HP 504062-B21 Performance factors for HP ProLiant Serial Attached Storage (SAS - Page 7
Throughput performance: random operations of non-NCQ SATA, NCQ SATA, and SAS
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Figure 3. Throughput performance: random operations of non-NCQ SATA, NCQ SATA, and SAS 2-drive array with HP Smart Array P400 Controller, RAID 1 THROUGHPUT (IOPS) 1000 Random Opeations, RAID 1 (128 KB) IOMETER 07.30.2004 900 800 700 600 500 400 300 200 100 0 4KB RANDOM READ 4KB RANDOM WRITE 4KB OLTP 8KB RANDOM READ 8KB RANDOM WRITE 8KB OLTP 64KB RANDOM READ 64KB RANDOM WRITE SATA, Non-NCQ 60-GB, 5.4K, 25/75 R/W cache SATA, NCQ 120-GB, 5.4K, 25/75 R/W cache SAS, 72-GB, 15K, 25/75 R/W cache 256 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 1 7
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Figure 3.
Throughput performance: random operations of non-NCQ SATA, NCQ SATA, and SAS
2-drive array with HP Smart Array P400 Controller, RAID 1
Random Opeations, RAID 1 (128 KB)
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4KB RANDOM READ
4KB RANDOM WRITE
4KB OLTP
8KB RANDOM READ
8KB RANDOM WRITE
8KB OLTP
64KB RANDOM READ
64KB RANDOM WRITE
THROUGHPUT (IOPS)
IOMETER 07.30.2004
SATA, Non-NCQ 60-GB, 5.4K, 25/75 R/W cache
SATA, NCQ 120-GB, 5.4K, 25/75 R/W cache
SAS, 72-GB, 15K, 25/75 R/W cache
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