Software RAID issues (was Re: Suggestions solicited, server bring up)

[Alan Johnson]

On Mon, Nov 23, 2009 at 11:18 AM, Bill McGonigle <bill at bfccomputing.com>wrote:

> I know of a computer company over in Lebanon that's selling 16 and
> 24-bay Nexenta-based ZFS storage servers that'll do iscsi, nfs, smb with
> impressive ease. ;)  OpenSolaris kernel, Ubuntu userland, block-level
> dedup coming early next year


I don't want to go commercial, so I won't guess the name, but are the
initials BFCC, but chance? ;-)


>
> NFS can do better than iSCSI with certain workloads (no block-sized
> overheads) but it really gets interesting when pNFS shows up
> (parallelism fixes the NFS throughput problem).  Q1'10, probably.
>

A fellow on this list at the Birthday party said that iSCSI had a lot less
network overhead and much better real throughput than NFS.  Is there a way
to bring NFS closer to even?  Parallelization does not quite address the
issue of overhead.  Is there something else in pNFS that does?   My goal is
to get our database storage into our private cloud storage (under
development), but we get >1.5GBps now on some of our FusionIO stores, so
even with 10Gbps NICs, we would be taking a step down before accouting for
overhead.


> Unless Oracle changes the license (Sun dismissed it but Oracle is
> already GPL'ing), ZFS probably gets superseded by btrfs, but not for a
> few years.
>

What?! No. Oracle GPL'ing?  Really?  Got any articles handy were I can read
up on the details. That's very exciting.
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