Configuring Host Access To Storage Networking Drives And Partitions - Quantum Scalar i6000 User Manual

Quantum Scalar i6000 User's Guide

Configuring Host Access to Storage Networking Drives and Partitions

• Viewing All Access Groups
Without host access restrictions, all hosts can view all drives connected
to the SAN and all partitions to which there is a library control path.
Host access gives you the ability to deny/restrict access to specific hosts.
Details about host access include:
• If a control path drive has an SNW license applied to it, it will not be
seen by external applications until you create an access group and
add the host and partition to the access group.
• Access is granted using "access groups." An access group is made
up of partitions, drives, and hosts. Drives and partitions can be in
multiple access groups, but each host can only be in one access
group.
• A partition can be assigned to a host access group if its control path
is through an SNW-licensed tape drive.
• Drives must be licensed for SNW before they can be added to access
groups. Once a drive has been licensed for SNW, it is inaccessible to
hosts until they are granted access via the host access feature. See
Licensing Drives for Storage Networking
• Tape drives that are licensed for SNW can only be accessed by hosts
that are in the same host access group as the drives.
• Tape drives that are not licensed for SNW can be accessed by any
hosts that are zoned to the drives WWPN.
• If the control path and any control path failover tape drives for a
partition are licensed for SNW, then only the hosts in the same
access group as that partition will be able to send medium changer
commands to that partition. Hosts not in the same access group as
a partition will not be able to send medium changer commands to
that partition. However, hosts that are not in the same access group
as a partition do still have access and can send commands to any
non-SNW-enabled tape drives in that partition.
• Host access to a partition means the host can issue media changer
commands to the partition.
• Host access to a drive means the host can issue SCSI commands to
the drive.
Chapter 10: Storage Networking
on page 396
on page 351.
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