HP StoreEver MSL6480 Tape Library User and Service Guide

All drive port types, A and B for full height drives, must be configured as Fabric. Any
drive that is not set to Fabric will be configured as Fabric by the Expert Partition Wizard.
If CPF is disabled, the ports remain in Fabric mode until they are manually reconfigured.
• Enable — Advanced Control Path Failover (ACPF) — When selected, the host operating
systems and library work together to handle error recover and path failover for the partition
at a level below the backup application. ACPF has both port-to-port failover on a single
control path drive and drive-to-drive failover of the library LUN.
This option is only selectable when the following requirements are met:
◦ The partition contains at least two LTO-6 FC tape drives. SAS and earlier generation
tape drives can be in the same partition, but cannot be configured for ACPF.
◦ The Control Path Failover license has been added to the library.
NOTE: Advanced Path Failover requires a driver to be installed on all backup application
servers that will access the partition. For information about Advanced Path Failover,
including installing and using APF software, see the HP StoreEver Libraries Advanced
Path Failover User Guide.
10. In the Select Control Path Settings screen, select the Active Control Path Drive. If CPF or ACPF
are enabled, also select the Passive Control Path Drive. Click Next.
11. In the Select Data Path Failover Settings screen, check the Data Path Failover settings for each
tape drive.
• None — When selected, the drive will not attempt to transfer the data path to the other
port if it detects a failure on the primary port.
• Basic DPF — The drive-assisted failover features of the dual-port LTO-5 and LTO-6 drives
are enabled. In this case, if the drive detects a failure on the primary data path, it transfers
the fabric identity and all settings to the standby link and then activates the link.
This option is only selectable when the following requirements are met:
◦ The drive is an LTO-5 or later generation dual-ported FC drive.
◦ ACPF is NOT enabled for the partition containing the drive.
◦ The Data Path Failover license has been added to the library.
• Advanced DPF — The Advanced Data Path Failover features of LTO-6 drives are enabled.
With ADPF, the operating system and library work together to detect a failed drive port
and transfer the data path to the other drive port as quickly as possible, resulting in most
recoveries completing before the standard command timeout.
This option is only selectable when the following requirements are met:
◦ The drive is an LTO-6 dual-ported FC drive.
◦ Basic CPF is NOT enabled for the partition containing the drive.
◦ The Data Path Failover license has been added to the library.
12. Verify the partition configuration and then click Finish.
After the wizard reconfigures the partition, the library will come on line automatically.
To remove a partition:
1. Select the partition, click Remove, and then click Next.
2. Verify that you want to remove the partition and then click Finish.
After the wizard removes the partition, the library will come on line automatically.
58 Operating the library