Meridian Data 16i Appendix C Uninterruptible Power Supply, Connect the PSU Module Power Cords

Appendix C

Uninterruptible Power Supply

C.1 Uninterruptible Power Supply Overview

An uninterruptible power supply (UPS) is a separately purchased battery backup unit that is connected to an EMD Storage subsystem. If the UPS is sufficiently large, it should allow the whole subsystem to safely finish the ongoing I/Os in the event of an AC power failure.

C.2 Compatible UPS Supplies

The APC SMART-UPS 700VA is compatible with the SecurStor subsystem.

C.3 Serial Communication Cable

The subsystem is shipped with a customized audio-jack to DB9 serial communication cable. The cable is used to connect the controller module on a subsystem to a PC hyperterminal for subsystem management. If you wish to use a UPS with your subsystem, an additional audio- jack to DB9 serial communication cable (see Figure C-24) must be purchased.

Figure C-24: Audio-Jack to DB9 Serial Communication Cable

CAUTION!

The pinouts on the COM2 audio-jack to DB9 serial cable used to connect to the UPS are different from the pinouts on the serial cable that was shipped with the subsystem. When connecting the UPS device, please make sure you use the correct cable type. The cable pinouts are listed in Appendix B.

C.4 Connecting the UPS to the Subsystem

C.4.1 Connect the PSU Module Power Cords

The two (2) power cables shipped with the subsystem must be plugged into the power cord sockets in the rear of the PSU modules. The plug at the other end of the

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