Two specific structures are used to contain the redo and undo logs in the Assure MIMIX for AIX architecture. The After Image Log File Container (AILFC) and Before Image Log File Container (BILFC) are used to hold these logs. The entire set of logs is known as a journal to Assure MIMIX for AIX, and on the recovery server, associated redo logs together with undo logs form the journal. The journal is often illustrated as a single pool, and these logs are block storage devices that do not interact with resident file systems or their cache buffers.