Replacing The Drives One At A Time - IBM TotalStorage DS4300 Installation, User's, And Maintenance Manual

10. Check the green Drive activity LED and the amber Drive fault LED below the
11. Use the Storage Manager client to configure the new drives. See the Storage
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 125.)
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:
8. After you install all the new drives, check the system documentation for the
hardware devices that you intend to power up, and then determine the proper
startup sequence. Use the following power-on sequence, where applicable:
a. Turn on the power to the supporting devices (for example, Ethernet
switches and management stations) before you turn off power to the
storage subsystem.
b. You must turn on the storage expansion enclosures before the storage
subsystem. The controllers might not recognize the correct configuration if
the drives are powered up after the storage subsystem. For instructions on
powering up the storage expansion enclosures, see the storage expansion
enclosure documentation.
c. Turn on the power to the storage subsystem; 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.
To turn on power to the storage subsystem, turn on the power-supply switches
on the back of the storage subsystem. 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 70 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 Storage Manager client for problem
determination.
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 124, 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
Chapter 5. Installing and replacing components
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