> > Is there any software, commercial/non-commercial, for linux mirroring?
> > I have 2 NFS servers. Only one is used by clients. I want first server
> > (which is used by clients) to automatically mirror the data to another
> > NFS server at the same time. So whenever some transaction will be
> > updated on first nfs server that will also be updated on second nfs
> > server automatically. The second nfs server is for failover purposes.
>
> http://www.linuxraid.org
RAID is typically used to mirror two or more drives on the same host.
You can perform RAID over a network with ENBD:
http://www.it.uc3m.es/~ptb/nbd/ (?)
You probably also want to look at GFS:
http://www.sistina.com/gfs/
and Intermezzo (described as the sucessor to coda):
http://inter-mezzo.org/
thornton
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