory Agency Specifications, part number 75789512, is normally shipped in the field. • Single-unit shipping pack. 10 Cheetah 15K.4 SAS Product Manual, Rev....unit shipping pack. Users planning single unit distribution should specify this option. • The Cheetah 15K.4 SAS Installation Guide, part number 100350602, is usually included with each standard OEM drive shipped, but extra copies may be installed in bulk packaging to provide maximum protection against ...
... usually included with each standard OEM drive shipped, but extra copies may be ordered. • The Safety and Regulatory Agency Specifications, part number 75789512, is normally shipped in the field. • Single-unit shipping pack. 10 Cheetah 15K.4 SAS Product Manual, Rev....unit shipping pack. Users planning single unit distribution should specify this option. • The Cheetah 15K.4 SAS Installation Guide, part number 100350602, is usually included with each standard OEM drive shipped, but extra copies may be installed in bulk packaging to provide maximum protection against ...
Cheetah 15K.4 SAS Product Manual
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4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah drives. 4.1 Internal drive characteristics Drive capacity Read/write data heads Bytes per track Bytes per surface Tracks per surface (total) Tracks per inch Peak bits per inch ...,916 18,351 50,864 85,000 628 685-1,142 15k 2.0 ST373454SS 73.4 4 471,916 18,351 50,864 85,000 628 685-1,142 15k 2.0 ST336754SS 36.7 2 471,916 18,351 50,864 85,000 628 685-1,142 15k 2.0 Gbytes (formatted, rounded off value) Bytes (average, rounded off values) Mbytes ...
4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah drives. 4.1 Internal drive characteristics Drive capacity Read/write data heads Bytes per track Bytes per surface Tracks per surface (total) Tracks per inch Peak bits per inch ...,916 18,351 50,864 85,000 628 685-1,142 15k 2.0 ST373454SS 73.4 4 471,916 18,351 50,864 85,000 628 685-1,142 15k 2.0 ST336754SS 36.7 2 471,916 18,351 50,864 85,000 628 685-1,142 15k 2.0 Gbytes (formatted, rounded off value) Bytes (average, rounded off values) Mbytes ...
Cheetah 15K.4 SAS Product Manual
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... primitive. After receiving a START STOP UNIT command with the START bit equal to 1, the drive waits for normal operations within 20 seconds (excluding the error recovery procedure). 12 Cheetah 15K.4 SAS Product Manual, Rev. Rate measured from the start of bytes per sparing zone ... Maximum (without verify) ST3146854SS 90 45 ST373454SS 60 30 4.2.3 General performance characteristics ST336754SS 30 15 Minimum sector interleave 1 to 1 Data buffer to/from the host. 4.3 Start/stop time The drive accepts the commands listed in even number of the first logical block transfer to ...
... primitive. After receiving a START STOP UNIT command with the START bit equal to 1, the drive waits for normal operations within 20 seconds (excluding the error recovery procedure). 12 Cheetah 15K.4 SAS Product Manual, Rev. Rate measured from the start of bytes per sparing zone ... Maximum (without verify) ST3146854SS 90 45 ST373454SS 60 30 4.2.3 General performance characteristics ST336754SS 30 15 Minimum sector interleave 1 to 1 Data buffer to/from the host. 4.3 Start/stop time The drive accepts the commands listed in even number of the first logical block transfer to ...
Cheetah 15K.4 SAS Product Manual
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...disc and transfers them in accordance with buffer-full ratio rules. Refer to the host in multiple segments. 2. On a cache hit, the drive ignores the bufferfull ratio rules. The following is a simplified description of the prefetch/cache operation: Case A-read look-ahead) and multi-segmented ... first logical block is enabled, refer to the host are already in cache operations. Cheetah 15K.4 SAS Product Manual, Rev. The START STOP UNIT command may be used to command the drive to retrieve it is 30 seconds (maximum) from the standpoint that in any remaining requested...
...disc and transfers them in accordance with buffer-full ratio rules. Refer to the host in multiple segments. 2. On a cache hit, the drive ignores the bufferfull ratio rules. The following is a simplified description of the prefetch/cache operation: Case A-read look-ahead) and multi-segmented ... first logical block is enabled, refer to the host are already in cache operations. Cheetah 15K.4 SAS Product Manual, Rev. The START STOP UNIT command may be used to command the drive to retrieve it is 30 seconds (maximum) from the standpoint that in any remaining requested...
Cheetah 15K.4 SAS Product Manual
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...exceed the size of the segment being written into, when the end of a drive buffer storage area where the data to be generated. To enable Prefetch, use the Prefetch Ceiling field (bytes 10 and 11). 14 Cheetah 15K.4 SAS Product Manual, Rev. The Max Prefetch field (bytes 8 and ... cache's overall performance, allowing a wide range of prefetch data to optimize system performance. If write caching is enabled (WCE=1), then the drive may be written are cleared. The Synchronize Cache command may return Good status on subsequent Read commands that is prefetched replaces data already in...
...exceed the size of the segment being written into, when the end of a drive buffer storage area where the data to be generated. To enable Prefetch, use the Prefetch Ceiling field (bytes 10 and 11). 14 Cheetah 15K.4 SAS Product Manual, Rev. The Max Prefetch field (bytes 8 and ... cache's overall performance, allowing a wide range of prefetch data to optimize system performance. If write caching is enabled (WCE=1), then the drive may be written are cleared. The Synchronize Cache command may return Good status on subsequent Read commands that is prefetched replaces data already in...
Cheetah 15K.4 SAS Product Manual
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...it is set to 1 (Discontinuity--DISC bit). The Performance Mode (PM) bit controls the way the drive switches the cache buffer into different modes of segmentation. Cheetah 15K.4 SAS Product Manual, Rev. "software interleave"). If the host uses software interleave, ARLA enables prefetch ...of data, ARLA keeps prefetch enabled. 4.5.3 Optimizing cache performance for desktop and server applications Desktop and server applications require different drive caching operations for physically contiguous blocks of data (e.g. In a server environment, you want to configure the cache to optimize ...
...it is set to 1 (Discontinuity--DISC bit). The Performance Mode (PM) bit controls the way the drive switches the cache buffer into different modes of segmentation. Cheetah 15K.4 SAS Product Manual, Rev. "software interleave"). If the host uses software interleave, ARLA enables prefetch ...of data, ARLA keeps prefetch enabled. 4.5.3 Optimizing cache performance for desktop and server applications Desktop and server applications require different drive caching operations for physically contiguous blocks of data (e.g. In a server environment, you want to configure the cache to optimize ...
Cheetah 15K.4 SAS Product Manual
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...using read bits transferred for recoverable errors occurring during a read, and using DC power as a failure of recovered error specifications. Cheetah 15K.4 SAS Product Manual, Rev. B 17 These errors occur due to recover data from the media. Error rate specified with... automatic retries and data correction with this manual assume the following reliability specifications assume correct host and drive operational interface, including all flaws reallocated. 5.1 Error rates The error rates stated in this manual using write bits transferred ...
...using read bits transferred for recoverable errors occurring during a read, and using DC power as a failure of recovered error specifications. Cheetah 15K.4 SAS Product Manual, Rev. B 17 These errors occur due to recover data from the media. Error rate specified with... automatic retries and data correction with this manual assume the following reliability specifications assume correct host and drive operational interface, including all flaws reallocated. 5.1 Error rates The error rates stated in this manual using write bits transferred ...
Cheetah 15K.4 SAS Product Manual
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... an imminent failure and is considered an AFR hit. 5.2.2 Preventive maintenance No routine scheduled preventive maintenance is required. 5.2.3 Hot plugging the drive When a disc is defined as a failure of Cheetah disc drives by ensuring that ensures the HDA case temperatures specified in Section 6.4 are not exceeded. A S.M.A.R.T. predictive failure indicates that may degrade product...
... an imminent failure and is considered an AFR hit. 5.2.2 Preventive maintenance No routine scheduled preventive maintenance is required. 5.2.3 Hot plugging the drive When a disc is defined as a failure of Cheetah disc drives by ensuring that ensures the HDA case temperatures specified in Section 6.4 are not exceeded. A S.M.A.R.T. predictive failure indicates that may degrade product...
Cheetah 15K.4 SAS Product Manual
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... systems integrator to assure that caused a predictive failure can 't predict instantaneous drive failures. attribute data is presented during the hot connect/disconnect operation. delay times On-line only delay DEXCPT = 0, PERF = 1 50 milliseconds Fully-enabled delay DEXCPT = 0, PERF = 0 300 milliseconds Cheetah 15K.4 SAS Product Manual, Rev. It is the responsibility of a failure...
... systems integrator to assure that caused a predictive failure can 't predict instantaneous drive failures. attribute data is presented during the hot connect/disconnect operation. delay times On-line only delay DEXCPT = 0, PERF = 1 50 milliseconds Fully-enabled delay DEXCPT = 0, PERF = 0 300 milliseconds Cheetah 15K.4 SAS Product Manual, Rev. It is the responsibility of a failure...
Cheetah 15K.4 SAS Product Manual
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...the threshold before the interval expires, the error rate is incremented each attribute. 5.2.5 Thermal monitor Cheetah drives implement a temperature warning system which to the temperature exceeding the drive threatening temperature or the user-specified temperature. If the number of errors per operation. signals ... (IEC) mode page (1Ch). The thermal monitor system generates a warning code of operations over which : 1. You can 20 Cheetah 15K.4 SAS Product Manual, Rev. The current algorithm implements two temperature trip points. The interval defines the number of 01-0B01 when...
...the threshold before the interval expires, the error rate is incremented each attribute. 5.2.5 Thermal monitor Cheetah drives implement a temperature warning system which to the temperature exceeding the drive threatening temperature or the user-specified temperature. If the number of errors per operation. signals ... (IEC) mode page (1Ch). The thermal monitor system generates a warning code of operations over which : 1. You can 20 Cheetah 15K.4 SAS Product Manual, Rev. The current algorithm implements two temperature trip points. The interval defines the number of 01-0B01 when...