8x00 Enterprise Virtual Array updating product software guide (XCS 6.200) (5697-7958, February 2009)

Figure 6 S am p le SAN Visibility report

Selecting an appropriate time to perform an online upgrade

To ensure the success of an online upgrade, selecting the appropriate time is essential. Because the

online ﬁrmware upgrade is performed while host I/Os are being serviced, the I/O load can impact the

upgrade process. Selecting a period of low I/O activity will ensure the upgrade completes as quickly as

possible, and will avoid disruptions to host and applications due to timeouts.

When performing an online upgrade, select a time period that meets the following criteria:

• I/Ospersecond(IOPS)shouldbelessthan7000

• I/O throughput should be less than 70 MB/s

NOTE:

The above values apply when upgrading the EVA4x00/6x00/8x00 storage systems. These values do

not apply to EVA3000/5000 storage systems.

Analyzing storage system I/O using HP Command View EVAPerf

The HP Command View EVAPerf tool included with HP Command View EVA can be used to gather and

analyze statistics on storage system utilization. This section provides recommendations on using HP

Command View EVAPerf to gather statistics to help identify periods of low storage system activity.

If you are unfamiliar with HP Command View EVAPerf, see the “Monitoring array performance” chapter

of the HP StorageWorks Command View EVA user guide for m ore information. See Table 3 for the

link to this guide.

HP Stora g eWorks 4x00/6x00/8x0 0 Enterprise Virtual Array updating product software guide (XCS 6.200)