Software RAID comes with a preformance hit that with todays processors you probably will never notice.
RAID1 would be ok, if you are after rock solid redundancy then purchase another drive as a hot spare (and if your really keen, try to ensure that the drives are nto from teh same production batch)
comments like "dont know if it is really effective" are kinda wishy washy, effective against what ? was he saying that a single drive system would have greater redundancy than a mirrored setup ? what sort of effect was he commenting on ?
the preformance hit you will see will also depend on how many users and how busy you expect the server to be - also, buying 5400rpm drives will probably not help much, try and get reasonably fast drives with a reasonable ammount of cache ram.
if you are after reliability only then there is no point to stripe (infact, some people claim that software stripes actually slow things down over say - RAID 10)
-- Steve.
On Thu, 19 Aug 2004, kenwardc wrote:
Hi All
Someone said to me today they didn't know whether RAID on Linux was very effective. Can someone tell me whether it's still worth RAIDing drives on Linux? I'm building a new mail server and I wanted to put in RAID 1 just in case of problems with drives etc. down the line. Any advice appreciated.
Also, provided the answer to the question is YES, is RAID 1 the best for a mail server or should I be looking at striping? I'm obviously not looking for the greatest speed but want absolutely reliable redundancy.
Regards Chris
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