User guide

Compaq StorageWorks RAID Array 4000 User Guide
Do not operate the RA4000 for extended periods of time with either
power supply location open. Internal cooling air flow will be disrupted without a
power supply or blank cover installed in both locations. This could cause
overheating of internal components and possible data loss. In Redundant Power
Supply systems, retain the blank power supply cover for reuse in case it is
necessary to remove one of the supplies.
3. With the handle fully open, insert the replacement power supply into the
opening and slide it in along the rails as far as it will go. It may be
necessary to wiggle the power supply from side to side, slightly, if any
resistance is felt along the rails.
4. Pivot the handle closed until it snaps into place. This secures the power
supply in the chassis. See Figure 4-24.
5. Plug the power cord into the new power supply.
The status LEDs on both power supplies and the fault LEDs on the front panel
of the RA4000 should now be green, indicating that power supply redundancy
has been restored.
If the LED on the Fan Assembly is amber, a problem has been detected in at
least one of the three fans in the array. The entire module is hot-pluggable and
can be replaced without affecting normal system operation.
Do not allow the RA4000 to operate for more than five minutes
without a working fan array module in place. Operation longer than this with no
forced air cooling, especially in systems with a full complement of drives, may
permanently damage the drives or electronics in the RA4000 and result in data
loss.
If the temperature gets too high, the RA4000 will automatically shut down the
power supply and redundant power supply, if installed.
When hot-plugging the fan assembly, be sure to have everything ready before
you begin the procedure, which should normally take no more than one minute.