IBM System Storage DS5020, Installation, User'S, And Maintenance Manual

Page: 68 / 260

v
The lip on the rail lines up with the bottom of the storage subsystem (the 0U
boundary in Figure 14 on page 36).
5. Using a No. 2 Phillips screwdriver, loosen the two screws on the left support
rail that hold the two parts of the rail together. The support rails are marked as
left or right.
6. Hold the back of the rail against the inside of the rack-mounting flange. Make
sure that the rail mounting guide pins are in the correct holes.
7. Using the 5/16 (8 mm) hex nut driver, securely tighten the two M5 screws.
Note: Make sure that you use a washer when installing an M5 screw through
a
square hole on the rack-mounting flange.
8. Extend the rail to the front of the rack until it makes contact with the front
rack-mounting flange.
9. Securely tighten the M5 screws.
Note: Be sure to install the screw labeled install first in Figure 13 on page 35.
10. Securely tighten the two screws on the left support rail that hold the two parts
of the rail together.
11. Repeat step 5 through step 10 for the right support rail.
Note: Because the mounting holes on the rack are not always the same size
as the mounting screws, the lip of each of the support rails might not
line up evenly. Make minor adjustments as needed to make sure that
the lip of the left and right support rails are lined up evenly on the racks.
Failure to do so will cause the storage subsystem to fit unevenly in the
rack.
12. Continue with “Removing the CRUs.”
Installing the DS5020
This section provides instructions on installing the DS5020. The installation process
includes:
v “Removing the CRUs”
v
“Installing the DS5020 into a rack on the support rails” on page 42
v “Replacing the components” on page 44
Removing the CRUs
This section describes how to remove the CRUs to minimize the weight of the
DS5020 before you install it in the rack. However, if you have three or more people
available to lift and install the DS5020 in a rack, you might not find it necessary to
remove the CRUs before you install the DS5020. If this is the case, you can skip
the CRU removal instructions provided in this section. Instead, continue with
“Installing the DS5020 into a rack on the support rails” on page 42, and then skip
the CRU replacement instructions provided in “Replacing the components” on page
44.
Attention: Remove CRUs from the DS5020 chassis to lessen the weight to make
it easier to transfer the DS5020 storage subsystem from the shipping box to the
rack.
Use the following procedures to remove the CRUs from the DS5020 before
installation. Use these instructions after you have completed all applicable site,
rack, and preparations (as listed in “Preparing for installation” on page 31) and
38
IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide