You have already received the answer, but allow me to expound on the issue a
bit further. You state that you have a DDS-3 drive and that you have been
feeding it 120-meter tapes. I am sure by now you realize that you have been
using the DDS-3 drive as a DDS-2, same speed and recording capacity
(1MB/second for 4GB). In order to obtain the real throughput of the DDS-3
device and the recording capacity (2MB/second for 12GB), you must use DDS-3
125-meter tapes.
Now for the 150 meter tapes. Indeed, you cannot use them in the DDS-3
drive. The length really has nothing to do with it; rather the 150 meter
tape is thinner than the 125/120/90/60 meter tapes and is subject to
stretching and breakage in a non-DDS-4 device. DDS-4: 5.6 microns, DDS-3:
6.8 microns. And as John said, the DDS-3 drive should not even load the
tape.
Kind regards,
Denys. . .
Denys Beauchemin
HICOMP
(800) 323-8863 (281) 288-7438 Fax: (281) 288-7438
denys at hicomp.com www.hicomp.com
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]]On Behalf Of
Connie Samuel
Sent: Wednesday, September 11, 2002 7:00 PM
To: [log in to unmask]
Subject: Re: Tapes for DDS 3 tape drives
>NO. The longest tapes you can use are DDS-3 125m.
Thanks for the info--we'll be returning those 150's. At least we can
still use the 120-meter tapes!
Connie Samuel
Clatsop Community College / Astoria, Oregon
503/338-2320
[log in to unmask] / www.clatsopcc.edu
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