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optimesing NFS Server for e.g. remote Backup


I have some RHEL4 servers and want to set up a central backup system
with a "big" harddisk. I found a very nice shell-script, doing
incremental backups using tar.

So I thougt, I'll mount the Backupserver-shares by NFS on the
"client"-servers and run the backupscript by cron so the servers write
there backupdata to the nfs shares.

My problem:
The tests I made where almost fine, but from time to time I do get errors:

/bin/tar: /export/backup02/shares-Wed.tar: Cannot open: Input/output error
/bin/tar: Error is not recoverable: exiting now

Any ideas what coul be wrong? The Backups are about 10 GB +- up to 100
GB in the future.

The second Question: Which NFS/mount/export optimisation settings are
recomendet? (e.g. NFS Version, buffers...)

Thanks a lot for any hints and tips!


Götz Reinicke
Götz Reinicke
IT Koordinator - IT OfficeNet

Tel. +49 (0) 7141 - 969 420
Fax  +49 (0) 7141 - 969 55 420
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