What is a RAID battery cache? Before delving into the specifications of a Raid Battery Cache, we must understand its concept and origin. A RAID (Redundant Array of independent disks) batter cache is simply a controller that performs a fail-saving mechanism for your server system. Predominantly, the whole system of a RAID Battery cache serves as a continued and flawless performance even if one of the disks suddenly fails. The smooth running of the server will not be compromised if you have this RAID Cache Battery. However, this battery provides a backup for maintaining the operations running on the server, and the data will be safe.