[geeks] Cheap Dell Servers
Sandwich Maker
adh at an.bradford.ma.us
Thu Feb 7 16:27:10 CST 2008
" From: der Mouse <mouse at Rodents.Montreal.QC.CA>
"
" >> One thing I'm still trying to work out is how to set the disklabel
" >> drive parameters for a RAID. What is the RPM of a RAID?
" > for a simple stripe it should be easy. rpm is rpm of individual
" > disks;
"
" What if they're different? Say, one component on a 5400rpm spindle and
" one on a 7200rpm spindle?
i think this could be classified as a pathological case - you can
never set raid params to get max performance from all disks in this
situation anyway.
" > but if your software and your drives support tagged command queueing
" > it's probably all moot.
"
" Yeah, worrying about RPM makes about as much sense as worrying about
" c/h/s geometry does - "none", unless you're using fairly old disks.
there might be, if all disks are [as usual] identical, and you could
specify c/h/s for more than one zone in the disklabel... but with zbr
and the ability to enter only a single c/h/s, you're going to get it
wrong for most of the disk anyway.
________________________________________________________________________
Andrew Hay the genius nature
internet rambler is to see what all have seen
adh at an.bradford.ma.us and think what none thought
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