Connecting the 2145 UPS-1U to the SAN Volume Controller

To provide redundancy and concurrent maintenance, you must install the SAN Volume Controller nodes in pairs.

For connection to the 2145 UPS-1U, each SAN Volume Controller of a pair must be connected to only one 2145 UPS-1U.

Note: A cluster can contain no more than eight SAN Volume Controller nodes. The 2145 UPS-1U must be attached to a source that is both single phase and 200-240 V. The 2145 UPS-1U has an integrated circuit breaker and does not need external protection.

SAN Volume Controller provides a cable bundle for connecting uninterruptible power supply to a node. For 2145-8F2, 2145-8F4, 2145-8G4, and 2145-8A4, this is a single power cable plus a serial cable. For 2145-CF8, this is a dual-power cable plus serial cable. This cable is used to connect both power supplies of a node to the same uninterruptible power supply.

The SAN Volume Controller software determines whether the input voltage to the uninterruptible power supply is within range and sets an appropriate voltage alarm range on the uninterruptible power supply. The software continues to recheck the input voltage every few minutes. If it changes substantially but remains within the permitted range, the alarm limits are readjusted.

Note: The 2145 UPS-1U is equipped with a cable retention bracket that keeps the power cable from disengaging from the rear panel. See the related documentation for more information.