ZFS would be an interesting setup as you can do the cache pools like you
would do in CacheCade. The problem with ZFS or CacheCade+DRBD is that they
really don't scale out well if you are looking for something with a unified
name space. I'll say however that ZFS is a battle hardened FS with tons of
shops using it. A lot of the whiz-bang SSD+SATA disk SAN things these
smaller start up companies are hocking are just ZFS appliances.
RBD looks interesting but I'm not sure if I would be willing to put
production data on it, I'm not sure how performant it is IRL. From a
purely technical perspective, it looks REALLY cool.
I suppose anything is fast if you put SSDs in it :) GlusterFS is another
option although historically small/random IO has not been it's strong point.
If you are ok spending money on software and want a scale out block storage
then you might want to consider HP LeftHand's VSA product. I am personally
partial to NFS plays:) I went the exact opposite approach and settled on
Isilon for our primary storage for our CS deployment.
On Mon, Oct 22, 2012 at 10:24 AM, Nik Martin <
[email protected]>wrote:
On 10/22/2012 10:16 AM, Trevor Francis wrote:
We are looking at building a Primary Storage solution for an
enterprise/carrier class application. However, we want to build it using
a FOSS solution and not a commercial solution. Do you have a
recommendation on platform?
Trevor,
I got EXCELLENT results builing a SAN from FOSS using:
OS: Centos
Hardware: 2X storage servers, with 12x2TB 3.5 SATA drives. LSI MegaRAID
with CacheCade Pro, with 240 GB Intel 520 SSDs configured to do SSD caching
(alternately, look at FlashCache from Facebook)
intel 10GB dual port nics, one port for crossover, on port for up link to
storage network
DRBD for real time block replication to active-active
Pacemaker+corosync for HA Resource management
tgtd for iSCSI target
If you want file backed storage, XFS is a very good filesystem on Linux
now.
Pacemaker+Corosync can be difficult to grok at the beginning, but that
setup gave me a VERY high performance SAN. The downside is it is entirely
managed by CLI, no UI whatsoever.
Trevor Francis
Partner
46 Labs | The PeerEdge Cloud
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<http://www.peeredge.net/>
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trevorgfrancis - Skype
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Regards,
Nik
Nik Martin
VP Business Development
Nfina Technologies, Inc.
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