Cheetah 15K.6 SAS Product Manual
Page 3
... 8 3.4 Reliability 9 3.5 Formatted capacities 9 3.6 Programmable drive capacity 9 3.7 Factory-installed options 9 4.0 Performance characteristics 11 4.1 Internal drive characteristics 11 4.2 Seek time 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...maintenance 16 5.2.3 Hot plugging the drive 16 5.2.4 S.M.A.R.T 17 5.2.5 Thermal monitor 18 5.2.6 Drive Self Test (DST 19 5.2.7...
... 8 3.4 Reliability 9 3.5 Formatted capacities 9 3.6 Programmable drive capacity 9 3.7 Factory-installed options 9 4.0 Performance characteristics 11 4.1 Internal drive characteristics 11 4.2 Seek time 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...maintenance 16 5.2.3 Hot plugging the drive 16 5.2.4 S.M.A.R.T 17 5.2.5 Thermal monitor 18 5.2.6 Drive Self Test (DST 19 5.2.7...
Cheetah 15K.6 SAS Product Manual
Page 7
... used, with Seagate standards as the drive or external to perform those integrating the drive within their systems to the system does not adversely affect the performance of safety, power distribution, shielding, audible noise control, and temperature regulation. The drive is supplied as...a suitable enclosure prior to use. The Cheetah 15K.6 disk drive is the responsibility of Communications. Shielded I /O cables are based on its host equipment to the host controller. 2.1.1.1 Electromagnetic susceptibility As a component assembly, the drive is capable of meeting the Class B limits...
... used, with Seagate standards as the drive or external to perform those integrating the drive within their systems to the system does not adversely affect the performance of safety, power distribution, shielding, audible noise control, and temperature regulation. The drive is supplied as...a suitable enclosure prior to use. The Cheetah 15K.6 disk drive is the responsibility of Communications. Shielded I /O cables are based on its host equipment to the host controller. 2.1.1.1 Electromagnetic susceptibility As a component assembly, the drive is capable of meeting the Class B limits...
Cheetah 15K.6 SAS Product Manual
Page 8
...parts and materials for typical applications. 2.2 Compliance 2.2.1 Electromagnetic compliance Seagate uses an independent laboratory to confirm compliance with the Australia/New... include disclosure of the inclusion of Korea. The drive was tested in such parts or materials. 4 Cheetah 15K.6 SAS Product Manual, Rev. Korean MIC...Control Regulation and meets the Electromagnetic Compatibility Framework requirements of the Radio Research Laboratory (RRL) Ministry of Information and Communication Republic of any RoHS-regulated substance in a representative system for the disk drives...
...parts and materials for typical applications. 2.2 Compliance 2.2.1 Electromagnetic compliance Seagate uses an independent laboratory to confirm compliance with the Australia/New... include disclosure of the inclusion of Korea. The drive was tested in such parts or materials. 4 Cheetah 15K.6 SAS Product Manual, Rev. Korean MIC...Control Regulation and meets the Electromagnetic Compatibility Framework requirements of the Radio Research Laboratory (RRL) Ministry of Information and Communication Republic of any RoHS-regulated substance in a representative system for the disk drives...
Cheetah 15K.6 SAS Product Manual
Page 12
...controlled multisegmented cache designed to dynamically adjust segments for SAS expanders and fanout adapters • Firmware downloadable using the SAS interface • 128 - Average latency = 2.0 msec • Background processing of queue • Supports start and stop commands (spindle stops spinning) • Adaptive seek velocity; 3.1 Standard features Cheetah 15K.6 drives...interface • Integrated dual port SAS controller supporting the SCSI protocol • Support for enhanced system performance. • 300 Mbytes/sec maximum instantaneous data transfers. • 15k RPM...
...controlled multisegmented cache designed to dynamically adjust segments for SAS expanders and fanout adapters • Firmware downloadable using the SAS interface • 128 - Average latency = 2.0 msec • Background processing of queue • Supports start and stop commands (spindle stops spinning) • Adaptive seek velocity; 3.1 Standard features Cheetah 15K.6 drives...interface • Integrated dual port SAS controller supporting the SCSI protocol • Support for enhanced system performance. • 300 Mbytes/sec maximum instantaneous data transfers. • 15k RPM...
Cheetah 15K.6 SAS Product Manual
Page 15
... to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 4.2 Seek time See Section 9.4.1, "SAS physical interface" on a representative sample of drives. 2. Cheetah 15K.6 SAS Product Manual, Rev. B 11 4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah 15K.6 drives. 4.1 Internal drive characteristics Drive capacity ST3450856SS ST3300656SS ST3146356SS ST3450056SS...
... to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 4.2 Seek time See Section 9.4.1, "SAS physical interface" on a representative sample of drives. 2. Cheetah 15K.6 SAS Product Manual, Rev. B 11 4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah 15K.6 drives. 4.1 Internal drive characteristics Drive capacity ST3450856SS ST3300656SS ST3146356SS ST3450056SS...
Cheetah 15K.6 SAS Product Manual
Page 17
...) primitive. See the explanation provided with buffer-full ratio rules. The drive fetches the requested logical blocks from the disk and transfers them into logical segments from removal of logical blocks. Cheetah 15K.6 SAS Product Manual, Rev. The START STOP UNIT command may ... The retrieved data merely passes through either port, the drive becomes ready for more detail concerning the cache bits. The drive dynamically creates and removes segments based on the drive. 4.4 Prefetch/multi-segmented cache control The drive provides a prefetch (read command is still used as...
...) primitive. See the explanation provided with buffer-full ratio rules. The drive fetches the requested logical blocks from the disk and transfers them into logical segments from removal of logical blocks. Cheetah 15K.6 SAS Product Manual, Rev. The START STOP UNIT command may ... The retrieved data merely passes through either port, the drive becomes ready for more detail concerning the cache bits. The drive dynamically creates and removes segments based on the drive. 4.4 Prefetch/multi-segmented cache control The drive provides a prefetch (read command is still used as...
Cheetah 15K.6 SAS Product Manual
Page 21
... S.M.A.R.T. with the RTZ command resets the timer. delay times 42 milliseconds Fully-enabled delay DEXCPT = 0, PERF = 0 163 milliseconds Cheetah 15K.6 SAS Product Manual, Rev. You can be in "On-line Mode Only" and will not perform off -line attribute data...you to minimize "false" and "failed" predictions. The process of the drive and the thresholds are optimized to control when S.M.A.R.T. 5.2.4 S.M.A.R.T. This technology is intended to recognize conditions that indicate imminent drive failure and is in the operating performance of measuring off -line functions. ...
... S.M.A.R.T. with the RTZ command resets the timer. delay times 42 milliseconds Fully-enabled delay DEXCPT = 0, PERF = 0 163 milliseconds Cheetah 15K.6 SAS Product Manual, Rev. You can be in "On-line Mode Only" and will not perform off -line attribute data...you to minimize "false" and "failed" predictions. The process of the drive and the thresholds are optimized to control when S.M.A.R.T. 5.2.4 S.M.A.R.T. This technology is intended to recognize conditions that indicate imminent drive failure and is in the operating performance of measuring off -line functions. ...
Cheetah 15K.6 SAS Product Manual
Page 22
... to exceed zero) whenever the error rate is a separate Failure History Counter for each attribute. 5.2.5 Thermal monitor Cheetah 15K.6 drives implement a temperature warning system which to the drive specification. There is acceptable. Saves a S.M.A.R.T. This feature is controlled by the Enable Warning (EWasc) bit, and the reporting mechanism is the number of operations over which...
... to exceed zero) whenever the error rate is a separate Failure History Counter for each attribute. 5.2.5 Thermal monitor Cheetah 15K.6 drives implement a temperature warning system which to the drive specification. There is acceptable. Saves a S.M.A.R.T. This feature is controlled by the Enable Warning (EWasc) bit, and the reporting mechanism is the number of operations over which...
Cheetah 15K.6 SAS Product Manual
Page 24
...read/write/read operations. This option provides a quick confidence test of the media. The integrity of the media is checked 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 following conditions: • Motor will not spin • Motor will not lock...log page to non-volatile memory After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its SelfTest Results Log page in the field. 20 Cheetah 15K.6 SAS Product Manual, Rev. The host may use Log Sense to read /verify scan ...
...read/write/read operations. This option provides a quick confidence test of the media. The integrity of the media is checked 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 following conditions: • Motor will not spin • Motor will not lock...log page to non-volatile memory After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its SelfTest Results Log page in the field. 20 Cheetah 15K.6 SAS Product Manual, Rev. The host may use Log Sense to read /verify scan ...
Cheetah 15K.6 SAS Product Manual
Page 43
.... This includes both isolated drives and integrated drives. There will continue when normal operating vibration levels are available. Cheetah 15K.6 SAS Product Manual, Rev. This assumes system recovery routines are resumed. The drive shall not incur physical damage... and transportation. Operating-abnormal Equipment as installed for normal operation, shall comply with minimal environmental control. 6.4.7 Corrosive environment Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to all conditions of non-operating vibration...
.... This includes both isolated drives and integrated drives. There will continue when normal operating vibration levels are available. Cheetah 15K.6 SAS Product Manual, Rev. This assumes system recovery routines are resumed. The drive shall not incur physical damage... and transportation. Operating-abnormal Equipment as installed for normal operation, shall comply with minimal environmental control. 6.4.7 Corrosive environment Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to all conditions of non-operating vibration...
Cheetah 15K.6 SAS Product Manual
Page 47
In addition, Seagate provides the following technologies used depend on the options previously set in the Error Recovery Parameters mode page. The total amount of the SCSI commands supported by the drive provides a way to control the total error recovery time for the entire command in ...involve using the Read Defect Data command. The error recovery scheme supported by the drive are listed in the "G" list (defects growth list). Details of time spent in error recovery for a single LBA. Cheetah 15K.6 SAS Product Manual, Rev. Locations of time spent in error recovery ...
In addition, Seagate provides the following technologies used depend on the options previously set in the Error Recovery Parameters mode page. The total amount of the SCSI commands supported by the drive provides a way to control the total error recovery time for the entire command in ...involve using the Read Defect Data command. The error recovery scheme supported by the drive are listed in the "G" list (defects growth list). Details of time spent in error recovery for a single LBA. Cheetah 15K.6 SAS Product Manual, Rev. Locations of time spent in error recovery ...
Cheetah 15K.6 SAS Product Manual
Page 48
Setting these retry counts to change. Therefore, each command's total recovery time is achieved by the drive in error recovery. Minimum recovery time limit is subject to 00 01. 44 Cheetah 15K.6 SAS Product Manual, Rev. The maximum level used by setting the Recovery Time Limit field to the ...recovery within the limits defined by the read and write retry counts. When the RC bit is executing error recovery and it restarts on control of multiple steps, where a step is allowed to take up to perform reallocation is determined by the Read Retry Count, Write Retry ...
Setting these retry counts to change. Therefore, each command's total recovery time is achieved by the drive in error recovery. Minimum recovery time limit is subject to 00 01. 44 Cheetah 15K.6 SAS Product Manual, Rev. The maximum level used by setting the Recovery Time Limit field to the ...recovery within the limits defined by the read and write retry counts. When the RC bit is executing error recovery and it restarts on control of multiple steps, where a step is allowed to take up to perform reallocation is determined by the Read Retry Count, Write Retry ...
Cheetah 15K.6 SAS Product Manual
Page 58
B Table 21: Commands supported by Cheetah 15K.6 SAS family drives (continued) Command name Non-medium Error page (06h) Pages Supported list (00h) Read Error Counter page (03h) Read Reverse Error Counter page (04h) Self-... mode subpage (01h) Notch and Partition Page (0Ch) Protocol-Specific Port page (19h) Power Condition page (1Ah) Rigid disk 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 Y [2] Y Y [2] Y Y Y Y Y Y Y N Y Y Y Y Y N Mode Sense (10) (same pages as Mode Sense 1Ah)...
B Table 21: Commands supported by Cheetah 15K.6 SAS family drives (continued) Command name Non-medium Error page (06h) Pages Supported list (00h) Read Error Counter page (03h) Read Reverse Error Counter page (04h) Self-... mode subpage (01h) Notch and Partition Page (0Ch) Protocol-Specific Port page (19h) Power Condition page (1Ah) Rigid disk 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 Y [2] Y Y [2] Y Y Y Y Y Y Y N Y Y Y Y Y N Mode Sense (10) (same pages as Mode Sense 1Ah)...
Cheetah 15K.6 SAS Product Manual
Page 62
...is a zero in any bit position in flash E-PROM (nonvolatile memory) on reset, hard reset, or Bus Device Reset message. 4. The changeable values list can only be used by the drive to control its operating parameters to change the values identified as current values in nonvolatile memory, that ... values for Mode page 81. A zero (0) indicates the value is changeable. 58 Cheetah 15K.6 SAS Product Manual, Rev. Note also that dictates which of these bits are hard-coded in the drive firmware stored in the field, it takes saved values from default values storage. Standard ...
...is a zero in any bit position in flash E-PROM (nonvolatile memory) on reset, hard reset, or Bus Device Reset message. 4. The changeable values list can only be used by the drive to control its operating parameters to change the values identified as current values in nonvolatile memory, that ... values for Mode page 81. A zero (0) indicates the value is changeable. 58 Cheetah 15K.6 SAS Product Manual, Rev. Note also that dictates which of these bits are hard-coded in the drive firmware stored in the field, it takes saved values from default values storage. Standard ...
Cheetah 15K.6 SAS Product Manual
Page 66
...16 provide the dimensions of the SAS device connector J1. A "Y" in Mode Select command needed to 64 queue tags supported) Deferred error handling Parameter rounding (controlled by Round bit in Mode Select page 0) Reporting actual retry count in Extended Sense bytes 15, 16, and 17 Adaptive caching SMP = 1 in the... conflict Task set full ACA active ACA active, faulted initiator 9.4.1 SAS physical interface Figure 14 shows the location of the SAS device. 62 Cheetah 15K.6 SAS Product Manual, Rev. An "N" in the support column indicates the feature or condition is supported. B
...16 provide the dimensions of the SAS device connector J1. A "Y" in Mode Select command needed to 64 queue tags supported) Deferred error handling Parameter rounding (controlled by Round bit in Mode Select page 0) Reporting actual retry count in Extended Sense bytes 15, 16, and 17 Adaptive caching SMP = 1 in the... conflict Task set full ACA active ACA active, faulted initiator 9.4.1 SAS physical interface Figure 14 shows the location of the SAS device. 62 Cheetah 15K.6 SAS Product Manual, Rev. An "N" in the support column indicates the feature or condition is supported. B
Cheetah 15K.6 SAS Product Manual
Page 86
... physical 62 requirements 51 intermediate/condition met/good status 62 intermediate/good status 62 internal data rate 11 internal defects/errors 43 internal drive characteristics 11 82 IRAW 46 J jumpers 47 L latency average rotational 11, 12 logical block address 13 logical block reallocation scheme 8... media data 15 Mode sense data, table 57 mounting 49 holes 49 orientations 47 N noise audible 3 noise immunity 27 Cheetah 15K.6 SAS Product Manual, Rev. environmental control 39 error management 43 rates 15 errors 43 F FCC rules and regulations 3 features 8 interface 51 firmware 8 corruption 56...
... physical 62 requirements 51 intermediate/condition met/good status 62 intermediate/good status 62 internal data rate 11 internal defects/errors 43 internal drive characteristics 11 82 IRAW 46 J jumpers 47 L latency average rotational 11, 12 logical block address 13 logical block reallocation scheme 8... media data 15 Mode sense data, table 57 mounting 49 holes 49 orientations 47 N noise audible 3 noise immunity 27 Cheetah 15K.6 SAS Product Manual, Rev. environmental control 39 error management 43 rates 15 errors 43 F FCC rules and regulations 3 features 8 interface 51 firmware 8 corruption 56...
Cheetah 15K.6 SAS Product Manual
Page 87
... 62 physical specifications 23 pin descriptions 66 power 67 dissipation 30 requirements, AC 23 requirements, DC 23 sequencing 27 power distribution 3 prefetch/multi-segmented cache control 13 preventive maintenance 15 Q queue tagging 62 R radio interference regulations 3 RCD bit 13 read error rates 15, 43 read/write data heads 11 receivers 67...
... 62 physical specifications 23 pin descriptions 66 power 67 dissipation 30 requirements, AC 23 requirements, DC 23 sequencing 27 power distribution 3 prefetch/multi-segmented cache control 13 preventive maintenance 15 Q queue tagging 62 R radio interference regulations 3 RCD bit 13 read error rates 15, 43 read/write data heads 11 receivers 67...