All of our server use raid 5 controllers and I have
noticed severe fragmentation. Is it recommended to still
use a disk defrag program even with a raid 5 controller?

Also is it recommended to defrag a NAS server?

Yes (RAID5).
Yes (NAS), if the NAS supports it (check w/your OEM).

Depending on the usage patterns fragmentation can impact perf 5-->15%.

Since RAID5/NAS implies a large image size, I would recommend scheduling the
defrag to run during light usage (users can still be on the box, but perf
will be down during the job).


Pat

"mypopper" <(E-Mail Removed)> wrote in message
news:08a601c3c323$a4f3f930$(E-Mail Removed)...
> All of our server use raid 5 controllers and I have
> noticed severe fragmentation. Is it recommended to still
> use a disk defrag program even with a raid 5 controller?
>
> Also is it recommended to defrag a NAS server?