Problems with DLT7000 and SDLT

Hi,

I think this issue should be posted in a backup box, but there wasn't .

We have an issue that we made a backup on a DLT7000 tape using tar. Ones we check using : tar tvf /dev/rmt/0
It all works great on the same server.

Now ejecting the tape and putting it into server 2 with an SDLT unit we try to do the same but get an error. However mt stat -f /dev/rmt/0 shows :

Quantum Super DLT 320 tape drive:
sense key(0x6)= Unit Attention residual= 0 retries= 0
file no= 0 block no= 0

The DLT7000 would be read only compatible to the SDLT, right?

I know it's (by default) not the other way arround and you can't append, but is there something else we should look at ?

Best Regs David