Site Planning Guide
50
2. Rack Installation Specifications
This chapter provides the installation specification of the ETERNUS AB/HB.
Rack Installation Requirements
This section explains the requirements for installing the ETERNUS AB/HB in a 19-inch rack.
Placement in the Rack
Note the following when installing the ETERNUS AB/HB in the rack.
• The center of gravity must be taken into consideration to prevent a rack from toppling over.
Shelves should generally be installed from bottom to top to lower the center of gravity and to
ensure the safe use of racks.
• Shelves are installed in the following order (from bottom to top).
Table 32 Shelf Installation Order
*1: Uninterruptible Power Supply.
Installation order Shelf Size (height)
6 DE212C drive shelf 2U
DE224C drive shelf 2U
5 DE460C drive shelf 4U
4 Controller shelf 2U
3 Controller shelf 4U
2 Power distribution unit 2U
1 UPS (*1) -
• When determining the rack-mounting layout of each shelf and power distribution unit, consider
the length of each cord. For example, if the ETERNUS AB/HB is installed at the top of a 2000
mm rack and a 4 m power cord is used, the surplus length of the power cord at the bottom of a
rack should be about 2 m.
• If the ETERNUS AB/HB is installed at the bottom of a rack, a space for the surplus of cables may
not be available in some racks, preventing the ETERNUS AB/HB from being pulled out when
maintenance work is required. In this case, secure a space of 1U or more at the bottom when
installing the ETERNUS AB/HB.
• If drive shelves are to be added in the future, securing sufficient space for power distribution
units in the bottom of the rack is recommended.
• If devices are installed above and below the ETERNUS AB/HB and there is a difference in depth
of 100 mm or more, leave a space of 1U above the ETERNUS AB/HB so the rear of the unit can
be easily accessed.
To Next Page
Loading...
