A CacheDrive's hard drive is used for caching and for the device's operating system.  The amount of available cache depends on the size of the hard drive.  The approximate size of the cache will be the size of the hard drive minus the amount reserved for the operating system.


Physical Devices (G80, G40, etc.)


Hard Drive Size (GB)Reserved for OS
< 20016
< 40032
< 80064
< 160096
>= 1600192



Virtual Devices (V202, etc.)


Hard Drive Size (GB)Reserved for OSNotes
< 3216Fixed
32 to 12816 to 48Linearly increasing
128 to 51248 to 96Linearly increasing
512 to 204896 to 192Linearly increasing
> 2048192Fixed