Greg Freemyer [off-list ref] wrote:

On Sat, Sep 19, 2009 at 11:10 AM, Mario 'BitKoenig' Holbe

quoted

And *if* spontaneously flipping bits *would* happen on single disks,
they would also happen on your RAID5. No RAID level except RAID2 (which

If you want reliable data you have to build in end-to-end
verification.

Indeed.

etc.  In theory the whole distribution process is reliable, but by
verifying it at the very end you gain a significant amount of
confidence.

And cheaper, usually.

With regards to data storage, one major step in this direction is the
"integrity" patch that went into the kernel last winter (2.6.28?).

That's far from being end-to-end. Actually, it is even against the
end-to-end argument. End-to-end means from application to application.

This is all pretty new obviously.  To the best of my knowledge

The End-to-End Arguments in System Design (Saltzer, Reed, and Clark,
1981) is far from being new.


regards
   Mario
-- 
reich sein heisst nicht, einen Ferrari zu kaufen, sondern einen zu
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                                               Dietmar Wischmeier