HP StoreEver MSL6480 Tape Library User and Service Guide Addendum (QU625-96016, October 2013)

1. Navigate to the Configuration > System > License Key Handling screen.
2. In the Add License Key pane, enter the License Key and then click Add License.
You can also use Command View for Tape Libraries 3.7 or newer versions to manage licenses.
Configuring and verifying control path failover
The library only supports control path failover when used in a Fibre Channel SAN and connected
as fabric devices. Control path failover is enabled independently for each partition in the library.
The minimum configuration is:
• A partition with two or more LTO-5 or later generation dual-ported FC drives of the same type.
For example, the partition can contain two LTO-5 full-height drives or two LTO-6 half-height
drives, but not one of each.
• A host connection via a SAN switch with NPIV enabled for associated ports.
• The Control Path Failover license has been added to the library.
1. Launch the Expert Partition Wizard from the Configuration→Partitions→Expert Wizard.
2. Select the partition that you want to configure and then click Edit.
3. Click Next until the Select Control Path Failover Type screen is displayed.
4. Check Enable — Basic Control Path Failover (CPF) and then click Next.
5. In the Select Control Path Settings screen, select the active and passive control path drives,
and then click Next.
6. If you are also enabling data path failover, continue with the instructions in “Enabling data
path port failover” (page 21)
If you are only enabling control path failover, click Next until the Finish Configuration screen
is displayed. Verify the configuration settings and then click Finish.
7. Repeat the procedure to configure basic control path failover for additional library partitions.
Configuration requirements after enabling control path failure
When control path failover is enabled, the library is no longer presented as a logical unit behind
the tape drive and is assigned a new Fibre Channel node name. After configuring the control path
failover parameters, you might need to make additional changes:
• Switches using world wide name zoning will have to be configured to allow access to the
library controller. If the switch interface does not allow manually entering a world wide name,
the zone for the primary control path can be configured and then a failover may be forced
to cause the secondary path to be enabled and the second zone configured. (To force a
failover, see “Verifying control path failover” (page 20)). The library world wide name can
be found in the Status > Library Status screen, as shown in Figure 11 (page 20).
Configuring and verifying control path failover 19