HP Surestore Disk Array 12h - And FC60 Service Manual page 243

2. Take disk arrays
offline
Of the items that are removed, some are removed to be replace by new components. Some may need to
be removed, such as the disk array enclosures to allow the enclosure rails to be repositioned (since
back-to-back racking in the 2-meter rack utilizes all EIA units, including the bottom unit). For
additional clarification, refer to the detailed installation steps following this step.
a) Unmount all file systems associated with the devices in the rack.
b) Bring devices in the rack
c) Power down the devices in the rack.
d) Unplug the rack's PDU cables from the power source.
e) Remove the rack's rear door and side panels.
f) Remove the rear door, hinges, and latch catch. (These will not be used again)
g) Remove the PDUs (56 inch) and brackets from the rack. (These will be replaced with new PDUs) .
h) If necessary, remove disk array enclosures (see step 4 below). The disk array enclosures are heavy.
Prior to removing the enclosure, the individual disk modules should be removed. Also, when re-
installing the disk modules, they should be installed back into the same enclosure from which they
were removed (but not necessarily the same slot). Thus, when removing the disk modules, identify
on the module from which array enclosure it was removed.
i) Remove the top cap from the rack.
j) Remove any fans (these will be replace by high-volume exhaust fans).
3. Install the exhaust fan assembly
Install this assembly as described in the Exhaust Fan Assembly Installation Guide (E7687-90001)
4 Install rail kits and/or reposition rails as needed
Install new rail kits as needed to hold the number of disk enclosures to be racked. Ensure that the rails are
installed as indicated in Table 21
in Appendix C of this document.) Refer to
representation of the placement of the arrays/components. Also, install the clip nuts for the array enclosure
flange as indicated in Table
Remember, if the rack has side access, you can install disk enclosures in the high-density configuration; if
side access is not an option, one enclosure space must remain vacant, see
, power down rack and remove existing components
.
offline
for either the 1.6-meter or the 2-meter rack. (Rail installation is described
Figure 50 Rack Array/Component Positioning for a visual
21.
Appendix D. Back-to-Back Racking
Installation Procedure
Figure 49.
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