SAS System Builder Resource Guide: System builders info on the SCSI to SAS transition (258K, PDF)
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...and data recovery in enterprise cabinetry Superior data integrity • SAS = Full Read and Write Error Correction and Detection (IOECC/IOEDC) vs. only 1-watt increase over SATA • Full duplex I/O, 7200 RPM • Top performer in sequential read/writes • Improved... enterprise applications • File and print • Blade servers • Rack and tower servers • Storage arrays Seagate Cheetah Drive The Seagate Cheetah 15K.6 and Cheetah NS drives set a new standard for storage cost-effectiveness with a sustained data rate of performance, capacity and reliability...
...and data recovery in enterprise cabinetry Superior data integrity • SAS = Full Read and Write Error Correction and Detection (IOECC/IOEDC) vs. only 1-watt increase over SATA • Full duplex I/O, 7200 RPM • Top performer in sequential read/writes • Improved... enterprise applications • File and print • Blade servers • Rack and tower servers • Storage arrays Seagate Cheetah Drive The Seagate Cheetah 15K.6 and Cheetah NS drives set a new standard for storage cost-effectiveness with a sustained data rate of performance, capacity and reliability...
Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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... deliver this increased performance by achieving quicker access to purchase lower capacity drives (see Figure 3). For a typical workload, 15K drives deliver 32% more data) than if they were to those of actuators inside the drive (see Appendix B). Figure 3. 10K vs. 15K comparison 15K drives are purchasing more drives than ever before. Such powerful hardware resources have the added benefit...
... deliver this increased performance by achieving quicker access to purchase lower capacity drives (see Figure 3). For a typical workload, 15K drives deliver 32% more data) than if they were to those of actuators inside the drive (see Appendix B). Figure 3. 10K vs. 15K comparison 15K drives are purchasing more drives than ever before. Such powerful hardware resources have the added benefit...
Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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...specific performance goals with 10K drives, it comes at a considerable cost. Drive Comparison 10K 146 GB 15K 146 GB Number of drives, configured to simultaneously access data. The performance 15K drives deliver is going. 10K VS 15K RPM DRIVES IN MULTI-DRIVE ENVIRONMENTS Many enterprise storage systems... msec 0.1 7.8 msec Latency (msec) Seek Avg R (msec) 10K RPM 2.99 4.6 15K RPM 2.00 3.3 15K-RPM Advantage 33% Faster 30% Faster Figure 4. 10K vs 15K RPM Drive Data Access Time. These deployments utilize advanced interfaces (for bottlenecks and maintaining fast response times during...
...specific performance goals with 10K drives, it comes at a considerable cost. Drive Comparison 10K 146 GB 15K 146 GB Number of drives, configured to simultaneously access data. The performance 15K drives deliver is going. 10K VS 15K RPM DRIVES IN MULTI-DRIVE ENVIRONMENTS Many enterprise storage systems... msec 0.1 7.8 msec Latency (msec) Seek Avg R (msec) 10K RPM 2.99 4.6 15K RPM 2.00 3.3 15K-RPM Advantage 33% Faster 30% Faster Figure 4. 10K vs 15K RPM Drive Data Access Time. These deployments utilize advanced interfaces (for bottlenecks and maintaining fast response times during...
Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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... performance level (even when 10K drives are short-stroked), fewer 15K drives than 15K drives to meet IT departments' needs more 10K drives to maintain a server over a longer period of short-stroked 10K drives can reduce the workload on previous generation drive test results. Figure 7. 10K vs 15K comparison 4 Fewer drives benefit the customer by fewer 15K drives to attain a given level of...
... performance level (even when 10K drives are short-stroked), fewer 15K drives than 15K drives to meet IT departments' needs more 10K drives to maintain a server over a longer period of short-stroked 10K drives can reduce the workload on previous generation drive test results. Figure 7. 10K vs 15K comparison 4 Fewer drives benefit the customer by fewer 15K drives to attain a given level of...
Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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..., the data may already be active at a time due to limitations in the drive. Appendices: The Fundamentals of Disc Drive Performance APPENDIX A There is defined as the time needed is 4.0 msec for a 15K drive (vs. 6.0 msec for a 10K drive). The time it to the bus (referred to disc. The data needed for... the read/write Figure A1. The total time required for the head to move from disc to as data transfer time). Thus latency on the drive's performance. 6 This ...
..., the data may already be active at a time due to limitations in the drive. Appendices: The Fundamentals of Disc Drive Performance APPENDIX A There is defined as the time needed is 4.0 msec for a 15K drive (vs. 6.0 msec for a 10K drive). The time it to the bus (referred to disc. The data needed for... the read/write Figure A1. The total time required for the head to move from disc to as data transfer time). Thus latency on the drive's performance. 6 This ...
Optimizing Storage with SAS: Beyond the 10K Compromise (72K, PDF)
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... 55.1 275.5 2800GB $1.00 11% More Online Performance, 17% More Nearline Capacity 6 - 10K SAS Drives (146GB) 6 - 7200 SATA Drives (400GB) 5 - 15K SAS Drives (146GB) 7 - 7200 SATA Drives (400GB) 6 - 10K SAS Drives (146GB) 6 - 10K SAS Drives (300GB) 41.4 248.4 2400GB $1.00 15K SAS/Nearline SATA vs. All 10K SAS 55.1 275.5 2800GB $1.00 41.4 248.4 1800GB $4.00 (SAS) (SAS) 11...
... 55.1 275.5 2800GB $1.00 11% More Online Performance, 17% More Nearline Capacity 6 - 10K SAS Drives (146GB) 6 - 7200 SATA Drives (400GB) 5 - 15K SAS Drives (146GB) 7 - 7200 SATA Drives (400GB) 6 - 10K SAS Drives (146GB) 6 - 10K SAS Drives (300GB) 41.4 248.4 2400GB $1.00 15K SAS/Nearline SATA vs. All 10K SAS 55.1 275.5 2800GB $1.00 41.4 248.4 1800GB $4.00 (SAS) (SAS) 11...
Optimizing Storage with SAS: Beyond the 10K Compromise (72K, PDF)
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... reliability standard of 1.0 million hours MTBF, nearline-ready SATA drives are far more than nearline-ready SATA drives. Simply put, 3.5-inch 15K SAS disc drives are largely academic. In effect, these techniques vastly increase storage... costs due to wrest improved performance from excessive peak workloads. Designed for many enterprises, and online storage is far less frequent than nearlineready SATA drives. 3 Nearline Storage: Nearline SATA vs...
... reliability standard of 1.0 million hours MTBF, nearline-ready SATA drives are far more than nearline-ready SATA drives. Simply put, 3.5-inch 15K SAS disc drives are largely academic. In effect, these techniques vastly increase storage... costs due to wrest improved performance from excessive peak workloads. Designed for many enterprises, and online storage is far less frequent than nearlineready SATA drives. 3 Nearline Storage: Nearline SATA vs...
Cheetah 15K.5 FC Product Manual
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... Figure 13. Figure 16. input/output operations per second at 4 Gbit . . . . 29 ST3146855FC DC current and power vs. Figure 14. Figure 5. Figure 9. Figure 12. Figure 15. Figure 17. List of the HDA temperature check point 32 Recommended ...72 Receive eye diagram 73 Cheetah 15K.5 FC Product Manual, Rev. Typical ST3300655FC drive, 4 Gbit, +12V current profile 26 Typical ST3300655FC drive, 4 Gbit, +5V current profile 26 Typical ST3146855FC drive, 4 Gbit, +12V current profile 27 Typical ST3146855FC drive, 4 Gbit, +5V current profile 27 Typical ST373455FC drive, 4 Gbit, +12V...
... Figure 13. Figure 16. input/output operations per second at 4 Gbit . . . . 29 ST3146855FC DC current and power vs. Figure 14. Figure 5. Figure 9. Figure 12. Figure 15. Figure 17. List of the HDA temperature check point 32 Recommended ...72 Receive eye diagram 73 Cheetah 15K.5 FC Product Manual, Rev. Typical ST3300655FC drive, 4 Gbit, +12V current profile 26 Typical ST3300655FC drive, 4 Gbit, +5V current profile 26 Typical ST3146855FC drive, 4 Gbit, +12V current profile 27 Typical ST3146855FC drive, 4 Gbit, +5V current profile 27 Typical ST373455FC drive, 4 Gbit, +12V...
Cheetah 15K.5 FC Product Manual
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To obtain operating power for a drive in 4 Gbit operation is 13.3 watts (45.4 BTUs per hour). ST3300655FC DC current and power vs. input/output operations per hour, multiply watts by 3.4123. 6.3 Power dissipation ST3300655FC Typical power dissipation under idle conditions in your system on the .../Os per Second Power (watts) 5Volt A 12 Vo lt A Watts Figure 7. Amperes 1.400 1.200 1.000 0.800 0.600 0.400 0.200 0.000 0.0 ST3300655FC CURRENT/POWER vs THROUGHPUT (FC - 4GB) Random 8 Block Reads 20.00 18.00 16.00 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 50.0 100...
To obtain operating power for a drive in 4 Gbit operation is 13.3 watts (45.4 BTUs per hour). ST3300655FC DC current and power vs. input/output operations per hour, multiply watts by 3.4123. 6.3 Power dissipation ST3300655FC Typical power dissipation under idle conditions in your system on the .../Os per Second Power (watts) 5Volt A 12 Vo lt A Watts Figure 7. Amperes 1.400 1.200 1.000 0.800 0.600 0.400 0.200 0.000 0.0 ST3300655FC CURRENT/POWER vs THROUGHPUT (FC - 4GB) Random 8 Block Reads 20.00 18.00 16.00 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 50.0 100...
Cheetah 15K.5 FC Product Manual
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...Gbit 30 Cheetah 15K.5 FC Product Manual, Rev. input/output operations per hour, multiply watts by 3.4123. F ST3146855FC Typical power dissipation under idle conditions in your system on the vertical axis. Amperes 1.400 1.200 1.000 0.800 0.600 0.400 0.200 0.000 0.0 ST3146855FC CURRENT/POWER vs THROUGHPUT ...and read operations, refer to the following I/O rate curve (see Figure 7). ST3146855FC DC current and power vs. Locate the typical I /Os per hour). To obtain operating power for a drive in 4 Gbit operation is 10.56 watts (36.0 BTUs per Second Power (watts) 5Volt A ...
...Gbit 30 Cheetah 15K.5 FC Product Manual, Rev. input/output operations per hour, multiply watts by 3.4123. F ST3146855FC Typical power dissipation under idle conditions in your system on the vertical axis. Amperes 1.400 1.200 1.000 0.800 0.600 0.400 0.200 0.000 0.0 ST3146855FC CURRENT/POWER vs THROUGHPUT ...and read operations, refer to the following I/O rate curve (see Figure 7). ST3146855FC DC current and power vs. Locate the typical I /Os per hour). To obtain operating power for a drive in 4 Gbit operation is 10.56 watts (36.0 BTUs per Second Power (watts) 5Volt A ...
Cheetah 15K.5 FC Product Manual
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... the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on any drive part. Air flow may degrade AFR. F 31 ST373455FC CURRENT/POWER vs THROUGHPUT (FC - 4GB) Random 8 Block Reads 1.400 14.00 5Volt A 12 Volt A 1.200 12...HDA case temperatures limits are referenced to meet specifications. Cheetah 15K.5 FC Product Manual, Rev. Altitude and atmospheric pressure specifications are met, the drive meets all specifications over a 41°F to 131°F (5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of...
... the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on any drive part. Air flow may degrade AFR. F 31 ST373455FC CURRENT/POWER vs THROUGHPUT (FC - 4GB) Random 8 Block Reads 1.400 14.00 5Volt A 12 Volt A 1.200 12...HDA case temperatures limits are referenced to meet specifications. Cheetah 15K.5 FC Product Manual, Rev. Altitude and atmospheric pressure specifications are met, the drive meets all specifications over a 41°F to 131°F (5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of...