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Using RDR for Fault Tolerance
4-18
Express5800/320Ma: System Administrator’s Guide
2. Select Resynchronize This Physical Disk From RDR Virtual Disk.
A message appears, indicating a successful start of the command. See step
7
in
“Read-load Balancing” on page 4-7
for a description of how to verify completion of
the resynchronization process.
See
“Disk Failures during Resynchronization” on page 4-5
for instructions on what to
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
7
in
“Read-load Balancing” on
page 4-7
for a description of how to verify completion of the resynchronization
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 disk
, and then physically remove it from the
enclosure.
N O T E
Disregard any “Unsafe Removal of Device” messages that
appear when you remove an internal physical disk from
the enclosure.
2. Replace the defective disk and
add the disk to an RDR virtual disk
.
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.
Summary of Contents for Express5800/320Ma
Page 1: ...NEC Solutions America Inc NR014W Express5800 320Ma System Administrator s Guide ...
Page 10: ...Tables x Express5800 320Ma System Administrator s Guide ...
Page 14: ...Preface xiv Express5800 320Ma System Administrator s Guide ...
Page 22: ...Windows Documentation 1 8 Express5800 320Ma System Administrator s Guide ...
Page 50: ...Performing ftSMC Tasks 3 14 Express5800 320Ma System Administrator s Guide ...
Page 78: ...Finding a Physical Disk 4 28 Express5800 320Ma System Administrator s Guide ...
Page 100: ...Security Configuration Wizard A 6 Express5800 320Ma System Administrator s Guide ...
Page 122: ...Index Index 8 Express5800 320Ma System Administrator s Guide ...