Ups Connection - Fujitsu ETERNUS DX100 S4 Design Manual

4. Connection Configuration
Power Supply Connection

UPS Connection

It is recommended that an Uninterruptible Power Supply System (UPS) is used as the power supply
source for the ETERNUS DX to cope with power outages and momentary voltage drops in the nor-
mal power supply.
Note that when connecting an ETERNUS DX to a single UPS, the total value of the power require-
ments 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 sup-
ply lines, all of the power for the ETERNUS DX 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.
To find the maximum power level requirements for each enclosure, refer to "Installation Specifica-
tions" in "Site Planning Guide".
●
Supply Time
The total time for the server to shut down and for the ETERNUS DX to power off must be taken
into consideration for the power supply time of the battery.
●
Switching Time during Power Failure
The normal power supply must be switched to UPS output within 15ms after a power failure occurs.
●
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 enclosures
are powered directly from AC are not supported.
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems Design Guide (Basic)
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