[Beowulf] RE: Storage - the end of RAID?
atp at piskorski.com
Fri Oct 29 12:45:55 PDT 2010
On Fri, Oct 29, 2010 at 02:46:35PM -0400, Ellis H. Wilson III wrote:
> The major issue I see with the article is that the author refers to RAID
> being "dead" when really he should be saying RAID 2-6 is less preferable
> to RAID 1 (but it does make for a "catchier" article title).
What I think original article author, Robin Harris, probably knew, but
didn't point out explicitly, is that all the official "RAID"
algorithms are ** block oriented **, RAID-1 just as much as RAID-5,
and *that's* why they're "dead". The only question how long it'll
take for better solutions to become widespread enough for us to ditch
block-oriented RAID entirely. Everything else Harris mentions is just
ZFS and Btrfs seem to have the right approach; end-to-end data
assurance provided by the file system. I look forward to the time
when I can easily use it for real on all my computers.
Andrew Piskorski <atp at piskorski.com>
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