Resynchronizing A Backup Boot Rdr Disk; Recovering And Replacing Rdr Disks - NEC Express5800/320Ma Administrator's Manual

Using RDR for Fault Tolerance
2. Select Resynchronize This Physical Disk From RDR Virtual Disk.
A message appears, indicating a successful start of the command. See step
"Read-load Balancing" on page 4-7
the resynchronization process.
See "Disk Failures during Resynchronization" on page 4-5
do if the source RDR virtual disk fails during resynchronization.

Resynchronizing a Backup Boot RDR Disk

1. Verify that the original partner disk of the backup boot disk is inserted into its
original slot in the storage enclosure.
2. Reinsert the backup boot disk into its original slot in the storage enclosure.
The backup boot disk automatically resynchronizes with the original partner. The
command takes some time to run. See step
page 4-7
process.

Recovering and Replacing RDR Disks

In your disk-management tool, if the status of an RDR disk appears as Offline,
Missing, or Online (Errors), you can try to recover the disk manually. Verify that the
disk is securely seated in the enclosure and that it has power. Perform the following
procedures to recover the disk.
To recover an RDR disk
1. Delete the RDR configuration on the
enclosure.
2. Replace the defective disk and
In the unlikely event of a system failure resulting from disk failures, restore the system
by performing one of the following procedures, as appropriate:
•
Restore the system by using a backup system disk. See the discussion of creating
spare bootable hard disks in the Express5800/320Ma: Software Installation and
Configuration Guide for information.
•
Reload the Express5800/320Ma System software, as described in the
Express5800/320Ma: Software Installation and Configuration Guide.
4-18 Express5800/320Ma: System Administrator's Guide
for a description of how to verify completion of the resynchronization
N O T E
Disregard any "Unsafe Removal of Device" messages that
appear when you remove an internal physical disk from
the enclosure.
for a description of how to verify completion of
7 in "Read-load Balancing" on
disk, and then physically remove it from the
add the disk to an RDR virtual
for instructions on what to
disk.
7 in