Hi,
David Magda wrote:
On Jul 19, 2009, at 20:13, Gavin Maltby wrote:
No, ECC memory is a must too. ZFS checksumming verifies and corrects
data read back from a disk, but once it is read from disk it is stashed
in memory for your application to use - without ECC you erode
confidence that
what you read from memory is correct.
Right, because once (say) Apple incorporates ZFS into Mac OS X they'll
also start shipping MacBooks and iMacs with ECC.
If customers were committing valuable business data to MacBooks and iMacs
then ECC would be a requirement. I don't know of terribly many
customers running their business of of a laptop.
If it's so necessary we
might as well have any kernel that has ZFS in it only allow 'zpool
create' to be run if the kernel detects ECC modules.
Come on.
>
It's a nice-to-have, but at some point we're getting into the tinfoil
hat-equivalent of data protection.
On a laptop zfs is a huge amount safer than other filesystems, still has
all the great usability features etc - but zfs does not magically turn
your laptop into a server-grade system. What you refer to as a tinfoil hat
is an essential component of any server if that is housing business-vital
data; obviously it is just a nice-to-have on a laptop, but recognise
what you're losing.
Gavin
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