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HP StorageWorks Enterprise Virtual Array Online Firmware Upgrade Best Practices (5697-6388, January 2007)

ManualsBrandsHP ManualsStorageHP EVA3000 Disk Array
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Figure 14 shows the number of I/Os per second on the EVA 4000, achieving a 60-40 split between
reads and writes across a representative host p ort. During the firmware upgrade, I/Os dropped off
significantly, but returned to their prior levels immediately after the upgrade event completed.
Figure 1
4LightloadonEVA,I/Ospersecond
34
Effect of online firmware upgrade on application resiliency