On Tue, Jan 14, 2003 at 01:33:03PM -0500, Eric Sproul wrote:
> Hi,
> I've been trying to run tapetype to get a reading on a new Compaq
> SDLT320 drive with 110/220 tapes.  There are no tapetype definitions
> that I could find for this combination.  I knew it would take a while
> (the last person to post an SDLT tapetype said it took him 2.5 days),
> but it took tapetype 3.5 days to write 112GB in the "short write" pass. 
> Now it has started over with another pass and I fear I'm looking at
> another 3.5 days of waiting.  Why is this?

Because something is wrong or you have a very old version of tapetype.

Your drive specs will include a speed rating, in MB/sec probably.
Divide that into your tape's rated capacity to get an approximation
of how long it will take to write a complete tape.  Tapetype should
take about twice as long as it makes 2 passes.

Be sure in your calculation that you use matching speed and capacity
numbers.  Matching in the sense of both refering to HW compression on
or both refering to HW compression off.

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
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