DESC: The 64MB BBWC Enabler is a transportable 64MB battery module increasing the total memory of the controller to 128MB for RAID, read cache, and BBWC. The transportability of the battery memory module protects the write cache data from unexpected power loss, system board failure, or controller board failure. Data retained in the write cache will be protected for up to 72 hours, allowing time to restore power, or transport the module to a functioning system board or array controller.