Title: Preparing a NetApp filer to attach a NDMP tape library over FC under netvault
NV Version: any
OS Version: any
Plugin version: NDMP all versions
This article talks about things to look for on your filer before installing the Fibre Channel attached tape library using the NetVault software.
The first thing to check is that the correct amount of drives and changers are seen by the filer as they are attached to the system.
This can be done with the following storage command:
This will display all drives and changers with there WWID. If there are more drives and changers than expected the most likely cause is that the filer has a dual path to the switch that the library is attached to. It is not advisable to have dual path configured to a fiber library so remove one of the fiber connections to the switch and use the following storage command to remove all the devices:
storage unalias -a
Then reboot the filer to get the devices automatically configured.
If rebooting is not possible you will need to add the aliases manually. Attached to this solution you will find an Ontap manual that outlines the available commands. Rember that drive 1 (the lowest drive number) should be ST0 and the numbers should increment from there, i.e.D rive 2 = ST1 . To check the drive name and alias are correct, use the library beb interface or front panel to verify the WWID of the drive and assign as required.
The other reason for devices appearing more than once is that the devices might have been plugged into various ports during installation and the auto-configuration of the filer has picked them up on more than one HBA port over time. Again the “storage unalias –a “ command and rebooting or configuring manually can be used, and again the drive order and drive names need to be confirmed.
When the drives are then finally added in NetVault, they should match the drive numbers correctly, i.e. ST0 being the first drive installed and shown as Drive 1 in NetVault etc.