Dell PowerEdge RAID Controller 5i - Manual (Page 32)

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Hardware Installation and Configuration
Transferring a TBBU Between Controllers
The TBBU provides uninterrupted power supply to the memory module for up to 72 hours if power
supply is unexpectedly interrupted while cached data is still present. If the controller fails as a result of
a power failure, you can move the TBBU to a new controller and recover the data. The controller that
replaces the failed controller must be devoid of any prior configuration.
CAUTION:
Only trained service technicians are authorized to remove the system cover and access any of the
components inside the system. Before performing any procedure, see your Product Information Guide for
complete information about safety precautions, working inside the computer, and protecting against
electrostatic discharge.
Perform the following steps to replace a failed controller with data in the TBBU:
1 Turn off the system and disconnect the physical disks.
2 Remove the controller that has the TBBU currently installed from the system.
3 Remove the TBBU from the controller.
4 Insert the TBBU into the new controller.
See "Installing the Transportable Battery Backup Unit (TBBU) for PERC 5/E" on page 27.
5 Insert the new controller into the system.
See the relevant sections on installing controllers under "Installing the PERC 5/E Adapter" on page 25.
6 Turn on the system.
The controller flushes the cache data to the virtual disks.
Removing the PERC 5/E Adapter
This section describes how to remove the PERC 5/E from a system.
NOTE:
In the event that the SAS cable is accidentally pulled when the system is operational, reconnect the cable
and refer to the online help of your storage management application for the required recovery steps.
1 Perform a controlled shutdown on the system in which the PERC 5/E is installed, as well as any
attached storage enclosures.
2 Disconnect the system from the electrical outlet and remove the system cover.
CAUTION:
Running a system without the system cover installed may cause damage due to improper cooling.
NOTE:
For more information on removing and reinstalling the system cover, see the Hardware Owner’s
Manual that shipped with the system.
3 Locate the PERC 5/E in the system and disconnect the external cables from the PERC 5/E.
4 Remove any retention mechanism such as a bracket screw that may be holding the PERC 5/E in the
system and gently lift the controller from the system’s PCI-E slot. See Figure 3-5.
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