Date: Tue, 25 Sep 2007 21:49:22 -0400 From: "Brian A. Seklecki" <lavalamp@spiritual-machines.org> To: Rakhesh Sasidharan <rakhesh@rakhesh.com> Cc: freebsd-questions@freebsd.org Subject: Re: GEOM, Vinum difference Message-ID: <1190771362.2983.8.camel@localhost.localdomain> In-Reply-To: <20070822084628.L88943@obelix.home.rakhesh.com> References: <20070820121349.D51751@obelix.home.rakhesh.com> <44abslgfa0.fsf@be-well.ilk.org> <20070822084628.L88943@obelix.home.rakhesh.com>
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On Wed, 2007-08-22 at 08:51 +0400, Rakhesh Sasidharan wrote: > Lowell Gilbert wrote: > > > Rakhesh Sasidharan <rakhesh@rakhesh.com> writes: > > > >> I see that if I want to do disk striping/ concating/ mirroring, > >> FreeBSD offers the GEOM utilities and the Vinum LVM (which fits into > >> the GEOM architecture). Why do we have two different ways of doing the ... > definitely a difference. Thanks! > > Another (related) question: both gvinum and the geom utilities like > gmirror and gstripe etc provide for RAID0, RAID1, and RAID3. Any > advantages/ disadvantages of using one instead of the other? It depends greatly upon your application and needs. A common practice in a common 6-disk capable server is to use a RAID1 set of smaller capacity, faster speed/RPM disks for RAID1 for the "system" file systems, while using a combination of larger, slower disks in a RAID1 set, then RAID0'd together for both space, performance, and redundancy. RAID1+0. ~BAS
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