Red Hat Linux 8 has long since been retired and is not supported, please read the sticky entitled:
Reminder: Are you running an unsupported version of linux?
RHL8 was released before USB support was part of the kernel, as a suggestion use a supported version of Linux which has USB support. If staying with the Red Hat family try using CentOS 3 as the replacement.
The fact that some supplier insists on using this out dated and dead OS means that you need a new supplier. To answer your question in general, yes one can use the tools provided in RHL8 to backup the data to a remote drive. Since you have provided zero information about the RHL8 system your best bet is to use samba to connect to the remote system. Also use rsync to schedule and backup the data.