HP EVA P6000 Software Manual page 60

The disk drives are upgraded sequentially. Depending on the I/O load on the array, it can
take from 30 seconds to 3.5 minutes per drive to upgrade the firmware. The status is updated
at 45-second intervals.
CAUTION: Do not select an array to manage it during the disk drive upgrade. If you select
an array in the navigation pane to manage it, the disk drive upgrade stops. For example, if
the upgrade was completed on 10 of 27 drives when you selected the array, only those 10
drives have been upgraded. If you start another disk drive upgrade, the status box on the
status window displays NO for the 10 drives that have been upgraded, and the remaining
17 drives are not shown as upgraded. Proceed to upgrade the remaining drives.
Figure 32 Code Load Disk Drives On Line – status window
When all disk drives have been upgraded, the Code Load Disk Drives On Line – Page 3
window opens (Figure 33 (page 61)), indicating that the drives have been upgraded
successfully.
60 Upgrading the Enterprise Virtual Array