Selim Daoud wrote:
it would be good to have real data and not only guess ot anecdots
this story about wrong blocks being written by RAID controllers
sounds like the anti-terrorism propaganda we are leaving in: exagerate
the facts to catch everyone's attention
.It's going to take more than that to prove RAID ctrls have been doing
a bad jobs for the last 30 years
Let's make up real stories with hard fact first
I have actual hard data and bitter experience (from support calls)
to backup the allegations that raid controllers can and do write
bad blocks.
No, I cannot and will not provide specifics - I signed an NDA
which expressly deals with confidentiality of customer information.
What I can say is that if we'd had ZFS to manage the filesystems
in question, not only would we have detected the problem much
earlier, but the flow-on effect to the end-users would have been
much more easily managed.
James C. McPherson
--
Solaris kernel software engineer, system admin and troubleshooter
http://www.jmcp.homeunix.com/blog
Find me on LinkedIn @ http://www.linkedin.com/in/jamescmcpherson
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