"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 01/16/2006
07:47:28 AM:

> On Jan 16, 2006, at 2:34 AM, Herrmann, Boris wrote:
>
> > ...I think the problem is the raid5 system....
>
> Boris - RAID 5's performance issues during write operations has been
>          discussed many times on this mailing list.  It is the nature
> of that technology, which is performance-expensive.

If it's hardware RAID-5 with RAM cache, it could be write caching is
turned off; either on purpose, by default, or from a bad or expired
battery.  That greatly affects write speeds should be looked at before
blaming the RAID-5 entirely.

Matthew Glanville