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11. Use the DS Storage Manager software to configure the new E-DDMs. See the
12. Restore the data from backup to all the E-DDMs.
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 E-DDMs at
the same time" on page 98).
Note: If your storage subsystem has hot spares assigned, you might want to
Attention:
reseating it to allow it to properly spin down. Failure to do so may cause undesired
events.
To replace the E-DDMs one at a time, perform the following steps:
100
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
v If the Drive fault LED stays on or the Drive activity LED stays off, the new
E-DDM might be faulty. See the DS Storage Manager software for problem
determination.
DS Storage Manager software 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 E-DDM is still rebuilt, but the process takes longer for
each E-DDM. Remember to reassign the hot spares when you are finished
with this procedure.
After you remove a E-DDM CRU, wait 70 seconds before replacing or
1. Read the following information:
v "Replacing multiple E-DDMs" on page 96, 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 DS Storage Manager software to check the status of the unit. Correct
any problems that are reported.
3. Back up the data in the arrays and logical drives that are configured using the
E-DDMs that you are replacing.
Attention:
When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling static-sensitive
devices, see "Handling static-sensitive devices" on page 30.
4. Unpack the new E-DDMs.
Set the E-DDMs on a dry, level surface away from magnetic fields. Save the
packing material and documentation in case you need to return them.
5. Use the DS Storage Manager software to ensure that the array that was
defined using these E-DDMs is in optimal (not degraded) state before manually
failing the first E-DDM you want to replace. If the array is in degraded state,
use the recovery procedures to bring the array into the optimal state.
Make sure of the following:
v You fail only one E-DDM
v The software status display shows a failed status for the appropriate E-DDM
v The amber Drive fault LED (on the front bezel below the E-DDM) is on
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