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10. Use the DS Storage Manager software to configure the additional space on the
Verifying the Link Rate setting
If a link rate problem is indicated, use the following procedure to verify the Link
Rate setting.
A Link Rate switch is located on the front of the storage expansion enclosure as
shown in Figure 53 on page 104. The Link Rate indicator LEDs are located on the
Attention:
Removing the wrong E-DDM can cause data loss. Make sure that
you remove only the failed E-DDM CRU. The Drive fault LED below the failed
E-DDM CRU should be on.
If you remove an active E-DDM accidentally, wait at least 30 seconds and then
reinstall it. Because you failed two E-DDMs in a RAID array, the array might be
marked failed by the controller. This array will not be available to the host for
I/O. See the DS Storage Manager software for further recovery instructions. Do
not attempt to replace any E-DDMs until the array is brought back to optimal
state.
6. Use the procedures in "Replacing hot-swap hard disk drives" on page 95 to
remove the failed drive. Use the procedures in "Installing hot-swap hard disk
drives" on page 94 to install the new E-DDMs into the EXP810.
The new E-DDM automatically reconstructs the data after you install it in the
drive slot.
During data reconstruction, the amber Drive fault LED might come on for a few
minutes, then turn off when the green Drive activity LED begins flashing. A
flashing Drive activity LED indicates that data reconstruction is in progress.
Note: If your storage subsystem has active hot spares, data might not start
copying to the new E-DDM until the data is reconstructed on the hot
spare. This increases the time that is required to complete the
procedure.
7. Check the green Drive activity LED and the amber Drive fault LED above the
new E-DDM 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 E-DDMs spin
up.
v If the Drive activity LED is off, the E-DDM CRU might not be installed
correctly. Remove the E-DDM 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
E-DDM might be faulty. See the DS Storage Manager software for problem
determination.
8. Use the DS Storage Manager software to monitor the status of the new
E-DDM and the progress of the data reconstruction. Wait for data
reconstruction to finish (the Drive activity LED stops flashing.)
Note: The Drive activity LED will continue to flash after reconstruction is
finished if there is I/O activity to that E-DDM. In that case, use the host
software to determine if the data reconstruction is finished.
9. When reconstruction is finished on the new E-DDM, repeat step 5 on page 100
through step 8 for each additional E-DDM that you want to install.
new E-DDMs.
Chapter 5. Installing and replacing components
101
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