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- Path: sparky!uunet!psinntp!sugar!tghost!dadstoy!zatar
- From: zatar@dadstoy.gbdata.com (Terry Stockdale)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: What's the real difference between QIC-40 and QIC-80?
- Message-ID: <C8tTrAoHBh107h@dadstoy.gbdata.com>
- Date: Sat, 9 Jan 93 09:19:46 -0600
- References: <1993Jan6.091131.12040@engr.uark.edu> <1993Jan5.134512.710@grebyn.com> <1993Jan7.025054.721@mlb.semi.harris.com>
- Organization: Lots of little files on drive D:
- Lines: 41
-
- In <1993Jan7.025054.721@mlb.semi.harris.com> sonny@charybdis.harris-atd.com (Bob Davis) writes:
- >>richk@grebyn.com (Richard Krehbiel) writes:
- >>
- >>>What feature is it that makes the DC2120 tape store 120M on a Jumbo
- >>>250 and only 60M on a Jumbo 120? Does QIC-80 have twice as many
- >
- > Isn't the only difference between the Jumbo 250 and the
- >Jumbo 120 that the 250 employs on-the-fly data compression algorithms
- >(sorta like Stacker) to squeeze roughly twice as much data (on the average)
- >onto the tape as the 120?
- >
- > Aren't the on-tape capacities and recording hardware the same?
- >Just that software (firmware?) has squeezed the redundancy from the
- >data presented to the 250?
- >
-
- I'm sure they both do. I have a Jumbo 120 drive. It gets 60megs on a
- DC2120 tape without compression and "up to 120megs" with the compression
- included in the jumbo software. The software for the 120 and 250 are
- the same. However, I get effective compression on my game drive of
- about 1.1:1, rather than 2:1, and about 1.4:1 on my other drive. I've
- never seen anything like a 2:1 average compression out of my drive.
-
- > Are OS/2 drivers yet available for the Jumbos?
-
- Nope, and yes. Colorado will sell you Sytos (sp?) software for $99 to
- support OS/2 2.0. You can find more info on comp.os.os2.misc, where
- it's discussed rather often. I do not run OS/2 2.0, YET, until I upgrade
- to a larger hard drive (last weekend, I upgraded a 386sx-16 motherboard
- to a 486DX-33). The lack of Colorado support for OS/2 was also prominent
- in my reluctance to convert. I've become a win3.1 user, for lack of tape
- support.
- --
-
- --
- __
- "Even if you're on the right track,
- you'll get run over if you don't move." --Will Rogers.
-
- terry@dadstoy.gbdata.com Terry Stockdale Houston, Texas
-