GEOM, Vinum difference
Brian A. Seklecki
lavalamp at spiritual-machines.org
Thu Sep 27 15:31:27 PDT 2007
On Wed, 2007-08-22 at 08:51 +0400, Rakhesh Sasidharan wrote:
> Lowell Gilbert wrote:
>
> > Rakhesh Sasidharan <rakhesh at 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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