> Yeah.. but that's assuming it's not being run by an old PowerMac 7200 on a
> 10Mb shared
> ethernet connection... and it's DDS-1, not 3!
I agree, my figures are theoretical maximums, but they'll
give you a starting point. And a slower machine feeding
the tape means longer running time for the tape which means
more wear.
> The AIT/DLT system is expensive, but in theory more reliable, and higher
> capacity, and
> as you can see from above, quite a bit faster (even though the AIT one
> should be ~528GB/day).
Nope. 52GB/day. Don't forget the 10% duty cycle.
> The theoretical speed of the tape is nothing compared to the actual speed of
> the network and
> the drives supplying the data, and if there's someone using the machine, it
> slows down even more!
Agreed. However, something I didn't know about until recently
was this duty cycle limitation. AIT looks _really_ good and
futureproofed until you see that bloody 10%. Come to think
of it, I _hope_ that 10% is a typo, but I can't find it in the errata
on O'Reilly's site.
Hell, DLT originated with DEC... It's gotta be good :-)
Later,
Kenn
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