Filter
Top Products
Chapter 3 Connections
3.3 Power Supply Connection
ETERNUS DX60 S2 Disk storage system User’s Guide -Site Planning-
48
Copyright 2012 FUJITSU LIMITED P3AM-5492-04ENZ0
3.3.2 UPS Connection
It is recommended that an Uninterruptible Power Supply System (UPS) be used as the power
supply source for the ETERNUS DX Disk storage system to cope with power outages and
momentary voltage drops in the normal power supply.
Note that when connecting an ETERNUS DX Disk storage system to a UPS with one power sup-
ply line, the total value of the power requirements for all the enclosures must not exceed the UPS
output capacity.
When one of the power supply lines fails for redundantly configured UPS units with two power
supply lines, all of the power for the ETERNUS DX Disk storage system must be supplied from
the other line. Select a UPS that can supply sufficient power so that the total value of the power
requirements does not exceed the UPS output capacity in case only one power supply line is
available.
For details about the necessary UPS output capacity, refer to the specifications of the UPS that
is used.
A UPS must satisfy the following conditions:
● Rating capacity
Secure a sufficient rating capacity for the total value of the maximum power requirements for
the enclosures that are to be installed.
For the maximum power requirements of each enclosure, refer to "2.1 Installation
Specifications" (page 26).
● Supply time
Consider the power supply time of the battery to make sure that the ETERNUS DX Disk
storage system power is not turned off before the server shuts down.
● Socket type
If the power plug type and the socket type of the UPS do not match, it is necessary to equip
the UPS (AC output) with an appropriate type of socket. Request a qualified electrician to
perform the necessary work to make terminal block connections available.
● Power supply configuration
If a UPS is used, make sure that it supplies power to all the enclosures.
Configurations where the controller enclosure is powered by the UPS while the drive
enclosure is powered directly from AC are not supported.