Dell POWEREDGE M915 - Manual (Page 274)

274 Installing Blade Components
Hard-Drive Backplane
NOTE: A hard-drive backplane must be installed in each blade to maintain proper
airflow, even when the blade is in a diskless configuration.
NOTE: PowerEdge M600, M610, M610x, M710, M710HD, M805, M905, and M910
have one hard-drive backplane and PowerEdge M915 has two hard-drive
backplanes. To locate the hard-drive backplane, see "Inside the System" on
page 162.
Follow these steps to remove and replace the hard-drive backplane:
1 Remove the blade. See "Removing a Blade" on page 155.
2 Open the blade. See "Opening the Blade" on page 159.
NOTE: If you are removing more than one hard drive, label them so you can replace
them in their original locations.
NOTE: You must remove all hard drives from a backplane before removing it.
3 Remove the hard drive(s). See "Removing a Hard Drive" on page 269.
4 Lift the latches at each end of the backplane and lift the backplane from
the blade chassis. See Figure 3-60.