Replacing The Drives One At A Time - IBM TotalStorage DS4100 Installation, User's, And Maintenance Manual

10. Check the green Drive activity LED and the amber Drive fault LED below the
11. Use the DS4000 Storage Manager client to configure the new drives. See the
12. Restore the data from backup to all the drives.

Replacing the drives one at a time

Use this procedure to replace all the drives one at a time. You cannot use this
procedure on RAID 0 logical drives (use the procedure in "Replacing all drives at
the same time" on page 84).
Note: If your storage subsystem has hot spares assigned, you might want to
To replace the drives one at a time, perform the following steps:
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IBM TotalStorage DS4100 Storage Server: Installation, User's, and Maintenance Guide
b. You must turn on the expansion units before the storage server. The
controllers might not recognize the correct configuration if the drives are
powered up after the storage server. For instructions on powering up the
expansion units, see the expansion-unit documentation.
c. Turn on the power to the storage server; then restart or turn on the power
to the host.
9. Turn on the power to each device, based on the power-on sequence in step 8
on page 85. To turn on power to the storage server, turn on the power-supply
switches on the back of the storage server. You must turn on both
power-supply switches to take advantage of the redundant power supplies.
new drive CRUs.
Make sure that the Drive activity LEDs are on and the Drive fault LEDs are off.
Note: The Drive fault LEDs might flash intermittently while the drives spin up.
v If the Drive activity LED is off, the drive CRU might not be installed correctly.
Remove the drive CRU, wait 30 seconds, and then reinstall it.
v If the Drive fault LED stays on or the Drive activity LED stays off, the new
drive might be faulty. See the DS4000 Storage Manager client online Help
for problem determination.
DS4000 Storage Manager client online Help for detailed instructions.
unassign the hot spares while you perform this procedure. If you do not,
reconstruction might start on the hot spare before you insert the new drive.
The data on the new drive is still rebuilt, but the process takes longer for
each drive. Remember to reassign the hot spares when you are finished with
this procedure.
1. Read the following information:
v "Adding larger-capacity drives" on page 83, particularly the paragraphs that
discuss the differences between the two possible upgrade procedures
v Your software documentation regarding drive upgrades and installation
v The documentation that comes with the new drives
Read all precautionary notes, kit instructions, and other information. Kit
instructions often contain the most current information regarding the drives
and their installation, plus upgrade or servicing procedures. Compare the kit
instructions with this procedure to determine if you need to modify this
procedure.
2. Use the DS4000 Storage Manager client to check the status of the unit.
Correct any problems that are reported.
3. Back up the data on the drives that you are replacing.