> Sun3's typically came with 60meg drives.  Most modern systems come
> with 150 meg drives.  Don't dispair --- read your manuals.  You
> should be able to convince something to write a 60 meg tape ...

Not.  A 60MB drive uses wider tracks (and therefore fewer of them) than
a 150.  A 150 drive can read a 60 tape by positioning its narrow-gap
head in the middle of the wide track, but there is no way for a 150
drive to write the full width of a 60 track.