2. Rack Installation Specifications
This chapter provides the rack installation specification of the ETERNUS AF.
Rack Installation Requirements
This section explains the requirements for installing the ETERNUS AF in a 19-inch rack.
Placement in the Rack
Note the following when installing the ETERNUS AF in the rack.
•
The center of gravity must be taken into consideration to prevent a rack from toppling over. Enclosures should
generally be installed from bottom to top to lower the center of gravity and to ensure the safe use of racks.
•
Enclosures are installed in the following order (from bottom to top).
Table 17 Enclosure Installation Order
Installation
order
Enclosure Size (height)
4 Drive enclosure 2U
3 Controller enclosure 2U
2 Power distribution unit
Power Synchronized Unit (*1)
1U/2U
1U
1 UPS (*2) —
*1: This is an optional product for only the ETERNUS AF.
*2: This is an Uninterruptible Power Supply.
•
When determining the rack-mounting layout of each enclosure and power distribution unit, consider the
length of each cable. For example, if the
ETERNUS AF is installed at the top of a 2000mm rack and a 4m
power cord is used, the surplus length of the power cord at the bottom of a rack should be about 2m.
•
If the storage system is installed at the bottom of a rack, a space for the surplus of cables may not be avail-
able in some racks, preventing the storage system from being pulled out when maintenance work is re-
quired.
In this case, secure a space of 1U or more at the bottom when installing the storage system.
•
If drive enclosures are to be added in the future, securing sufficient space for power distribution units in the
bottom of the rack is recommended.
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FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays
Site Planning Guide
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P3AG-1812-06ENZ0
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