I have installed ADSMV2 for OS/2 SMP on IBM Netfinity 5500/7000 , with a DLT
Drive Qantum 4000 that supported DLT Tape IV.Sometime i have two tipology of
problems about ADSM / DLT Tape.
 The first is "simple" I/0 Error Tape , with code error ADSM Anr8353e.Other
error that is present  frequentily is mountwait timeout (ANR8351e) , also if the
tape is corretly mounted.
Do you have any exsperience about ?
It's necessary to change the tape everytime?
Thanks, Antonio.