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Sync-up the directories in realtime or near-realtime

We need to sync-up the directories in realtime or near-realtime.
The change at one server's directory should be updated in identical directory of other two servers almost immediately, though not simultaneously. The servers are in the same network.
The OS in all are Redhat.
Is there a way to do this in rsync? If not rsync, is there any other process to achieve this.
We are not going for any third party product.
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ksgans
Asked:
ksgans
1 Solution
 
TintinCommented:
rsync would work fine, but you could also look at using NFS if you want "realtime" updates.
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Gabriel OrozcoSolution ArchitectCommented:
there are several filesystems supporting clustering

for one, there is gfs: http://www.redhat.com/software/rha/gfs/
ocfs is from oracle: http://oss.oracle.com/projects/ocfs/
http://freshmeat.net/projects/pvfs/

intermediate solutions (maybe better)
http://freshmeat.net/projects/caltech-pcp/


for quick and simple ways to do it you need rsync as exposed. here a project that does that:
http://freshmeat.net/projects/pfars/
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ksgansAuthor Commented:
Thanks ......
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