opensource wide area san?

[Stephen]

This si kind of what we have...

"Is the environment use windows DFS or anything?  FRS was crap, but DFS-R
(R2) might provide adherence to bandwidth limits on site-based
replication.  I'm looking at giving iscsi targets to windows off a local
san (OF), and giving DFS-R a try to manage replications and such, just
not sure how it stretches yet.  Not positive, but worth a look if DFS is
front-ending a windows server/client environment for your needs,
supposedly it has wan-friendly qualities for such occasion.  Doesn't
solve all issues, but may in some cases."

and it performs really well except when i do large data xfers from
machine 1 and machine 2 with main data volumes as iSCSI on the same OF
server.

but that one is kind of expected.

we are really having to go back to DFS/FRS i was just trying to
explore options but for only2-3 more months of this its at this point
just better to fix DFS again.

however i still like OF as a filer.

On Wed, Jul 29, 2009 at 8:27 PM, Michael Butash<michael at butash.net> wrote:
> Consider also Qos on the routers at very least, segregate your traffic
> via CBWFQ (Cisco) or whatever vendor solution supports queuing.  You
> don't want disk sync's to swat other important traffic.
>
> Is the environment use windows DFS or anything?  FRS was crap, but DFS-R
> (R2) might provide adherence to bandwidth limits on site-based
> replication.  I'm looking at giving iscsi targets to windows off a local
> san (OF), and giving DFS-R a try to manage replications and such, just
> not sure how it stretches yet.  Not positive, but worth a look if DFS is
> front-ending a windows server/client environment for your needs,
> supposedly it has wan-friendly qualities for such occasion.  Doesn't
> solve all issues, but may in some cases.
>
> -mb
>
>
> On Wed, 2009-07-29 at 14:06 -0700, Stephen wrote:
>> We are useing an openfiler server here and it has been running great.
>>
>> right now it is hosting several iSCSI connections to our servers
>> however we need to replicate data on one of the iSCSI volumes between
>> 2 sites.
>>
>> internally using DRBD/heartbeat comes to mind as a new but no brainer
>> solution. however these servers need to live in 2 different states
>> (and eventually maybe 3-4 locations)
>>
>> generally it would seem that rsync would be better however it is a
>> file level replication and seems that it would not be able to
>> replicate the iSCSI volume which is block level...
>>
>> can DRBD/heartbeat sync across a t-1 or pair of bonded t-1's? or will
>> it eat the pipe?
>>
>
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-- 
A mouse trap, placed on top of your alarm clock, will prevent you from
rolling over and going back to sleep after you hit the snooze button.

Stephen