DS400 redundant controller upgrade

Model: 13N1777

The second controller upgrade provides redundancy for a single controller version of the IBM TotalStorage DS400 (1700-1RS). It can help maintain access to the disks in the event of a controller failure. This controller upgrade features 256MB of battery-backed data cache and dual 2GB Fiber Channel ports for host connectivity. Active/Active implementation with the primary controller provides added performance.

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