Yes there is a difference, DLT is six characters and SDLT is seven characters.
You may or may not be able to use your existing labels.  We did with one 
exception,
cleaning labels.  Neither NBU or the tape library recognized the six 
character cleaning
tape label as a cleaning tape.  Vendors where no help, even their own 
manual stated
seven character cleaning tape labels required and their support said it 
didn't matter.
If you need labels try http://www.issibusiness.com



>----- Original Message -----
>From: "Douglas Ritschel" <dritschel62 AT yahoo DOT com>
>To: "veritas-ng" <veritas-bu AT mailman.eng.auburn DOT edu>
>Sent: Thursday, April 17, 2003 11:58 PM
>Subject: [Veritas-bu] SDLT220 Labels vs DLT IV Labels
>
>
> > Is there any difference between SDLT220 Labels and DLT
> > IV Labels? Or can I use my old DLT IV Labels on my new
> > SDLT220 tapes?
> >
> >
> > _______________________________________________
> > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>