On Sunday 28 January 2007 11:28, you wrote:

> I had some limited experience with DDS4 drives/tapes about 10 years
> back, and one thing I found to be absolutely true: DDS4 tapes
> labelled/written-to on one DDS4 drive will NOT work in another DDS4
> drive.

I could believe that.  Is there any decent way to "format" the tape other 
than "mt erase", which fails identically to writes with "dd"?

> My suggestion, if you haven't done so already,  is to take a fresh DDS4 tape 
> that has never been in any drive and try that in your new DDS4 drive. If 
> you've done this, and it still won't perform at DDS4, then I'd try and find
> out what those DIP switches do, chances are good one of them will toggle 
> between DDS3/DDS4 compression.  

I've double-checked all the documented switches and they look OK.  Guess my 
next step is to try and find Seagate's tech support.
-- 
Kirk Strauser

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