I have an external USB HDD attached to a server that I want to backup to.
When I copy files to it, after a while the copy routine hangs for about a
minute then closes. The copy routine runs from anywhere between a few
minutes to a few hours.

It seems that the connection to the device is lost however the device is
still mounted and I can still browse to it from the workstation after the
copy has failed.

I’ve been using the third party NWCOPY utility to sync files between
the volumes. This gives the error “NWGetNSEntryInfo error
0c8819” in its log file.

I’ve tried using netware copy, straight file copy with no
attributes, several different drives in different cases, different cables,
etc, all to no avail.

Any ideas would be appreciated.