HP XP Racks - Manual (Page 53)

Determining which basic recovery procedures to use
Determining which basic recovery procedures to use involves analyzing the information in the
system information messages (SIM) and path failure system messages to identify the type of failure,
then selecting the correct procedure based on the type of failure.
Each of the following basic types of failures uses a different set of recovery procedures:
•
Blocked volumes
•
Quorum disk
•
Power outage
•
Resynchronization of volume pairs
•
Owner or non-owner path failures
Selecting Procedures
Make sure you have identified the type of failure that occurred by using the system information
messages (SIM) and path failure system messages.
For more information, see “Using system messages to check for failures” .
1. Analyze these failure messages to determine which basic type of failure occurred. The failure
types are: blocked volumes, quorum disk, power outage, or failures that can be resolved by
resynchronizing affected pairs.
2. Use the decision tree in the following figure to select the correct set of procedures. Use the
links below the figure to go to the appropriate procedures.
1. “Recovery from blocked pair volumes” (page 54)
2. “Recovery from quorum disk failure” (page 57)
3. “Recovery from power failure” (page 59)
4. “Recovery from failures using resynchronization” (page 62)
Determining which basic recovery procedures to use 53