HP StorageWorks 500 Modular Smart Array - Manual (Page 79)

Configuration and Utilities
4-16 HP StorageWorks Modular Smart Array 500 System User Guide
NOTE: A failed status can occur on drives protected by fault tolerance if two or more
physical drives fail concurrently.
Some status messages are available without pressing the F3 key. For example, on the
Main menu, the FAILED status appears next to the logical drive that has failed.
EXPANDING and REBUILDING appear next to the array in which the activity is
occurring.
Handling Disk Drive Failures
If the MSA500 controller was configured with hardware fault tolerance, complete the
following steps after a disk drive failure.
1. Determine which physical drive failed. On hot-plug drives in a ProLiant server or
storage system, failure is indicated by an amber drive failure LED on each drive
tray.
2. If the unit containing the failed drive does not support hot-plug drives, perform a
normal system shutdown.
3. Remove the failed drive and replace it with a drive that is of the same capacity.
For hot-plug drives, after you secure the drive in the bay, the LEDs on the drive
each flash once in an alternating pattern to indicate that the connection was
successful. The online LED flashes, indicating that the controller recognized the
drive replacement and began the recovery process.
4. Power up the server, if applicable.
5. The MSA500 controller firmware reconstructs the information on the new drive,
based on information from the remaining physical drives in the logical drive.
While reconstructing the data on hot-plug drives, the online LED flashes. When
the drive rebuild is complete, the online LED is illuminated.
6. NetWare cannot detect a single physical drive failure when using hardware-based
fault tolerance; NetWare determines that the data is still valid and accessible
during the rebuilding process. However, the driver knows that a physical drive
has failed. A message is printed on the console notifying the user that a physical
drive is in a degraded state. CPQONLIN will also show the drive has failed.