Rich Freeman on 9 May 2014 13:08:05 -0700

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Re: [PLUG] iSCSI storage appliance(s)

On Fri, May 9, 2014 at 4:01 PM, Lee H. Marzke <> wrote:
> ZFS is designed to handle peta or 'zeta' bytes of storage and it's name implies
> and ZFS is software RAID only.

I doubt anything would prevent ZFS (or btrfs, which shares these
characteristics) from working with hardware RAID.  However, it would
defeat some of the purpose of using it in the first place.  A hardware
RAID just abstracts the physical storage and presents a big drive, and
COW filesystems can work on a big drive.  Since you separate the
physical layer the filesystem can't do things like avoid overwriting
only part of a stripe (which forces a read before write operation).

But your points are fine otherwise - COW is a great thing!

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