Date: Wed, 29 Nov 2006 15:37:22 -0700 From: Scott Long <scottl@samsco.org> To: Arone Silimantia <aronesimi@yahoo.com> Cc: freebsd-fs@freebsd.org Subject: Re: one big array, or a boot array and a (less big) array ? Message-ID: <456E0BA2.90104@samsco.org> In-Reply-To: <340522.11027.qm@web58614.mail.re3.yahoo.com> References: <340522.11027.qm@web58614.mail.re3.yahoo.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Arone Silimantia wrote: > I have a system with 8 drive bays. I have 8 250 GB > disks. > > I would like to just create one giant raid5 array in > my adaptec hardware raid controller of size 1.75 TB, > and just make my partitions (/, /data, /var) on that > big 2 TB array. > > But I feel like I have heard suggestions on this list > before that one should have a separate array just for > the boot and userland, and that the big monster array > should be separate from that. > > So instead, should I take two of the 8 disks and make > them a mirror, and put boot/userland on there, and > then make a raid5 out of the remaining 6 ? > > Or does it not matter at all ? > > If one is better, why ? Thanks. > If reliability is your highest priority, then you should create (as you describe above) a 2 disk RAID-1, a 5 disk RAID-5, and assign the 8th disk as a global hot-spare. Putting 8 SATA disks into a single enclosure has implications for cooling all of those drives, which in turn has implications for drive life. If I were doing it, this is exactly what I'd do. Scott
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?456E0BA2.90104>