restore from LTO 3 tape in LTO 4 drive

[disig]

Dear Friends,

I have a decommissioned environment which was running on Version: Sun StorageTek(TM) Enterprise Backup 7.4.5,REV=726 Network Edition/35 and using LTO 3 tapes. Now new environment is in LTO 4 and Version: Sun StorageTek(TM) Enterprise Backup 7.4.5,REV=726 Network Edition/85. Can I restore from a tape in which the backup was taken by a different server (Versions are same). Now I tried to restore a file from the old LTO 3 tape in new LTO4 library. I put the volume and scanned the volume. After mounting the volume it is showing like the following
/dev/rmt/5cbn(J) LTO Ultrium-4 PTL111 mounted LTO Ultrium-4 tape PTL111 (write protected)
But that tape is a LTO 3 tape. And MMINFO is not showing any details. Can I do restoration from this tape…. Please help

Thanks in advance,
Vijo.

[Hema]

Is the tape write-protected? Can you ask your tape ops to check it?

[disig]

Hi Hema,

I use that tape only for restoration. thats why I didn't look in to the write protected message. So far I did,
1. checkin the LTO3 volume to LTO 4 library
2. Deleted the volume
nsrmm -d <volume name>
3. load the volme without mount
nsrjb -j <library name> -l -n -S <slot no> -f <Drive name>
4. scanned the volume
scanner -i <drive name>

After I mount the volume in to drive. But it was showing as LTO 4 volume and mmifo is not showing any data. Am I doing the right steps..??? Please advice how I can go forward.

Thanks,
Vijo