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

Heavy load te

sting

Heavy load testing produced very similar results to the light load testing. The latencies and delays during

the ﬁrmware upgrade event were signiﬁcantly higher, however. Again, the applications reported no

errors of any kind during the ﬁrmware upgrade.

During the heavy load phase, two LoadSim client machines were necessary to drive the number of users.

The latency score for both servers reached a maximum of ~5000ms, d uring the ﬁrmware upgrade. See

Figure 15. This latency translated into queued messages on the Exchange server and in LoadSim. After

the ﬁrmware upgrade completed, however, the latency dropped back to normal and all queued messages

drained. The ﬁrmware upgrade lasted approximately six to ten minutes.

Fig

ure 15 Heavy load on Exchang e 2003

HP StorageWorks Enterprise Virtual Array online ﬁrmware upgrade best practices