Owners Manual

Table Of Contents
2. Take the affected controller offline.
3. Disconnect all the cables connected to the array.
4. Remove the RAID controller module.
5. Open the RAID controller module.
6. Loosen the screw that secures the backup battery unit to the RAID controller module.
7. Slide the backup battery unit in the direction of the arrow and lift it out of the RAID controller module.
Figure 22. Removing and installing the RAID controller module backup battery unit
a. screw
b. backup battery unit
Installing the RAID controller module backup battery unit
You must replace the RAID controller battery backup unit immediately to ensure the security of the data in the controller cache
memory.
CAUTION:
Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by
your warranty. Read and follow the safety instructions that are shipped with your product.
1. Align the backup battery unit with the slots on the RAID controller module.
2. Slide the backup battery unit toward the connector on the RAID controller module.
3. Tighten the screw that secures the backup battery unit to the RAID controller module.
4. Close the RAID controller module.
5. Install the RAID controller module.
6. Connect all the cables to the RAID controller and the storage array.
7. Use MD Storage Manager to check the status of all the storage arrays.
Power supplies
Your system supports two hot-swappable 1755 W power supply modules.
When two identical power supplies are installed, the power supply configuration is redundant. In redundant mode, power is
supplied to the system equally from both power supplies to maximize efficiency.
When one power supply module is removed or has failed, the power supply configuration is non-redundant. Power is supplied to
the system only by the single power supply module.
30
Installing and removing system components