Date: Tue, 15 Dec 2009 11:00:18 -0500 From: Thomas Burgess <wonslung@gmail.com> To: Solon Lutz <solon@pyro.de> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS RaidZ2 with 24 drives? Message-ID: <deb820500912150800h5d26bd22t4eff5810a9999ab6@mail.gmail.com> In-Reply-To: <568624531.20091215163420@pyro.de> References: <568624531.20091215163420@pyro.de>
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you should avoid it. if you want more information about why this is a BAD idea, read this post: http://forums.freebsd.org/showpost.php?p=22025&postcount=17 you should keep in mind each raidz group is seen by zfs more or less as a single hard drive...you should stick to groups NO BIGGER than 9 drives personally, i use 4-5 drives for raidz1 and 6-8 drives for raidz2 also, keep in mind, while you do loose a LITTLE space, you gain a ton more MTTF it's very much worth it. I'd go with 3 groups of 8 or 4 groups of 6 24 in one group = 33 TB 3 groups of 8 = 27 TB 4 groups of 6 = 24 TB personally, i'd go with the 3 groups of 8 On Tue, Dec 15, 2009 at 10:34 AM, Solon Lutz <solon@pyro.de> wrote: > Hi, > > are there any cons against building a RaidZ2 with 24 1.5TB drives? > In some old postings floating around the net a limit of 9 drives > is recommended. > Does this still apply to the current ZFS in 8.0? > > > Best regards, > > Solon Lutz > > > +-----------------------------------------------+ > | Pyro.Labs Berlin - Creativity for tomorrow | > | Wasgenstrasse 75/13 - 14129 Berlin, Germany | > | www.pyro.de - phone + 49 - 30 - 48 48 58 58 | > | info@pyro.de - fax + 49 - 30 - 80 94 03 52 | > +-----------------------------------------------+ > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >
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