HP StorageWorks Enterprise Virtual Array 3000/5000 updating product software guide (VCS 3.110) (5697-7959, February 2009)

Figure 8 S am p le SAN Visibility report

Selecting an appropriate time to perform an online upgrade

To ensure the success of an online upgrade (controller and/or disk drive ﬁrmware), selecting the

appropriate time is essential. Because the online ﬁrmwareupgradeisperformedwhilehostI/Osare

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. To perform an online disk drive ﬁrmware, you must be running HP Command View

EVA 6.0 or later.

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

• I/Ospersecond(IOPS)shouldbelessthan4000

• I/O throughp ut should be less than 40 MB/s

See the online ﬁrmware upgrade white paper for graphs to help determine the appropriate time.

NOTE:

The above values apply when upgrading the EVA3 000/5000 storage systems. These values do not

apply to EVA 4 000/6000/8000 storage systems.

Analyzing storage system I/O using HP Command View EVAPerf

The HP Command View EVAPer f 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 stora ge 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 more information. See Table 2 for the

link to this guide.

HP StorageWorks Enterprise Virtual Array 3000/5000 updating product software guide (VCS 3.110)