Patent ID: 8769196

Claim:
A method for use in configuring I/O cache, the method comprising: identifying a file system and a disk volume; mounting the file system on the disk volume; determining that at least a portion of the disk volume will be unavailable for I/O for at least a first time; creating a cache mapper logical volume in response to the determining that at least the portion of the disk volume will be unavailable for I/O for at least the first time; creating a cache volume from an existing cache storage unit, wherein the cache mapper logical volume is mounted on the disk volume and the cache volume, and wherein the cache volume is created on a solid state drive; and relocating data from the disk volume to the cache volume; wherein I/O operations are directed between the file system and the disk volume in response to cache volume creation not being completed; and wherein I/O operations are directed from the file system to the cache volume in response to cache volume creation being completed.