Rack Installation Specifications; Rack Installation Requirements; Placement In The Rack; Table 17 Enclosure Installation Order - Fujitsu ETERNUS AF250 S2 Site Planning Manual

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
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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).
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Table 17 Enclosure Installation Order

Installation
Enclosure
order
4 Drive enclosure
3 Controller enclosure
2 Power distribution unit
Power Synchronized Unit (*1)
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
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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
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bottom of the rack is recommended.
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays Site Planning Guide
Copyright 2021 FUJITSU LIMITED
Size (height)
2U
2U
1U/2U
1U
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P3AG-1812-06ENZ0