rsync error

[leo wong]

does anyone use rsync as a backup server?
i got the following error msg.
please help


building file list ...
link_stat /mnt/nw/DATA2/POP/APPS : Input/Output error
done
delta transmission enabled
total: matches=3D0 tag_hits=3D0 false_alarms=3D0 data=3D0
wrote 17 bytes read 20 bytes 2.74 bytes/sec
total size is 0   speedup is 0.00
rsync error: partial transfer (code 23) at main.c(578)

leo