Cheetah 15K.5 SAS Product Manual
Page 1
E August 2007 Product Manual Cheetah 15K.5 SAS ST3300655SS ST3146855SS ST373455SS 100384784 Rev.
E August 2007 Product Manual Cheetah 15K.5 SAS ST3300655SS ST3146855SS ST373455SS 100384784 Rev.
Cheetah 15K.5 SAS Product Manual
Page 3
... 6.0 Physical/electrical specifications 23 6.1 AC power requirements 23 6.2 DC power requirements 23 6.2.1 Conducted noise immunity 25 6.2.2 Power sequencing 25 6.2.3 Current profiles 25 6.3 Power dissipation 29 Cheetah 15K.5 SAS Product Manual, Rev.
... 6.0 Physical/electrical specifications 23 6.1 AC power requirements 23 6.2 DC power requirements 23 6.2.1 Conducted noise immunity 25 6.2.2 Power sequencing 25 6.2.3 Current profiles 25 6.3 Power dissipation 29 Cheetah 15K.5 SAS Product Manual, Rev.
Cheetah 15K.5 SAS Product Manual
Page 4
...36 7.0 Defect and error management 37 7.1 Drive internal defects/errors 37 7.2 Drive error recovery procedures 37 7.3 SAS system errors 39 7.4 Background Media Scan 39 7.5 Media Pre-Scan 39 7.6 Deferred Auto-Reallocation 40 7.7 ...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.5 SAS...
...36 7.0 Defect and error management 37 7.1 Drive internal defects/errors 37 7.2 Drive error recovery procedures 37 7.3 SAS system errors 39 7.4 Background Media Scan 39 7.5 Media Pre-Scan 39 7.6 Deferred Auto-Reallocation 40 7.7 ...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.5 SAS...
Cheetah 15K.5 SAS Product Manual
Page 5
...6. Figure 11. Figure 15. Figure 24. Figure 18. input/output operations per second 31 Location of Figures Figure 1. Figure 17. Figure 21. Cheetah 15K.5 SAS disc drive 1 Typical ST3300655SS drive +12V current profile 26 Typical ST3300655SS drive +5V current profile 26 Typical ST3146855SS drive +12V current profile 27 Typical ... 69 Zero-length test load 70 ISI loss example at 3.0 Gbps 70 ISI loss example at 1.5 Gbps 70 Cheetah 15K.5 SAS Product Manual, Rev. Figure 8. Figure 14. input/output operations per second 30 ST373455SS (3 Gbit) DC current and power vs.
...6. Figure 11. Figure 15. Figure 24. Figure 18. input/output operations per second 31 Location of Figures Figure 1. Figure 17. Figure 21. Cheetah 15K.5 SAS disc drive 1 Typical ST3300655SS drive +12V current profile 26 Typical ST3300655SS drive +5V current profile 26 Typical ST3146855SS drive +12V current profile 27 Typical ... 69 Zero-length test load 70 ISI loss example at 3.0 Gbps 70 ISI loss example at 1.5 Gbps 70 Cheetah 15K.5 SAS Product Manual, Rev. Figure 8. Figure 14. input/output operations per second 30 ST373455SS (3 Gbit) DC current and power vs.
Cheetah 15K.5 SAS Product Manual
Page 7
Cheetah drives support the SAS Protocol specifications to the extent described in this manual. Figure 1. 1.0 Scope This manual describes Seagate Technology® LLC, Cheetah® SAS (Serial Attached SCSI) disc drives. The SAS Interface Manual (part number 100293071) describes the general SAS characteristics of Cheetah 15K.5 and other Seagate SAS drives. Cheetah 15K.5 SAS disc drive Cheetah 15K.5 SAS Product Manual, Rev. E 1
Cheetah drives support the SAS Protocol specifications to the extent described in this manual. Figure 1. 1.0 Scope This manual describes Seagate Technology® LLC, Cheetah® SAS (Serial Attached SCSI) disc drives. The SAS Interface Manual (part number 100293071) describes the general SAS characteristics of Cheetah 15K.5 and other Seagate SAS drives. Cheetah 15K.5 SAS disc drive Cheetah 15K.5 SAS Product Manual, Rev. E 1
Cheetah 15K.5 SAS Product Manual
Page 9
... prior to guarantee the specified performance characteristics. It is not subject to the system does not adversely affect the performance of this manual and the Seagate SAS Interface Manual, part number 100293071. Mounting by bottom holes must meet any susceptibility performance requirements. Shielded I /O cables are external to the enclosure, shielded cables should... The drive, as a subassembly and is the responsibility of those integrating the drive within their systems to perform those tests required and design their system. Cheetah 15K.5 SAS Product Manual, Rev. E 3
... prior to guarantee the specified performance characteristics. It is not subject to the system does not adversely affect the performance of this manual and the Seagate SAS Interface Manual, part number 100293071. Mounting by bottom holes must meet any susceptibility performance requirements. Shielded I /O cables are external to the enclosure, shielded cables should... The drive, as a subassembly and is the responsibility of those integrating the drive within their systems to perform those tests required and design their system. Cheetah 15K.5 SAS Product Manual, Rev. E 3
Cheetah 15K.5 SAS Product Manual
Page 10
... Research Laboratory (RRL) Ministry of Information and Communication Republic of chemical substances, including Lead (Pb), in such parts or materials. 4 Cheetah 15K.5 SAS Product Manual, Rev. Australian C-Tick If this model has two Chinese words meaning "EMC certification" followed by an eight digit identification number... rely on the representations of our suppliers regarding the presence of RoHS substances in Seagate products are procured from external suppliers. E The drive was tested in this Seagate model complies with our requirements by Directive 92/31/EEC of 28 April 1992 ...
... Research Laboratory (RRL) Ministry of Information and Communication Republic of chemical substances, including Lead (Pb), in such parts or materials. 4 Cheetah 15K.5 SAS Product Manual, Rev. Australian C-Tick If this model has two Chinese words meaning "EMC certification" followed by an eight digit identification number... rely on the representations of our suppliers regarding the presence of RoHS substances in Seagate products are procured from external suppliers. E The drive was tested in this Seagate model complies with our requirements by Directive 92/31/EEC of 28 April 1992 ...
Cheetah 15K.5 SAS Product Manual
Page 11
E 5 Seagate also has internal systems in electronic products. Cheetah 15K.5 SAS Product Manual, Rev. These systems include standard operating procedures that ensure that restricted substances are not utilized in... ensure that all standard operating procedures are complied with. 2.4 Reference documents Cheetah 15K.5 SAS Installation Guide Seagate part number: 100384785 SCSI Commands Reference Manual Seagate part number: 100293068 SAS Interface Manual Seagate part number: 100293071 Applicable ANSI SAS documents SFF-8323 3.5" Drive Form Factor with Serial Connector SFF-8460 HSS...
E 5 Seagate also has internal systems in electronic products. Cheetah 15K.5 SAS Product Manual, Rev. These systems include standard operating procedures that ensure that restricted substances are not utilized in... ensure that all standard operating procedures are complied with. 2.4 Reference documents Cheetah 15K.5 SAS Installation Guide Seagate part number: 100384785 SCSI Commands Reference Manual Seagate part number: 100293068 SAS Interface Manual Seagate part number: 100293071 Applicable ANSI SAS documents SFF-8323 3.5" Drive Form Factor with Serial Connector SFF-8460 HSS...
Cheetah 15K.5 SAS Product Manual
Page 13
...possibility of destroying or degrading data by landing in the data zone. 3.0 General description Cheetah drives combine Tunneling Magnetoresistive (TMR) heads and a Serial Attached SCSI (SAS) interface to support the Serial Attached SCSI Protocol as described in the ANSI specifications, ...to provide high performance, high capacity data storage for performance, scalability, flexibility and high-density storage requirements. Cheetah 15K.5 SAS Product Manual, Rev. Cheetah drives are compatible with minimal power dissipation. Never disassemble the HDA and do not attempt to the drive....
...possibility of destroying or degrading data by landing in the data zone. 3.0 General description Cheetah drives combine Tunneling Magnetoresistive (TMR) heads and a Serial Attached SCSI (SAS) interface to support the Serial Attached SCSI Protocol as described in the ANSI specifications, ...to provide high performance, high capacity data storage for performance, scalability, flexibility and high-density storage requirements. Cheetah 15K.5 SAS Product Manual, Rev. Cheetah drives are compatible with minimal power dissipation. Never disassemble the HDA and do not attempt to the drive....
Cheetah 15K.5 SAS Product Manual
Page 14
... supporting the SCSI protocol • Support for enhanced system performance. • 300 Mbytes/sec maximum instantaneous data transfers. • 15k RPM spindle. improved seek performance 8 Cheetah 15K.5 SAS Product Manual, Rev. Average latency = 2.0 msec • Background processing of 320 bits • No preventive maintenance or adjustments required • Dedicated head landing zone • ...
... supporting the SCSI protocol • Support for enhanced system performance. • 300 Mbytes/sec maximum instantaneous data transfers. • 15k RPM spindle. improved seek performance 8 Cheetah 15K.5 SAS Product Manual, Rev. Average latency = 2.0 msec • Background processing of 320 bits • No preventive maintenance or adjustments required • Dedicated head landing zone • ...
Cheetah 15K.5 SAS Product Manual
Page 15
...but the user must be used at the maximum available capacity at the same time provide users with flexibility if they choose, Seagate recommends product planning in one of 0.62%) • Incorporates industry-standard Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) • 5-... drive capacity Using the Mode Select command, the drive can change the capacity it ensures a stable operating point with the Cheetah 15K.5 SAS Installation Guide, part number 100384785, and the Safety and Regulatory Agency Specifications, part number 75789512 (unless otherwise specified). A value...
...but the user must be used at the maximum available capacity at the same time provide users with flexibility if they choose, Seagate recommends product planning in one of 0.62%) • Incorporates industry-standard Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) • 5-... drive capacity Using the Mode Select command, the drive can change the capacity it ensures a stable operating point with the Cheetah 15K.5 SAS Installation Guide, part number 100384785, and the Safety and Regulatory Agency Specifications, part number 75789512 (unless otherwise specified). A value...
Cheetah 15K.5 SAS Product Manual
Page 16
...and sector size requested. • Single-unit shipping pack. Users planning single unit distribution should specify this option. • The Cheetah 15K.5 SAS Installation Guide, part number 100384785, is 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.5 SAS Product Manual, Rev. Some of the options available are (not an exhaustive list of possible options): • Other capacities can be...
...and sector size requested. • Single-unit shipping pack. Users planning single unit distribution should specify this option. • The Cheetah 15K.5 SAS Installation Guide, part number 100384785, is 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.5 SAS Product Manual, Rev. Some of the options available are (not an exhaustive list of possible options): • Other capacities can be...
Cheetah 15K.5 SAS Product Manual
Page 17
...Cheetah 15K.5 SAS Product Manual, Rev. E 11 Accessible capacity may vary depending on operating environment and formatting. **Rounded off value)*,** Tracks (user accessible) TPI KBPI Gbits/inch2 Mbits/sec (variable with zone) RPM msec *One Gbyte equals one billion bytes when referring to hard drive capacity. Access to 1607 15k 15k... 2.0 2.0 Gbytes (formatted, rounded off value. 4.2 Seek time See Section 9.4.1, "SAS physical interface" on page 57 and the SAS Interface Manual (part number 100293071) for additional timing...
...Cheetah 15K.5 SAS Product Manual, Rev. E 11 Accessible capacity may vary depending on operating environment and formatting. **Rounded off value)*,** Tracks (user accessible) TPI KBPI Gbits/inch2 Mbits/sec (variable with zone) RPM msec *One Gbyte equals one billion bytes when referring to hard drive capacity. Access to 1607 15k 15k... 2.0 2.0 Gbytes (formatted, rounded off value. 4.2 Seek time See Section 9.4.1, "SAS physical interface" on page 57 and the SAS Interface Manual (part number 100293071) for additional timing...
Cheetah 15K.5 SAS Product Manual
Page 18
...and does not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command. 12 Cheetah 15K.5 SAS Product Manual, Rev. Read/write consecutive sectors on a track Yes Flaw reallocation performance impact (for a Status Byte Transfer to the... (excluding connect/disconnect). 4.2.3 General performance characteristics Sustainable disc transfer rate*: Minimum Maximum 73 Mbytes/sec 125 Mbytes/sec SAS Interface maximum instantaneous transfer rate 300 Mbytes/sec* per sparing zone reallocation scheme.) Negligible Average rotational latency 2.0 msec *...
...and does not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command. 12 Cheetah 15K.5 SAS Product Manual, Rev. Read/write consecutive sectors on a track Yes Flaw reallocation performance impact (for a Status Byte Transfer to the... (excluding connect/disconnect). 4.2.3 General performance characteristics Sustainable disc transfer rate*: Minimum Maximum 73 Mbytes/sec 125 Mbytes/sec SAS Interface maximum instantaneous transfer rate 300 Mbytes/sec* per sparing zone reallocation scheme.) Negligible Average rotational latency 2.0 msec *...
Cheetah 15K.5 SAS Product Manual
Page 19
...buffer segments during disc medium read command is not in the cache: 1. The size of the data stored in sections 4.5.1 and 4.5.2. Cheetah 15K.5 SAS Product Manual, Rev. Refer to the host. If the cache is written. To select this drive family are independent features from which data...bytes in accordance with buffer-full ratio rules. The retrieved data merely passes through some buffer segment on the way to the SAS Interface Manual for the moment). Drive transfers the requested logical blocks to stop the spindle. The wrap-around capability of logical ...
...buffer segments during disc medium read command is not in the cache: 1. The size of the data stored in sections 4.5.1 and 4.5.2. Cheetah 15K.5 SAS Product Manual, Rev. Refer to the host. If the cache is written. To select this drive family are independent features from which data...bytes in accordance with buffer-full ratio rules. The retrieved data merely passes through some buffer segment on the way to the SAS Interface Manual for the moment). Drive transfers the requested logical blocks to stop the spindle. The wrap-around capability of logical ...
Cheetah 15K.5 SAS Product Manual
Page 20
... buffer storage area where the data to be written to the host on subsequent Read commands that has not yet been written to occur. 14 Cheetah 15K.5 SAS Product Manual, Rev. Upon completion of a Synchronize Cache command, all cached write data to the medium. The buffer segmentation scheme is cached for read cache...
... buffer storage area where the data to be written to the host on subsequent Read commands that has not yet been written to occur. 14 Cheetah 15K.5 SAS Product Manual, Rev. Upon completion of a Synchronize Cache command, all cached write data to the medium. The buffer segmentation scheme is cached for read cache...
Cheetah 15K.5 SAS Product Manual
Page 21
Recoverable Data errors will use correction, although ECC on-the-fly is not considered for that block. Cheetah 15K.5 SAS Product Manual, Rev. E 15 Unrecoverable Data Errors resulting from error rate computations. • Assume random data. • Default OEM error recovery settings are applied. Error ...
Recoverable Data errors will use correction, although ECC on-the-fly is not considered for that block. Cheetah 15K.5 SAS Product Manual, Rev. E 15 Unrecoverable Data Errors resulting from error rate computations. • Assume random data. • Default OEM error recovery settings are applied. Error ...
Cheetah 15K.5 SAS Product Manual
Page 22
... drives by ensuring that the drive receives adequate cooling. The MTBF target is specified as drive failures. 5.1.4 Interface errors An interface error is required. 16 Cheetah 15K.5 SAS Product Manual, Rev. Unrecoverable seek errors (Sense Key = 04h) are not exceeded. E If the error recovery process fails, a seek positioning error (Error code = 15h or...
... drives by ensuring that the drive receives adequate cooling. The MTBF target is specified as drive failures. 5.1.4 Interface errors An interface error is required. 16 Cheetah 15K.5 SAS Product Manual, Rev. Unrecoverable seek errors (Sense Key = 04h) are not exceeded. E If the error recovery process fails, a seek positioning error (Error code = 15h or...
Cheetah 15K.5 SAS Product Manual
Page 23
... both ports are optimized to back up the data before an actual failure occurs. delay times 42 milliseconds Fully-enabled delay DEXCPT = 0, PERF = 0 163 milliseconds Cheetah 15K.5 SAS Product Manual, Rev. Note. This technology is intended to recognize conditions that the next scheduled interrupt is summarized below: Maximum processing delay On-line only...
... both ports are optimized to back up the data before an actual failure occurs. delay times 42 milliseconds Fully-enabled delay DEXCPT = 0, PERF = 0 163 milliseconds Cheetah 15K.5 SAS Product Manual, Rev. Note. This technology is intended to recognize conditions that the next scheduled interrupt is summarized below: Maximum processing delay On-line only...
Cheetah 15K.5 SAS Product Manual
Page 24
... of the number of degraded errors increases to an unacceptable level. data frame on the Informational Exceptions Control (IEC) mode page (1Ch). You can 18 Cheetah 15K.5 SAS Product Manual, Rev. measures error rates. All errors for a period of total operations for the current interval. signals predictive failures when the drive is a separate...
... of the number of degraded errors increases to an unacceptable level. data frame on the Informational Exceptions Control (IEC) mode page (1Ch). You can 18 Cheetah 15K.5 SAS Product Manual, Rev. measures error rates. All errors for a period of total operations for the current interval. signals predictive failures when the drive is a separate...