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
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
10.Check the green Drive activity LED and the amber Drive fault LED below the 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.
11.Use the DS4000 Storage Manager client to configure the new drives. See the DS4000 Storage Manager client online Help for detailed instructions.
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 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.
To replace the drives one at a time, perform the following steps:
1. Read the following information:
v“Adding
vYour software documentation regarding drive upgrades and installation
vThe 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.
86IBM TotalStorage DS4100 Storage Server: Installation, User’s, and Maintenance Guide
