Chapter 6 Storage Networking
Configuring Host Access
Scalar i500 User’s Guide 163
Configuring Host Access
Host Access provides a way to limit host access to specific tape drives
and partitions via the library interface.
To use host access, you must have a Storage Networking license on the
library. The Storage Networking license must be sufficient to cover the
tape drive(s) you want to configure for host access.
To configure host access, you must first register the host(s) for host
access, and enable host access on the desired tape drive(s). Then you will
map the host to the tape drives or partitions you want the host to access.
Details about host access include:
• A registered host has full access to all tape drives in the library that
have not been enabled for host access, and full access to all tape
drives that are enabled for host access and have been mapped to that
host. A registered host has no access to drives that have been enabled
for host access but are not mapped to that host.
• An unregistered host has full access to all tape drives in the library
that have not been enabled for host access, but no access to tape
drives that have been enabled for host access.
• Tape drives that are enabled for host access can only be accessed by
registered hosts that are mapped to them.
• Tape drives that are not enabled for host access can be accessed by all
hosts.
• If the control path and any failover tape drives for a partition are
enabled for host access, then only the hosts mapped to that partition
will be able to send media changer commands to that partition.
Unregistered hosts and registered hosts not mapped to that partition
will not be able to send media changer commands to that partition.
However, unregistered hosts and registered hosts that are not
mapped to that partition do still have access and can send commands
to any non-host-access-enabled tape drives in the partition, as well as
any host-access-enabled tape drives in the partition to which they are
mapped.
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