So far, we’ve considered only backups and restores of disks on a local computer system. However, many organizations need to take a more unified and comprehensive approach to their total backup needs. We will consider various available solutions for this problem in this section.
The simplest way to move beyond the single-system backup view is to consider remote backup and restores. It is very common to want to perform a backup over the network. The reasons are varied: your system may not have a tape drive at all since not all systems come with one by default any more, there may be a better (faster, higher capacity) tape drive on another system, and so on.
Most versions of
perform network-based operations (Tru64 requires you to use the
rrestore commands). This is accomplished by
specifying a device name of the form host:local_device as an argument to the
-f option. The hostname may also
optionally be preceded by a username and at-sign; for example,
-f chavez@hamlet:/dev/rmt1 performs
the operation on device /dev/rmt1
on host hamlet as user
This capability uses the same network services as the
Remote backup facilities depend on the daemon /usr/sbin/rmt (which is often linked to
/etc/rmt). To be allowed access on the remote system, there needs
to be a .rhosts in its root directory, containing at least the name of the (local) host from which the data will come. ...