WWN for LTO-Ultrium to set Direct Backup in Data Protector

[John Rivas]

What command in unix do I use to get the World Wide Name for an MSL6060 tape library and the individual tape drives.

I am trying to set up Data Protector to do direct backups through fibre-channel and it requires a World Wide Name and Logical Unit Number. Just for my edification the LUN for the first tape below would be 0/3/1/0.1.0.255.0.0.0?

0/3/1/0.1.0.255.0.0.0 tape HP Ultrium 2-SCSI
0/3/1/0.1.0.255.0.0.1 tape HP Ultrium 2-SCSI
0/3/1/0.1.0.255.0.0.2 ctl HP NS E1200-160
0/3/1/0.1.1.255.0 ext_bus FCP Device Interface
0/3/1/0.1.1.255.0.0 target
0/3/1/0.1.1.255.0.0.0 autoch HP MSL6000 Series
0/3/1/0.1.1.255.0.0.1 tape HP Ultrium 2-SCSI
0/3/1/0.1.1.255.0.0.2 tape HP Ultrium 2-SCSI

[Steven E. Protter]

WWN is found with the fcmsutil command

example:
fcmsutil /dev/td0

I don't recall my Ultrium drives in Chicago ever having their own WWN's. Perhaps the tape libray did and I never knew about it.

Any device directly connected to the SAN should have one.

SEP

[Tim Nelson]

I am thinking that the fcmsutil from the host will give you the WWN of your adapters in the host.

Typically there is a resulting HW id for the external devices on the SAN.

I know in VMS (I mention list as we have a SAN attached library in that world) the WWID is part of the full device listing from the OS.

You may have to get it off of the switch. i.e. logged in node for the port that the library is connected to.

[John Rivas]

It is true, ...the fcmsutil from the host will give you the WWN of your adapters in the host.

and I was looking for a way to access WWN of the tape drives from within Unix.

I'll just have get it off of the switch.

Thanks all.