Learn about the specifications for the feature code (FC) 5662 Dual IOA Enablement Card.

The Dual IOA Enablement Card (FC 5662) is used to enable write cache on the two embedded SAS RAID controllers of the Disk/Media Backplane (FC 5652) by providing the necessary rechargeable batteries for memory backup. It also enables the two embedded SAS RAID controllers to work as dual storage IOAs. The Dual IOA Enablement Card (FC 5662) plugs into the Disk/Media Backplane (FC 5652) and enables a 175 MB write cache on each of the two embedded RAID controllers by providing two rechargeable batteries with associated charger circuitry. The write cache can provide additional I/O performance for attached disk or solid state drives, particularly for RAID 5 and RAID 6. The write cache contents are mirrored for redundancy between the two RAID adapters resulting in an effective write cache size of 175 MB. The batteries provide power to maintain both copies of write-cache information in the event power is lost.

Figure 1. CCIN 57CF PCI Express x8 Planar 3 Gb SAS RAID Adapter with 175MB Cache RAID – Dual IOA Enablement Card