Hitachi HUS Cache Backup Battery (DF-F850-BACBS)

A storage controller holds recent writes in cache before they reach disk. The Hitachi 3285118-A is the cache backup battery that keeps that cache protected during a power loss on HUS 110 and HUS 130 arrays. The option number for this battery is DF-F850-BACBS. Either number can appear on the part or in array documentation, so check both when you match a replacement. Batteries wear with age. If your array reports a battery fault or warns that cache protection is degraded, replacing the battery restores that protection. Many sites also swap batteries on a schedule rather than waiting for an alert. This part is available New, Refurbished or Used. New and Refurbished batteries carry 1 year or 3 years of warranty, and Used batteries carry 90 days. Let us know how many controllers you need to cover and we will reply with pricing.