Date: Sat, 4 Sep 1999 09:08:24 +0930 From: Greg Lehey <grog@lemis.com> To: Gerd Knops <gerti@bitart.com> Cc: questions@FreeBSD.ORG Subject: Re: Vinum: Best performance from mirror setup with two disks Message-ID: <19990904090824.Y95378@freebie.lemis.com> In-Reply-To: <19990903232137.9612.qmail@camelot.bitart.com>; from Gerd Knops on Fri, Sep 03, 1999 at 06:21:36PM -0500 References: <19990903232137.9612.qmail@camelot.bitart.com>
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On Friday, 3 September 1999 at 18:21:36 -0500, Gerd Knops wrote: > Hi, > > I have read everything I could find about vinum (man pages, recent questions > Mailing list, Vinum intro) but I am still not quite sure: > > What is the best performing setup to get mirroring with two disks? > > I understand that I just set up one plex per disk. Write performance goes > down due to double writes, read performance goes up since vinum will > alternate reads between the plexis. Correct. > What I don't quite understand is if striping gives me an added advantage in > this scenario. It depends a lot on your usage. In general, a striped plex will give more even access to the two drives, so the performance is likely to be better. Greg -- When replying to this message, please copy the original recipients. For more information, see http://www.lemis.com/questions.html See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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