◦
The library must have two or more LTO-5 or later generation Fibre Channel drives of
the same type (e.g. LTO-generation and form factor).
◦
If the library is partitioned into multiple logical libraries, each logical library must contain
at least two LTO-5 or later generation Fibre Channel drives.
◦
A host connection via a SAN switch with NPIV is enabled for associated ports.
◦
All drive ports are configured as Fabric.
NOTE:
When library control path failover is first enabled, the hardware address for the
library will change.
Windows example: Bus Number 0, Target ID 0, LUN 1 becomes Bus Number 0, Target Id
2, LUN 0
Linux example:
/dev/sg3 HP MSL G3 Series 7.41
becomes
/dev/sg5 HP MSL G3
Series 7.41
If the library detects a situation when it is necessary to remove the primary master drive or
force a failover, power off the drive from the RMI Configuration > Drive 1 (LUN) screen. This
will disable the drive and pass the library control path to the alternate drive. If the disabled
drive is replaced with a new drive, the library LUN stays with the alternate drive until manually
reassigned back with the RMI Configuration > System > Library LUN hosted by Drive.
•
Alternative Drive for Library Control Path — If the library is configured for library control path
failover, select the drive number of the alternative drive.
Changing the drive configuration
This page shows the current configuration of all drives and allows modification to the configuration.
You can also select
Power on
through this page. (See
Configuration > Drive page (parallel SCSI)
,
Configuration > Drive page (Fibre Channel)
, or
Configuration > Drive page (SAS)
).
Figure 45 Configuration > Drive page (Fibre Channel)
For a Fibre Channel tape drive, you can use this screen to configure the FC ports. The port fields
are:
•
Speed — Automatic, 1 Gb/s, 2 Gb/s, 4 Gb/s, or 8 Gb/s. Only speeds supported by the drive
are listed. The default is Automatic.
•
Port Type — Automatic, Fabric (N), or Loop (NL). Direct connected devices are typically
Loop. Devices connected to a switch are typically Fabric. The default is Automatic.
72
Operating the tape library
