On Thursday 22 January 2004 15:38, Bill Boyer wrote: > The "new" TSM runing guide recommends using RAW volumes for performance > reasons.
I think IBM's recommendation is raw for DB and LOG, and JFS for stgpool volumes (because of potential readahead benefits in JFS).
And what about the DirectIO and AsyncIO? If you use DirectIO, don't you bypass the file system cache?
DirectIO is only usable on AIX for LVs under 2G. That's pretty restrictive.
Stef
..Paul
-- Paul Zarnowski Ph: 607-255-4757 719 Rhodes Hall, Cornell University Fx: 607-255-8521 Ithaca, NY 14853-3801 Em: [EMAIL PROTECTED]
