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

[Gordan Bobic <gordan@xxxxxxxxxx>]

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,
>
> Nick.
>
> 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.

Gordan

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