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Re: [Veritas-bu] Which is Best for My NetBackup Master - 32
2009-07-17 10:53:48
On Fri, Jul 17, 2009 at 9:04 AM, Eagle, Kent <KEagle AT wilmingtontrust DOT com> wrote:
Avoid putting a page file on a fault-tolerant drive, such as a mirrored
volume or a RAID-5 volume. Page files do not need fault-tolerance, and
some fault-tolerant systems suffer from slow data writes because they
write data to multiple locations.
This is crazy! If you have a hardware failure on a disk that hosts the pagefile, you *will* crash. You obviously want a decent raid controller, but there's no way I'd avoid a hardware-mirrored volume just for performance.
If your access to the page file is that high that you are saturating a mirrored disk, then you've got major memory constraint issues to deal with. Fault tolerance is the least of your problems.
Disks do exactly 3 things:
1. They read
2. They write
3. They fail
.../Ed
Ed Wilts, RHCE, BCFP, BCSD, SCSP, SCSE
ewilts AT ewilts DOT org
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