10 IBM ESS and IBM DB2 UDB Working Together
partition. If the logical volume is mirrored, then additional physical partitions are allocated to
store the additional copies of each logical partition. These copies usually reside on different
physical volumes (for availability) but, for performance reasons, may reside on the same
physical volume.
1.3.2 Cache File System (CacheFS)
The Cache File System (CacheFS) is a general purpose file system caching mechanism
available in AIX Version 4.3 that improves NFS server performance and scalability by
reducing server and network load. Designed as a layered file system, CacheFS provides the
ability to cache one file system on another. In an NFS environment, CacheFS can increase
the client per server ratio ...