Dell POWEREDGE R710 - Manual (Page 116)

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Installing System Components
Figure 3-23. Storage Controller Card Cabling (Four 3.5-inch Hard Drive Chassis)
RAID Battery
The information in this section applies only to systems with the optional
PERC controller card.
Removing a RAID Battery
1 Pull back gently on the right edge of the battery bay and draw out the
RAID battery from the battery carrier.
2 Disconnect the cable between the RAID battery and the storage controller
card. See Figure 3-24.
1 RAID battery (PERC only) 2 SAS A connector on backplane
3 cable retention bracket 4 integrated storage controller card
5 SAS_0 connector 6 RAID battery connector (PERC only)
3 2 4 1 5 6