trixter at oldskool.org
Mon Jun 23 12:01:09 CDT 2008
Brad Parker wrote:
> I'd be curious to hear if anyone is using zfs for long term archival and
> how they feel about being glued to solaris to use it. (aside: I used to
> be a serious solaris weenie back in the day, so I'm a fan, but linux
> just became so much more practical at some point)
I have run Solaris at home for a few years now, and I'm also using ZFS.
I also run Linux on a different server for different tasks.
(OpenSolaris has recently (May 2008) become just as "practical" as Linux
(minus about 30% of the driver support Linux has) so you might want to
give the OpenSolaris LiveCD a chance.)
I am *definitely* using ZFS for long-term archival, as you can be as
paranoid as you like about hardware failures: raid-5, raid-6
(double-parity), redundant block copies on the same disk, on different
disks, etc. are all supported. The storage is expandable by replacing
hard drives one at a time (it is not as graceful as Veritas' "evacuate"
function, but they are working on it). Transparent light/realtime
compression or heavier/gzip compression on any filesystem if you want it
(great for email/text archives). Speed is the best I've seen on any
hardware (we use it at work too).
However, it is important to never keep all of your eggs in one basket;
to that end, I routinely archive to DVD. I used to archive to DLT but
the cost and speed became prohibitive once I could get a 16X DVD burner
for $30 and quality DVD-Rs for $0.22 a disc including shipping. I have
two DLT drives and it is still cheaper and faster to burn discs. (Note
that I didn't say easier -- the price for cheaper and faster is my
personal time, of course.)
I don't agree that you need 64-bit for ZFS. I do agree that you need a
minimum of 1G total system RAM for it, preferably 2G, since that helps
offload the cost of the parity/crc checks that keep data consistent and
ensure that you, the user, never actually *see* any IOs except reading.
Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/
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