APC RAID Subsystem SCSI-SATA II User's Guide download pdf (Page 33)

Solving Problems

96-00290-001 Rev. A1 DataDirect Networks StorageScaler 2460 User Guide | 27

4.4 Replacing an APC Unit

If you remove a failed APC unit, you must replace it as quickly as possible (within five

minutes) to maintain correct airflow and cooling. Failed APC units can be hot-swapped.

If you do not have a replacement APC unit available for immediate installation, you must

power off the enclosure.

NOTE :

If the enclosure is still operational, the failed APC can be left installed to

maintain proper cooling until a replacement unit is available. The fans in

both APCs will continue to run at high speed until the APC unit is replaced.

To replace an APC unit:

1. Power off the failed APC unit and remove the power cable.

the enclosure is powered on, the fans in the other APC unit switch to high

speed to

compensate for the reduced airflow.

2. Push the release tab to the right and rotate the handle down (Figure

32).

Figure 32. Release Tab and Handle on APC Unit

Handle

Release T ab

3. Slide the APC unit out of the bay. Do not use the release tab as a handle to lift or carry

the APC unit.

4. Gently slide a new APC unit into the bay until the handle rotates up and the release tab

clicks into place.

5. Reconnect the power cable.

6. Turn on the APC unit.

When proper airflo

w returns, the cooling fans

in the other APC unit return to their

normal speed.

To avoid electrical shock, do NOT insert a

ny instruments or tools

into the open APC slot.

Warning

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APC RAID Subsystem SCSI-SATA II User's Guide Page 33