About 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. For information on licensing, see Applying a License Key.
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 map the host to the tape drives or partitions you want the host to access.
Host Access uses the following configuration options. For information about an option, click the link.
Details about using and configuring 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 medium changer commands to that partition. Unregistered hosts and registered hosts not mapped to that partition will not be able to send medium 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.
- A maximum of 64 host entries can be mapped for access control to each tape drive, regardless of whether the hosts are mapped to the tape drive, to the partition for which the drive provides the library control path, or both. If the same host is mapped to both the tape drive and the partition, the same host consumes two host entries
See also: