On Fri, 7 Apr 2006 at 6:47am, andy liebman wrote
I'm looking for a way to create a real-time mirror of a NAS. In other words,
say I have a 5.5 TB NAS (3ware 16-drive array, RAID-5, 500 GB drives). I want
to mirror it in real time to a completely separate 5.5 TB NAS. RSYNCing in
the background is not an option. The two NAS boxes need to hold identical
data at all times. It is NOT necessary that the data be accessed from both
NAS boxes simultaneously. One is simply a backup of the other.
I guess one option might be to use Redhat's Global File System (GFS).
Although there seems to be an 8TB limit for a GFS filesystem, which could be
an issue down the road.
I don't have any experience with it, but I've often seen DRBD mentioned
for just this sort of situation. I'd look into that.
--
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University
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