I'm with ya on that one. I'd even go so far as to change "single parity
RAID" to "single parity block". The talk of RAID throws people off
pretty easily especially when you start layering ZFS on top of things
other then a JBOD.
Eric Schrock wrote:
I don't see why you would distinguish between single-level and multiple
levels. ZFS pools are always dynamically striped, I don't see why you'd
call out the degenerate case of single toplevel vdev as anything
special. I would use simple terminology:
Unreplicated
Mirrored
Single Parity RAID
Double Parity RAID
If people need to correlate this with traditional terminology (RAID-0,
etc), then it could be placed in parentheses. But it makes more sense
to take dynamic striping as a fact of life, and not differentiate a
single mirror from two mirrors, etc.
- Eric
On Wed, Aug 09, 2006 at 02:16:40PM -0700, Richard Elling - PAE wrote:
I'd like to get a concensus of how to describe ZFS RAID configs in a
short-hand method. For example,
single-level
no RAID (1 disk)
RAID-0 (dynamic stripe, > 1 disk)
RAID-1
RAID-Z
RAID-Z2
mutliple levels
RAID-1+0
RAID-Z+0
RAID-Z2+0
Is it better to say RAID-0, striping, or dynamic striping?
Is it better to say RAID-1 or mirroring?
-- richard
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