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Re: [Xen-users] Linux Fiber or iSCSI SAN

On Tue, 11 Jun 2013 12:29:22 -0400, Nick Khamis <symack@xxxxxxxxx> wrote:
On Tue, Jun 11, 2013 at 11:30 AM, Nick Khamis  wrote:

Hello Everyone,

I am speaking for everyone when saying that we are really interested
in knowing what people are
using in deployment. This would be active/active replicated, block
level storage solutions at the:

NAS Level: FreeNAS, OpenFiler (I know it's not linux), IET
FS Level: ZFS, OCFS/2, GFS/2, GlusterFS
Replication Level: DRBD vs GlusterFS
Cluster Level: OpenAIS with Pacemaker etc...

Our hope is for an educated breakdown (i.e., comparisons, benefits,
limitation) of different setups, as opposed to
a war of words on which NAS solution is better than the other.
Comparing black boxes would also be interesting
at a performance level. Talk about pricing, not so much since we
already know that they cost and arm and a leg.

Kind Regards,


There was actually one more level I left out

Hardware Level: PCIe bus (8x 16x V2 etc..), Interface cards (FC and
RJ), SAS (Seagate vs WD)

I hope this thread takes off, and individuals interested in the same
topic can get some really valuable info.

 On a side note, and interesting comment I received was on the risks
that are associated with such a custom build, as
well as the lack of flexibility in some sense.

The risk issue I might entertain to some extent (although
personally I think the risk is LOWER if you built the system
yourself and you have it adequately mirrored and backed up - if
something goes wrong you actually understand how it all hangs
together and can fix it yourself quickly, as opposed to hours
of downtime while an engineer on the other end of the phone
tries to guess what is actually wrong).

But the flexibility argument is completely bogus. If you are
building the solution yourself you have the flexibility to do
whatever you want. When you buy and off the shelf
all-in-one-black-box  appliance you are straitjacketed by
whatever somebody else decided might be useful without any
specific insight into your particular use case.


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