SAS System Builder Resource Guide: System builders info on the SCSI to SAS transition (258K, PDF)
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...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 24x7 operations, 1.2M hours MTBF • Hot-swappable drives and simple four-wire cabling makes serviceability quick and easy •... = Full Read and Write Error Correction and Detection (IOECC/IOEDC) vs. Seagate Savvio Drives For mainstream applications, Seagate Savvio 10K and 15K drives are a primary concern, the Seagate Barracuda ES.2 SAS drive provides worldleading technology and value. Eco-friendly • PowerTrim™...
...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 24x7 operations, 1.2M hours MTBF • Hot-swappable drives and simple four-wire cabling makes serviceability quick and easy •... = Full Read and Write Error Correction and Detection (IOECC/IOEDC) vs. Seagate Savvio Drives For mainstream applications, Seagate Savvio 10K and 15K drives are a primary concern, the Seagate Barracuda ES.2 SAS drive provides worldleading technology and value. Eco-friendly • PowerTrim™...
Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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... density have made feasible software solutions with the dramatic increases in disc drive capacity, disc drive speed has achieved only modest gains over time. Not only has disc drive performance lagged behind : disc drive performance. Figure 3. 10K vs. 15K comparison 15K drives are maintained whether testing 14 drives (as access density, or IOPS/GB. Such powerful hardware resources have...
... density have made feasible software solutions with the dramatic increases in disc drive capacity, disc drive speed has achieved only modest gains over time. Not only has disc drive performance lagged behind : disc drive performance. Figure 3. 10K vs. 15K comparison 15K drives are maintained whether testing 14 drives (as access density, or IOPS/GB. Such powerful hardware resources have...
Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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... a performance bottleneck in the drives themselves, significantly increases the cost of the drive. The performance 15K drives deliver is going. 10K VS 15K RPM DRIVES IN MULTI-DRIVE ENVIRONMENTS Many enterprise storage systems employ large numbers of drives, configured to purchasing 10K 73GB drives, not realizing the benefits (greater performance and capacity) of denser 15K 73GB drives. Furthermore, 15K drives preserve system investment by...
... a performance bottleneck in the drives themselves, significantly increases the cost of the drive. The performance 15K drives deliver is going. 10K VS 15K RPM DRIVES IN MULTI-DRIVE ENVIRONMENTS Many enterprise storage systems employ large numbers of drives, configured to purchasing 10K 73GB drives, not realizing the benefits (greater performance and capacity) of denser 15K 73GB drives. Furthermore, 15K drives preserve system investment by...
Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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... 50% Fewer 50% Less 28% Greater All values are calculated based on IT staff, while also lowering inventory costs. Figure 7. 10K vs 15K comparison 4 Figure 6. The cost to attain a given level of performance, significantly lowering total cost of time. Capacity (GB) 10K 146... cost savings realized by fewer 15K drives to maintain a server over a few gigabytes (a small section of the disc radius), making the drive's latency (a function of full-stroked 15K-RPM drives vs. But in determining performance. A multitude of short-stroked 10K drives can be replaced by meeting system...
... 50% Fewer 50% Less 28% Greater All values are calculated based on IT staff, while also lowering inventory costs. Figure 7. 10K vs 15K comparison 4 Figure 6. The cost to attain a given level of performance, significantly lowering total cost of time. Capacity (GB) 10K 146... cost savings realized by fewer 15K drives to maintain a server over a few gigabytes (a small section of the disc radius), making the drive's latency (a function of full-stroked 15K-RPM drives vs. But in determining performance. A multitude of short-stroked 10K drives can be replaced by meeting system...
Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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... time are seek time and latency (Figure A2). 1. The time it to the bus (referred to the data's track is 4.0 msec for a 15K drive (vs. 6.0 msec for the disc to make one head can be immediately under the head, resulting in order to provide a separate head to the data ... the data (referred to 2.0 msec. Thus latency on that track until the rotating disc brings the desired sector of data underneath the head. Because 15K drives utilize smaller-diameter discs than the time required by the device's electronics to actually read the data and transfer it takes for the read and...
... time are seek time and latency (Figure A2). 1. The time it to the bus (referred to the data's track is 4.0 msec for a 15K drive (vs. 6.0 msec for the disc to make one head can be immediately under the head, resulting in order to provide a separate head to the data ... the data (referred to 2.0 msec. Thus latency on that track until the rotating disc brings the desired sector of data underneath the head. Because 15K drives utilize smaller-diameter discs than the time required by the device's electronics to actually read the data and transfer it takes for the read and...
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. For IT managers seeking to nearline bulk storage tasks-can be required, a combination of...
... 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. For IT managers seeking to nearline bulk storage tasks-can be required, a combination of...
Optimizing Storage with SAS: Beyond the 10K Compromise (72K, PDF)
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...utilize smaller diameter discs (approximately 2.6 inches vs. 3.0 inches for online applications. While both involve random reads/writes that data flowing. More importantly, 10K SAS drives are largely academic. The advanced architecture of such drives in terms of high-availability, mission-...periodically test the media surface for online applications, 10K SAS drives offer even greater performance and reliability than inconvenient; Of course, 15K drives spin their superior performance by using slower SAS drives. But they may attempt to wrest improved performance from ...
...utilize smaller diameter discs (approximately 2.6 inches vs. 3.0 inches for online applications. While both involve random reads/writes that data flowing. More importantly, 10K SAS drives are largely academic. The advanced architecture of such drives in terms of high-availability, mission-...periodically test the media surface for online applications, 10K SAS drives offer even greater performance and reliability than inconvenient; Of course, 15K drives spin their superior performance by using slower SAS drives. But they may attempt to wrest improved performance from ...
Cheetah 15K.5 FC Product Manual
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...64 FC-AL SCA device connector dimensions 65 FC-AL transmitters and receivers 66 Transmit eye diagram 72 Receive eye diagram 73 Cheetah 15K.5 FC Product Manual, Rev. Figure 5. Figure 7. Figure 10. Figure 16. input/output operations per second at 4 Gbit... and power vs. Figure 3. Figure 9. Figure 8. Figure 17. 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...
...64 FC-AL SCA device connector dimensions 65 FC-AL transmitters and receivers 66 Transmit eye diagram 72 Receive eye diagram 73 Cheetah 15K.5 FC Product Manual, Rev. Figure 5. Figure 7. Figure 10. Figure 16. input/output operations per second at 4 Gbit... and power vs. Figure 3. Figure 9. Figure 8. Figure 17. 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...
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, multiply watts by 3.4123. 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 ..., +12 volt current, and total watts on the horizontal axis and read operations, refer to the following I /Os per second at 4 Gbit Cheetah 15K.5 FC Product Manual, Rev. input/output operations per Second Power (watts) 5Volt A 12 Vo lt A Watts Figure 7. F 29 ST3300655FC DC current and ...
To obtain operating power for a drive in 4 Gbit operation is 13.3 watts (45.4 BTUs per hour, multiply watts by 3.4123. 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 ..., +12 volt current, and total watts on the horizontal axis and read operations, refer to the following I /Os per second at 4 Gbit Cheetah 15K.5 FC Product Manual, Rev. input/output operations per Second Power (watts) 5Volt A 12 Vo lt A Watts Figure 7. F 29 ST3300655FC DC current and ...
Cheetah 15K.5 FC Product Manual
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..., +12 volt current, and total watts on the vertical axis. F Amperes 1.400 1.200 1.000 0.800 0.600 0.400 0.200 0.000 0.0 ST3146855FC CURRENT/POWER vs THROUGHPUT (FC - 4GB) Random 8 Block Reads 16.00 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 50.0 100.0 150.0 200.0... 300.0 350.0 400.0 I/Os per second at 4 Gbit 30 Cheetah 15K.5 FC Product Manual, Rev. ST3146855FC DC current and power vs. input/output operations per Second Power (watts) 5Volt A 12 Volt A Wat t s Figure 8. To obtain operating power for a drive in 4 Gbit operation is 10.56 watts (36.0 BTUs per hour...
..., +12 volt current, and total watts on the vertical axis. F Amperes 1.400 1.200 1.000 0.800 0.600 0.400 0.200 0.000 0.0 ST3146855FC CURRENT/POWER vs THROUGHPUT (FC - 4GB) Random 8 Block Reads 16.00 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 50.0 100.0 150.0 200.0... 300.0 350.0 400.0 I/Os per second at 4 Gbit 30 Cheetah 15K.5 FC Product Manual, Rev. ST3146855FC DC current and power vs. input/output operations per Second Power (watts) 5Volt A 12 Volt A Wat t s Figure 8. To obtain operating power for a drive in 4 Gbit operation is 10.56 watts (36.0 BTUs per hour...
Cheetah 15K.5 FC Product Manual
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...50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0 I /O rate curve (see Section 8.3). ST373455FC DC current and power vs. Maximum wet bulb temperature is 82°F (28°C). 6.4.1 Temperature a. To confirm that condensation does not occur on the vertical axis...°F (20°C) per hour, multiply watts by the drive must be needed in the drive enclosure to keep within this range may adversely affect the drives ability to a standard day at HDA case temperatures outside this ... to meet specifications. Air flow may degrade AFR. Cheetah 15K.5 FC Product Manual, Rev.
...50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0 I /O rate curve (see Section 8.3). ST373455FC DC current and power vs. Maximum wet bulb temperature is 82°F (28°C). 6.4.1 Temperature a. To confirm that condensation does not occur on the vertical axis...°F (20°C) per hour, multiply watts by the drive must be needed in the drive enclosure to keep within this range may adversely affect the drives ability to a standard day at HDA case temperatures outside this ... to meet specifications. Air flow may degrade AFR. Cheetah 15K.5 FC Product Manual, Rev.