John,
>
> It is a well known and published fact (on the Imail list) that RAID5
> should
> never ever be used for the spool directory or any other directory that
has
> a
> high write activity. This is basic physics. RAID5 should really only
be
> used
> for high read activity only, such as databases where most of the
writing
> is
> done to transaction (log) files and at spaced intervals those
transactions
> are committed to the database.
>
> RAID1 or even RAID0+1 is best for the spool and logs.
I guess this is going against what I think should be happening. In a
RAID 5 array the write to the drives is broken into many smaller writes
along with the data protection/CRC info and then those writes are
written to different drives. It seems to me that it should be faster to
do a bunch of small writes rather than 1 big write.
What am I missing?
Goran Jovanovic
The LAN Shoppe
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