A little bug here in last version...
when we use the assistant to create a new disk cache at the second page (with all details) "Enable Defer-Write" is grayed, we could not check it by default
we have to select "write only" on the "Cache strategy" and back to read/write to un gray the check box
the check box should be un grayed by default under read/write
it's not a big issue, but have to be corrected

thanks