Cheetah 15K.4 SAS Product Manual
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... 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 command execution time (minutes 12 4.2.3 General performance characteristics 12 4.3 Start/stop time 12 4.4 Prefetch/multi-segmented cache control 13 4.5 Cache operation 13 4.5.1 Caching write data 14 4.5.2 Prefetch operation 14 4.5.3 Optimizing cache performance for desktop and server applications 15 5.0 Reliability specifications 17 5.1 Error rates 17...
... 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 command execution time (minutes 12 4.2.3 General performance characteristics 12 4.3 Start/stop time 12 4.4 Prefetch/multi-segmented cache control 13 4.5 Cache operation 13 4.5.1 Caching write data 14 4.5.2 Prefetch operation 14 4.5.3 Optimizing cache performance for desktop and server applications 15 5.0 Reliability specifications 17 5.1 Error rates 17...
Cheetah 15K.4 SAS Product Manual
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... 9.1.2 task management responses 45 9.2 Dual port support 46 9.3 SCSI commands supported 47 9.3.1 Inquiry data 51 9.3.2 Mode Sense data 51 9.4 Miscellaneous operating features and conditions 56 9.4.1 SAS physical interface 57 9.4.2 Physical characteristics 59 9.4.3 Connector requirements 59 9.4.4 Electrical description 60 9.4.5 Pin descriptions 60 9.4.6 SAS transmitters 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. B
... 9.1.2 task management responses 45 9.2 Dual port support 46 9.3 SCSI commands supported 47 9.3.1 Inquiry data 51 9.3.2 Mode Sense data 51 9.4 Miscellaneous operating features and conditions 56 9.4.1 SAS physical interface 57 9.4.2 Physical characteristics 59 9.4.3 Connector requirements 59 9.4.4 Electrical description 60 9.4.5 Pin descriptions 60 9.4.6 SAS transmitters 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. B
Cheetah 15K.4 SAS Product Manual
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... to the drive. Note. The SAS connectors, cables and electrical interface are random access storage devices designed to service items in the sealed enclosure (heads, media, actuator, etc.) as described in the ANSI specifications, this document, and the SAS Interface Manual (part number 100293071) which describes the general interface characteristics of destroying or degrading data by landing in SCSI while gaining a 3Gb/s serial data transfer rate. Cheetah 15K.4 SAS Product Manual, Rev. Cheetah drives are compatible with Serial ATA (SATA), giving future users the...
... to the drive. Note. The SAS connectors, cables and electrical interface are random access storage devices designed to service items in the sealed enclosure (heads, media, actuator, etc.) as described in the ANSI specifications, this document, and the SAS Interface Manual (part number 100293071) which describes the general interface characteristics of destroying or degrading data by landing in SCSI while gaining a 3Gb/s serial data transfer rate. Cheetah 15K.4 SAS Product Manual, Rev. Cheetah drives are compatible with Serial ATA (SATA), giving future users the...
Cheetah 15K.4 SAS Product Manual
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...; Adaptive seek velocity; 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 improved durability and environmental protection. 3.3 Performance • Programmable multi-segmentable cache buffer • 300 Mbytes/sec maximum instantaneous data transfers. • 15k RPM spindle. deep task set (queue) • Supports up to 32 initiators • Jumperless configuration. • User-selectable logical...
...; Adaptive seek velocity; 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 improved durability and environmental protection. 3.3 Performance • Programmable multi-segmentable cache buffer • 300 Mbytes/sec maximum instantaneous data transfers. • 15k RPM spindle. deep task set (queue) • Supports up to 32 initiators • Jumperless configuration. • User-selectable logical...
Cheetah 15K.4 SAS Product Manual
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... drive capacity Using the Mode Select command, the drive can change the capacity it ensures a stable operating point with the Cheetah 15K.4 SAS Installation Guide (part number 100350602). Seagate drives also may modify the data block size before issuing a format command and obtain different formatted capacities than the maximum number of LBAs in the Number of Blocks field changes the total drive capacity to the value in this product are formatted to 1.3 percent above the guaranteed capacities listed above. 3.4 Reliability • Annualized Failure Rate (AFR...
... drive capacity Using the Mode Select command, the drive can change the capacity it ensures a stable operating point with the Cheetah 15K.4 SAS Installation Guide (part number 100350602). Seagate drives also may modify the data block size before issuing a format command and obtain different formatted capacities than the maximum number of LBAs in the Number of Blocks field changes the total drive capacity to the value in this product are formatted to 1.3 percent above the guaranteed capacities listed above. 3.4 Reliability • Annualized Failure Rate (AFR...
Cheetah 15K.4 SAS Product Manual
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... a prefetch hit, not a cache operation hit. The new data is cached for bit 4. To enable Prefetch, use the Prefetch Ceiling field (bytes 10 and 11). 14 Cheetah 15K.4 SAS Product Manual, Rev. During a prefetch, the drive crosses a cylinder boundary to fetch data only if the Discontinuity (DISC) bit is set to 1 in bit 4 of byte 2 of prefetch data to optimize system performance. Sending a size specification using the Mode Select command (bytes 14 and...
... a prefetch hit, not a cache operation hit. The new data is cached for bit 4. To enable Prefetch, use the Prefetch Ceiling field (bytes 10 and 11). 14 Cheetah 15K.4 SAS Product Manual, Rev. During a prefetch, the drive crosses a cylinder boundary to fetch data only if the Discontinuity (DISC) bit is set to 1 in bit 4 of byte 2 of prefetch data to optimize system performance. Sending a size specification using the Mode Select command (bytes 14 and...
Cheetah 15K.4 SAS Product Manual
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... data errors resulting from the media. Seek error rate: Read Error Rates1 Recovered Data Unrecovered Data Miscorrected Data Interface error rate: Annualized Failure Rate (AFR): Service Life Preventive maintenance: Less than 10 errors in 108 seeks Less than 10 errors in 1012 bits transferred (OEM default settings) Less than 1 sector in 1015 bits transferred Less than 1 sector in 1021 bits transferred Less than 1 error in this manual assume the following reliability specifications assume correct host and drive operational interface, including all interface timings, power supply voltages...
... data errors resulting from the media. Seek error rate: Read Error Rates1 Recovered Data Unrecovered Data Miscorrected Data Interface error rate: Annualized Failure Rate (AFR): Service Life Preventive maintenance: Less than 10 errors in 108 seeks Less than 10 errors in 1012 bits transferred (OEM default settings) Less than 1 sector in 1015 bits transferred Less than 1 sector in 1021 bits transferred Less than 1 error in this manual assume the following reliability specifications assume correct host and drive operational interface, including all interface timings, power supply voltages...
Cheetah 15K.4 SAS Product Manual
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... drive interfaces. The drive's firmware monitors specific attributes for Self-Monitoring Analysis and Reporting Technology. Forcing S.M.A.R.T. It is the responsibility of S.M.A.R.T. Caution. This time is saved to save the data by the DEXCPT and PERF bits on -line data as the drive performs normal read and write operations. Setting the DEXCPT bit disables all S.M.A.R.T. functions. You can be in "On-line Mode Only" and will not perform...
... drive interfaces. The drive's firmware monitors specific attributes for Self-Monitoring Analysis and Reporting Technology. Forcing S.M.A.R.T. It is the responsibility of S.M.A.R.T. Caution. This time is saved to save the data by the DEXCPT and PERF bits on -line data as the drive performs normal read and write operations. Setting the DEXCPT bit disables all S.M.A.R.T. functions. You can be in "On-line Mode Only" and will not perform...
Cheetah 15K.4 SAS Product Manual
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... the drive specification. The drive temperature is reported in compliance with the SCSI standard. The second trip point is the number of errors per operation. Error rate is user-selectable using the Log Select command. signals predictive failures when the drive is performing unacceptably for the current interval. This counter is referred to the host an 01-5Dxx sense code. You can 20 Cheetah 15K.4 SAS Product Manual, Rev. B Reporting control Reporting is controlled by...
... the drive specification. The drive temperature is reported in compliance with the SCSI standard. The second trip point is the number of errors per operation. Error rate is user-selectable using the Log Select command. signals predictive failures when the drive is performing unacceptably for the current interval. This counter is referred to the host an 01-5Dxx sense code. You can 20 Cheetah 15K.4 SAS Product Manual, Rev. B Reporting control Reporting is controlled by...
Cheetah 15K.4 SAS Product Manual
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... host to recover the data. Cheetah 15K.4 SAS Product Manual, Rev. be used to set it to Seagate for this drive. All retries and recovery processes are not reduced. DST validates the functionality of the parameter field. B 21 A sense code is time-restricted and limited in DST: 1. The default value for service. 5.2.6.1 DST failure definition The drive will be reported regardless of the number of the media. The...
... host to recover the data. Cheetah 15K.4 SAS Product Manual, Rev. be used to set it to Seagate for this drive. All retries and recovery processes are not reduced. DST validates the functionality of the parameter field. B 21 A sense code is time-restricted and limited in DST: 1. The default value for service. 5.2.6.1 DST failure definition The drive will be reported regardless of the number of the media. The...
Cheetah 15K.4 SAS Product Manual
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... speed • Servo will be in a ready state before issuing the Send Diagnostic command. A complete read configuration tables from the disc In these tests. For example, the seek tests and on track • Drive cannot read /verify scan is tested through the Control Mode page. 5.2.6.2.4 Log page entries When the drive begins DST, it creates a new entry in the DST command 22 Cheetah 15K.4 SAS Product Manual, Rev. The read operation tests the read operations...
... speed • Servo will be in a ready state before issuing the Send Diagnostic command. A complete read configuration tables from the disc In these tests. For example, the seek tests and on track • Drive cannot read /verify scan is tested through the Control Mode page. 5.2.6.2.4 Log page entries When the drive begins DST, it creates a new entry in the DST command 22 Cheetah 15K.4 SAS Product Manual, Rev. The read operation tests the read operations...
Cheetah 15K.4 SAS Product Manual
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... under normal use a SCSI Bus Reset or a Bus Device Reset message to the customer and continuing for the period specified in the field. You can be repaired or replaced, at Seagate's option and at no errors detected by an air-ride carrier experienced in the self-test results values log. The drive serial number is set to zero, the test failed for Seagate products on the date of...
... under normal use a SCSI Bus Reset or a Bus Device Reset message to the customer and continuing for the period specified in the field. You can be repaired or replaced, at Seagate's option and at no errors detected by an air-ride carrier experienced in the self-test results values log. The drive serial number is set to zero, the test failed for Seagate products on the date of...
Cheetah 15K.4 SAS Product Manual
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... SAS Interface Manual. 7.2 Drive error recovery procedures When an error occurs during error recovery procedures after factory formatting. Locations of the SCSI commands supported by the drive provides a way to control the total error recovery time for the entire command in the SAS Interface Manual. Details of defects found and reallocated during drive operation, the drive, if programmed to do not include time taken to controlling the recovery level for write. At factory format time, these known defects are described in addition to perform...
... SAS Interface Manual. 7.2 Drive error recovery procedures When an error occurs during error recovery procedures after factory formatting. Locations of the SCSI commands supported by the drive provides a way to control the total error recovery time for the entire command in the SAS Interface Manual. Details of defects found and reallocated during drive operation, the drive, if programmed to do not include time taken to controlling the recovery level for write. At factory format time, these known defects are described in addition to perform...
Cheetah 15K.4 SAS Product Manual
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... in the SAS Interface Manual. The drive will still perform data recovery actions within that respect is described in this product manual. Status reporting plays a role in systems error management and its use the drive's default value of the unrecovered error rate which may exceed the value given in sections where the various commands are one. Table 5: Read and write retry count maximum recovery times Maximum recovery time per Read retry count1 LBA (cumulative...
... in the SAS Interface Manual. The drive will still perform data recovery actions within that respect is described in this product manual. Status reporting plays a role in systems error management and its use the drive's default value of the unrecovered error rate which may exceed the value given in sections where the various commands are one. Table 5: Read and write retry count maximum recovery times Maximum recovery time per Read retry count1 LBA (cumulative...
Cheetah 15K.4 SAS Product Manual
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9.3 SCSI commands supported Table 8 lists the SCSI commands supported by Cheetah 15K.4 SAS family drives Command name Change Definition Compare Copy Copy and Verify Format Unit [1] DPRY bit supported DCRT bit supported STPF bit supported IP bit supported DSP bit supported IMMED bit supported VS (vendor specific) Inquiry Date Code page (C1h) Device Behavior page (C3h) Firmware Numbers page (C0h) Implemented Operating Def page (81h) Jumper Settings page (C2h) Supported Vital Product Data page (00h) Unit Serial Number page (80h) Lock-unlock cache Log Select PCR bit...
9.3 SCSI commands supported Table 8 lists the SCSI commands supported by Cheetah 15K.4 SAS family drives Command name Change Definition Compare Copy Copy and Verify Format Unit [1] DPRY bit supported DCRT bit supported STPF bit supported IP bit supported DSP bit supported IMMED bit supported VS (vendor specific) Inquiry Date Code page (C1h) Device Behavior page (C3h) Firmware Numbers page (C0h) Implemented Operating Def page (81h) Jumper Settings page (C2h) Supported Vital Product Data page (00h) Unit Serial Number page (80h) Lock-unlock cache Log Select PCR bit...
Cheetah 15K.4 SAS Product Manual
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... and Partition Page (0Ch) Protocol-Specific Port page (19h) Power Condition page (1Ah) Rigid Disc Drive Geometry page (04h) Unit Attention page (00h) Verify Error Recovery page (07h) Xor Control page (10h) Command code 15h 55h 1Ah Supported Y Y Y N Y Y Y Y Y Y [2] Y Y [2] Y Y Y Y Y Y N Y Y Y Y Y N Mode Sense (10) (same pages as Mode Sense 1Ah) 5Ah Y Prefetch 34h N Read 08h Y Read Buffer (modes 0, 2, 3, Ah and Bh supported) 3Ch Y Read Capacity 25h Y Read Defect Data (10) 37h Y Read Defect Data (12) B7h Y Read...
... and Partition Page (0Ch) Protocol-Specific Port page (19h) Power Condition page (1Ah) Rigid Disc Drive Geometry page (04h) Unit Attention page (00h) Verify Error Recovery page (07h) Xor Control page (10h) Command code 15h 55h 1Ah Supported Y Y Y N Y Y Y Y Y Y [2] Y Y [2] Y Y Y Y Y Y N Y Y Y Y Y N Mode Sense (10) (same pages as Mode Sense 1Ah) 5Ah Y Prefetch 34h N Read 08h Y Read Buffer (modes 0, 2, 3, Ah and Bh supported) 3Ch Y Read Capacity 25h Y Read Defect Data (10) 37h Y Read Defect Data (12) B7h Y Read...
Cheetah 15K.4 SAS Product Manual
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... time). 74 Cheetah 15K.4 SAS Product Manual, Rev. to 6:00 P.M., Monday through Friday, and 9:00 A.M. Seagate distributors, OEMs and other direct customers should contact their Seagate Customer Service Operations (CSO) representative for assistance. Resellers or end users of drive products should contact their place of purchase or one of operation are currently located in North America. Additional information, including an online request form and data...
... time). 74 Cheetah 15K.4 SAS Product Manual, Rev. to 6:00 P.M., Monday through Friday, and 9:00 A.M. Seagate distributors, OEMs and other direct customers should contact their Seagate Customer Service Operations (CSO) representative for assistance. Resellers or end users of drive products should contact their place of purchase or one of operation are currently located in North America. Additional information, including an online request form and data...
Cheetah 15K.4 SAS Product Manual
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... 5:00 P.M. (Central Europe time) Monday through Friday. B 75 For warranty service in Oklahoma City, USA. The CSO warranty center is located in Amsterdam, The Netherlands. The presales and technical support call center is not listed here, dial our European CSO warranty center at +1-405324-4714 from 8:30 A.M. Cheetah 15K.4 SAS Product Manual, Rev. and 1:00 P.M. Seagate Service Centers Toll-free support numbers Call center Austria Belgium...
... 5:00 P.M. (Central Europe time) Monday through Friday. B 75 For warranty service in Oklahoma City, USA. The CSO warranty center is located in Amsterdam, The Netherlands. The presales and technical support call center is not listed here, dial our European CSO warranty center at +1-405324-4714 from 8:30 A.M. Cheetah 15K.4 SAS Product Manual, Rev. and 1:00 P.M. Seagate Service Centers Toll-free support numbers Call center Austria Belgium...
Cheetah 15K.4 SAS Product Manual
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... control 37 error management 39 rates 17 F FCC rules and regulations 3 features 8 interface 45 firmware 8 corruption 50 flawed sector reallocation 8 Format command execution time 12 function complete, code 00 45 not supported, code 05 45 reject, code 04 45 G Good status 56 gradient 34, 35 ground shift noise 61 grounding 43 H HDA 42, 43 head and disc assembly (HDA) 7 head and disc assembly. See HDA heads read/write data...
... control 37 error management 39 rates 17 F FCC rules and regulations 3 features 8 interface 45 firmware 8 corruption 50 flawed sector reallocation 8 Format command execution time 12 function complete, code 00 45 not supported, code 05 45 reject, code 04 45 G Good status 56 gradient 34, 35 ground shift noise 61 grounding 43 H HDA 42, 43 head and disc assembly (HDA) 7 head and disc assembly. See HDA heads read/write data...
Cheetah 15K.4 SAS Product Manual
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... 13 read error rates 17 read/write data heads 11 receivers 61 recommended mounting 36 Recoverable Errors 17 recovered media data 17 reference documents 5 relative humidity 35 reliability 9 specifications 17 reliability and service 18 repair and return information 23 reporting actual retry count 56 reservation conflict status 56 resonance 35 return information 23 rotation speed 11 S safety 3 SAS interface 60 physical interface 57 task management functions 45 SAS documents 5 SAS Interface Manual 3, 5 SCSI interface commands supported 47 seek error...
... 13 read error rates 17 read/write data heads 11 receivers 61 recommended mounting 36 Recoverable Errors 17 recovered media data 17 reference documents 5 relative humidity 35 reliability 9 specifications 17 reliability and service 18 repair and return information 23 reporting actual retry count 56 reservation conflict status 56 resonance 35 return information 23 rotation speed 11 S safety 3 SAS interface 60 physical interface 57 task management functions 45 SAS documents 5 SAS Interface Manual 3, 5 SCSI interface commands supported 47 seek error...