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6. Use the procedures in “Replacing hot-swap drives” on page 48 to remove the
failed drive. Use the procedures in “Installing hot-swap drives” on page 46 to
install the new drives into the storage server.
The new drive 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 drive 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 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 storage-management software for problem
determination.
8. Use the storage-management software to monitor the status of the new drive
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 drive. In that case, use the host
software to determine if the data reconstruction is finished.
9. When reconstruction is finished on the new drive, repeat step 5 on page 52
through step 8 for each additional drive that you want to install.
10. Use the storage-management software to configure the additional space on the
new drives.
Working with hot-swap cooling fans
The storage server cooling system consists of two fan CRUs, each containing two
fans. The fan CRUs circulate air inside the unit by pulling in air through the vents
on the front of the drive CRUs and pushing out air through the vents in the back of
each fan CRU. See Figure 42 on page 54.
If two fans fail, or the fans cannot maintain an internal temperature below 70°C
(158°F), the power supplies in the unit will automatically shut down (an
over-temperature condition). If this occurs, you must cool the unit and restart it. See
“Restoring power after an over-temperature shutdown” on page 38.
Attention: The fans in the storage server draw in fresh air and force out hot air.
These fans are hot-swappable and redundant; however, when one fan fails, you
must replace the fan CRU within 48 hours to maintain redundancy and optimum
cooling. When you replace the failed fan CRU, be sure to install the second fan
CRU within 10 minutes to prevent any overheating due to the lack of the additional
fan CRU.
Chapter 5. Installing and replacing components 53