Performance factors for HP ProLiant Serial Attached Storage (SAS)
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Performance factors for HP ProLiant Serial Attached Storage (SAS) technology brief Abstract...2 Introduction...2 HDD controller technologies ...2 HDD interface technologies ...3 Key HDD design parameters for enterprise environments 3 SAS use for enterprise systems...4 HDD performance comparisons ...5 Performance comparison between SATA and SAS drives 5 Performance comparisons between SAS drives 8 Performance comparisons based on form factor 8 Performance comparisons based on platter speed 11 SAS drive specifications ...13 Conclusion...13 For more information...14 Call to action ...14
Performance factors for HP ProLiant Serial Attached Storage (SAS) technology brief Abstract...2 Introduction...2 HDD controller technologies ...2 HDD interface technologies ...3 Key HDD design parameters for enterprise environments 3 SAS use for enterprise systems...4 HDD performance comparisons ...5 Performance comparison between SATA and SAS drives 5 Performance comparisons between SAS drives 8 Performance comparisons based on form factor 8 Performance comparisons based on platter speed 11 SAS drive specifications ...13 Conclusion...13 For more information...14 Call to action ...14
Performance factors for HP ProLiant Serial Attached Storage (SAS)
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... systems queue depth rarely exceeds 1, but in an enterprise server environment a large number of users generating requests can increase with an HP Smart Array P800 controller using RAID 5. Performance comparisons based on platter speed The charts in Figure 7 compare sequential read performance between... 15K SFF SAS drives operating as a 6-drive array with greater queue depths, user interaction response of the system is the number of commands waiting to be serviced by the charts, 15K drives show the drive array performance for sequential reads per block size at a specific queue (Q) depth....
... systems queue depth rarely exceeds 1, but in an enterprise server environment a large number of users generating requests can increase with an HP Smart Array P800 controller using RAID 5. Performance comparisons based on platter speed The charts in Figure 7 compare sequential read performance between... 15K SFF SAS drives operating as a 6-drive array with greater queue depths, user interaction response of the system is the number of commands waiting to be serviced by the charts, 15K drives show the drive array performance for sequential reads per block size at a specific queue (Q) depth....
Performance factors for HP ProLiant Serial Attached Storage (SAS)
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... Read 512 KB Random Read 2000 1500 IOPS 1000 500 No. Also, overall performance scales with the block size set to eight drives, using RAID 5 with array size (number of drives 3 4 5 6 7 8 3 4 5 6 7 8 3 4 5 6 7 8 10K HDD & P400 controller 15K HDD & 6402 controller As indicated in this case). For...size should be configured for arrays of three to 128 KB. Random read performance of 10K and 15K SFF SAS drives for the specific application. 12 Figure 8. of drives). Note that performance is best when retrieving data blocks that are larger than the RAID 5 stripe size (128 ...
... Read 512 KB Random Read 2000 1500 IOPS 1000 500 No. Also, overall performance scales with the block size set to eight drives, using RAID 5 with array size (number of drives 3 4 5 6 7 8 3 4 5 6 7 8 3 4 5 6 7 8 10K HDD & P400 controller 15K HDD & 6402 controller As indicated in this case). For...size should be configured for arrays of three to 128 KB. Random read performance of 10K and 15K SFF SAS drives for the specific application. 12 Figure 8. of drives). Note that performance is best when retrieving data blocks that are larger than the RAID 5 stripe size (128 ...
Performance factors for HP ProLiant Serial Attached Storage (SAS)
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...hard drive types are subject to -medium businesses (SMBs) or environments with SCSI or SATA drives that provides the best return on investment (ROI) for a listing and specifications of publication. SAS drive specifications Table 3 compares the seek time and power consumption of SFF (2.5-inch) SAS drives available from HP at time of currently available SAS drives: http://h18004.www1.hp...Idle Maximum 36 GB/15K 0.20 ms 3.0 ms 7.0 ms 5.74 watts 7.25 watts 72 GB/10K 0.20 ms 4.0 ms 8.1 ms 5.96 watts 8.42 watts 72 GB/15K 0.20 ms 3.0 ms 7.0 ms 6.11 watts 8.29 watts NOTE: All drives listed In ...
...hard drive types are subject to -medium businesses (SMBs) or environments with SCSI or SATA drives that provides the best return on investment (ROI) for a listing and specifications of publication. SAS drive specifications Table 3 compares the seek time and power consumption of SFF (2.5-inch) SAS drives available from HP at time of currently available SAS drives: http://h18004.www1.hp...Idle Maximum 36 GB/15K 0.20 ms 3.0 ms 7.0 ms 5.74 watts 7.25 watts 72 GB/10K 0.20 ms 4.0 ms 8.1 ms 5.96 watts 8.42 watts 72 GB/15K 0.20 ms 3.0 ms 7.0 ms 6.11 watts 8.29 watts NOTE: All drives listed In ...