HP 3000 Enterprise Virtual Array - Manual (Page 89)

Types of disk failures
There are two types of disk failures:
• Hard failure: The disk is no longer functioning properly and has been assigned a failed status.
This type of failure is indicated by an operational state of
Failed in HP Command View EVA.
The amber fault status indicator on the disk is typically on.
• Impending failure: Although the disk is still functioning, errors have been detected that indicate
an impending failure. This type of failure is not accompanied by a failed status.
CAUTION:
A disk with an impending failure will appear to be operating normally in HP Command View
EVA, and the fault light on the disk will not be on. Therefore, it is important that you positively
identify the disk before performing the replacement. Work with the HP Solution Center to ensure
you identify the correct disk for replacement.
Checking system redundancy
Before replacing a disk, check the redundancy status of the entire storage system to ensure a disk can
be removed without impacting data availability.
CAUTION:
Do not proceed with the disk replacement until you are certain the storage system is redundant.
1. Open HP Command View EVA and click the icon of the storage system you want to check ( Figure 32 ).
2. On the Initialized Storage System Properties window, click Check Redundancy ( Figure 33 ).
3. If the system is redundant, continue with Verifying component failure .
If the system is not redundant, information is displayed indicating the cause of the lack of redundancy.
See the HP Command View EVA online help to interpret the information that is displayed. In this
situation, work with your HP call center agent to determine how to proceed.
HP StorageWorks 3000/5000 Enterprise Virtual Array user guide (VCS 4.xxx) 89