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DDS3 Capacities

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Neil Harvey

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Aug 18, 1997, 3:00:00 AM8/18/97
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Greetings

I have had a few days to try out a DDS3 DAT drive on a 969/200.

In all cases, 4.2 GB were stored.

120 Meter DAT DDS2
Device = 7, Compression=enable, Eject=Nochange, Load=Nochange
STORE @.@.@;*t;DIRECTORY;STATISTICS;PROGRESS.
MEDIA 1 1:03 PM 1:54 PM 1348 K/S 0
TOTAL ELAPSED TIME: 0 hours, 50 minutes, 59 seconds

125 Meter DAT DDS3
Device = 7, Compression=disable, Eject=Nochange, Load=Nochange
STORE @.@.@;*t;DIRECTORY;STATISTICS;PROGRESS.
MEDIA 1 4:47 PM 5:59 PM 955 K/S 0
TOTAL ELAPSED TIME: 1 hours, 11 minutes, 59 seconds

125 Meter DAT DDS3
Device = 7, Compression=enable, Eject=Nochange, Load=Nochange
STORE @.@.@;*t;DIRECTORY;STATISTICS;PROGRESS
MEDIA 1 3:58 PM 4:36 PM 1823 K/S 0
TOTAL ELAPSED TIME: 0 hours, 37 minutes, 42 seconds

125 Meter DAT DDS3
Device = 7, Compression=disable, Eject=Nochange, Load=Nochange
STORE @.@.@;*t;DIRECTORY;STATISTICS;PROGRESS;COMPRESS=HIGH.
MEDIA 1 7:31 PM 8:03 PM 756 K/S 0
TOTAL ELAPSED TIME: 0 hours, 31 minutes, 18 seconds

125 Meter DAT DDS3
Device = 7, Compression=enable, Eject=Nochange, Load=Nochange
STORE @.@.@;*t;DIRECTORY;STATISTICS;PROGRESS;COMPRESS=HIGH.
MEDIA 1 9:23 PM 9:55 PM 732 K/S 0
TOTAL ELAPSED TIME: 0 hours, 32 minutes, 21 seconds

Regards

Neil

Overman_James

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Aug 18, 1997, 3:00:00 AM8/18/97
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Neil Harvey (ne...@NHA.CO.ZA) wrote:
: I have had a few days to try out a DDS3 DAT drive on a 969/200.

: In all cases, 4.2 GB were stored.
As expected, software compression with no hardware compression worked best.
Try adding MAXTAPEBUF to the STORE and things should also be a bit faster.
If you have time try INTER also, this may help if disc i/o's are a bottlenec.k
--
James Overman HP SSG R&D Lab Roseville, CA

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