Dell PowerVault DL2000 Hardware Owner's Manual page 119

NOTE:
To properly reinstall the hard drives, ensure that you record which
hard drive you remove from which bay.
5 Disconnect the SAS cable(s) and control panel cable from the backplane
connectors. See "SAS Controller Daughter Card Cabling Guidelines" on
page 87 and "Removing the Control Panel Assembly" on page 122.
6 If applicable, remove the storage controller daughter card. See "Removing
a SAS Controller Daughter Card" on page 87.
7 Remove the cooling shroud. See "Removing the Cooling Shroud" on
page 80.
8 Remove the fans. See "Removing a System Fan" on page 78
9 Remove the fan bracket. See "Removing the Fan Bracket" on page 81.
10 Remove the SAS backplane board:
Pull the SAS-backplane board release pin. See Figure 3-26.
a
While pulling the release pin, tilt the backplane board toward the back
b
of the system.
Lift the backplane board from its securing tabs and remove the
c
backplane board from the chassis.
Installing System Components
119