Re: HA Storage Cookbook?

["Gordon McLellan" <gordonthree@xxxxxxxxx>]

So the short answers are:

1) centos/redhat possess no built-in means of block-level replication
via GFS / RHCS
2) openfiler provides some manor of block-level replication
3) there's "beta" software out there that can do it, but it might not
be a good idea for production (drbd)

Just for reference; my hardware vendor can set me up with a Supermicro
Superserver with 8tb of SAS disk space on hardware raid, 8g of ram and
a 5410 quad core cpu for about $4500.  From Dell, I can buy an empty
SAN box for about $5000, and then pay $500 ea for 1tb sas disks that I
can buy retail for about $200.  The Dell solution provides no
replication either.  The only thing I see Dell providing in this case
is a brand name and an on-site warranty.  Given the most likely item
to fail in a storage server is going to be the storage, I don't see
the on-site warranty being a big bonus, since they still have to ship
you a new drive.

-Gordon
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