Michael Shadle wrote:
On Mon, Apr 27, 2009 at 5:32 PM, Scott Lawson
<scott.law...@manukau.ac.nz> wrote:
One thing you haven't mentioned is the drive type and size that you are
planning to use as this
greatly influences what people here would recommend. RAIDZ2 is built for
big, slow SATA
disks as reconstruction times in large RAIDZ's and RAIDZ2's increase the
risk of vdev failure
significantly due to the time taken to resilver to a replacement drive. Hot
spares are your friend!
Well these are Seagate 1.5TB SATA disks. So.. big slow disks ;)
Then RAIDZ2 is your friend! The resilver time on a large RAIDZ2 stripe on
these would take a significant amount of time. The probability of
another drive failing
during this rebuild time is quite high. I have in my time seen numerous
double disk failures
in hardware backed RAID5's resulting in complete volume failure.
You did also state that this is a system to be used for backups? So
availability is five 9's?
Are you planning on using Open Solaris or mainstream Solaris 10? Mainstream
Solaris
10 is more conservative and is capable of being placed under a support
agreement if need
be.
Nope. Home storage (DVDs, music, etc) - I'd be fine with mainstream
Solaris, the only reason I went with SXCE was for the in-kernel CIFS,
which I wound up not using anyway due to some weird bug.
I have a v240 at home with a 12 bay D1000 chassis with 11 x 300GB SCSI's
in a RAIDZ2 at
home with 1 hot spare. Makes a great NAS for me. Mostly for photo's and
music so
the capacity is fine. Speed is very very quick as these are 10 K drives.
I have a a printing
business on the side where we store customer images on this and have
gigabit to all
the macs that we use for photoshop. The assurance that RAIDZ2 gives me
allows me to
sleep comfortably. (coupled with daily snapshots ;))
I use S10 10/08 with Samba for my network clients. Runs like a charm.
--
_______________________________________________________________________
Scott Lawson
Systems Architect
Manukau Institute of Technology
Information Communication Technology Services Private Bag 94006 Manukau
City Auckland New Zealand
Phone : +64 09 968 7611
Fax : +64 09 968 7641
Mobile : +64 27 568 7611
mailto:sc...@manukau.ac.nz
http://www.manukau.ac.nz
________________________________________________________________________
perl -e 'print
$i=pack(c5,(41*2),sqrt(7056),(unpack(c,H)-2),oct(115),10);'
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