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From: hubler@galaxy.lerc.nasa.gov
Newsgroups: comp.unix.aix
Subject: Re: using rdump with 1/4 inch tape media
Message-ID: <1991Jan8.130705.4927@eagle.lerc.nasa.gov>
Date: 8 Jan 91 13:07:05 GMT
References: <50.2786E262@ananke.stgt.sub.org>
Reply-To: hubler@galaxy.lerc.nasa.gov (Dale Hubler)
Organization: NASA Lewis Research Center, Cleveland, Ohio
Lines: 21

> DH> I can easily backup the 75 Meg onto one DC600 cartridge (in QIC 120
> DH> format).  The same 75 Meg requires 4 cartridges when I use rdump to
> DH> backup across the network.
>
> the tape operates in 
>stop-and-go mode, significantly reducing its capacity. In the manual of the 
>tape, there is a picture saying the capacity is reduced from 150 MB to 30 MB 
>when operated in non-streaming mode. I personally have trouble believing this 
>relation, especially at large block sizes, but its given in IBM's docs...
>
     Thanks for the reply, I guess I'll just have to carry the tape drive
from station to station if I don't want to drastically increase my tape
costs.  I wonder if I could convince IBM to put the SCSI port on the
front of our boxes?


--
***********************************************************************
Dale A. Hubler  --  Sverdrup Technology  --  (216) 977-7014     
                                             hubler@galaxy.lerc.nasa.gov
****            Whip me, Beat me, Call me Edna                  *******