StorageWorks Wide Expansion Storage Pedestal
4–6
Order Number: EK–SMCPC–UG. A01
Figure 4–5 Removing a Storage Device
4.3
Replacing a Power SBB
You need to replace a power supply or battery backup unit (BBU) when the LEDs
indicate a fault condition as outlined in Tables 4–1, 4–2, and 4–3.
The hot-swapping method of replacing a power supply may be used when there are two
power supplies. This method allows you to remove the defective power supply while the
other power supply furnishes dc power to the pedestal.
The input power for each dc power supply is controlled by a switch on the ac distribution
unit. Setting this switch to off removes power from all power supplies in the pedestal. To
remove power from a single power supply, simply disconnect the power cable from that
power supply and remove the unit.
NOTE
The BBU does not provide power for the operation of a
storage device. It only provides power for protecting data.
4.3.1 Replacing a Primary Pedestal (Non-Redundant) Power Supply
Perform the following procedure to replace a pedestal primary power supply:
1. Power down the pedestal by setting the power switch on the ac distribution to off and
remove the input power cable from the power supply.
2. Remove the front bezel using the procedure in Paragraph 4.5.1.
