Question : Problem: Drive Invalid  Error on Scalar 24 when upgrading from LTO2 to LTO4 drive.

I have an ADIC (Now Quantum) Scalar 24 Tape Library with an LTO-2 Drive.  I removed the drive and replaced it with 2 LTO-4 drives.  When the library boots up, I reports a Drive 1 Invalid Call Service error for each drive.  

I have all the latest firmware installed.  Does anyone have any ideas?

Answer : Problem: Drive Invalid  Error on Scalar 24 when upgrading from LTO2 to LTO4 drive.

thanks for the info, hope we can assign points and close this issue then?