IBM 81Y4426 Arkusz Danych Pobierz pdf (Strona 8)

ServeRAID M5000 Series Performance Accelerator Key for IBM System x 8

RAID 5 random workload performance

In Figure 6, read performance in RAID 5 configurations demonstrates similar IOP performance as RAID 0.

When comparing RAID 5 write performance,

MegaRAID FastPath software demonstrates 2.5 times the IOP's performance over an identical

configuration with this feature disabled.

Figure 6. Performance benefits of having MegaRAID FastPath enabled (lighter color) versus disabled

(darker color) - RAID 5 random workloads

RAID 0 application performance

MegaRAID FastPath software significantly boosts server application performance levels for typical

workloads as well. MegaRAID controllers with MegaRAID FastPath software disabled are limited to

80,000 IOPs, whereas application performance improves by up to 45% with MegaRAID FastPath software

enabled (Figure 7).

Figure 7. Typical workloads - RAID 0

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IBM 81Y4426 Arkusz Danych Strona 8