Silicon Graphics workstation
 

I have three TDK DAR-120 4mm cartiridges (Tapes used to store data)...these were being used to store data way back in 1996-97. The model of the Silicon Graphics Machine being used predated the octane.
1. Does anybody know if these can be used with the tape reader in the Octane model?

2. What models were available during that time using a Unix/Windows NT environment?

Thank you any help will be greatly appreciated.