glee@cont1.Dayton.NCR.COM (Gary Lee) (10/07/88)
** I previously posted this, but received no response ** I am looking for information on previously announced, but as yet unreleased Digital Audio Tape backup devices for PC's. I remember reading somewhere that HP and Sony were working on one together for a Q3 or Q4 1988 release. Ideally the drive will be certified for Novell Netware SFT 2.11 so it can back up all the special files and include software for automating the backup process. Any information on DAT technology in PC's will be greatly appreciated. ** So I am assuming it does not exist yet, therefor can anyone point me in the direction of other technology, products, or vendors which might offer similar capacity ( 1.2 gigabytes ) at a reasonable price ( Emerald and Maynard need not apply ). **
mark@intek01.UUCP (Mark McWiggins) (10/09/88)
glee@cont1.Dayton.NCR.COM (Gary Lee) writes: > I am looking for information on previously announced, but as yet unreleased > Digital Audio Tape backup devices for PC's. ... Ideally > the drive will be certified for Novell Netware SFT 2.11 so it can back up all > the special files and include software for automating the backup process. Any > information on DAT technology in PC's will be greatly appreciated. > The October '88 Unix World contains two ads for these, 1 from Feith Systems and Software One Bala Plaza, East Lobby Bala Cynwyd PA 19004 215-667-5575 (voice) 215-667-4057 (fax) attmail!dfeith (I think ... they didn't get the '!' right) Another is from Perfect Byte 7121 Cass Street Omaha NE 68132-2652 402-554-1122 (voice) 402-554-1938 (fax) uunet!pbi!keith Neither mentions Netware support, but then this is a Unix mag; I'd be surprised if someone isn't supporting it in the first wave. For the record: I have no interest in either of these organizations, except as a potential user who's tired of $20 DC-600A's that only hold 60 MB! -- Mark McWiggins UUCP: uunet!intek01!mark DISCLAIMER: I could be wrong. INTERNET: intek01!mark@uunet.uu.net (206) 455-9935
hildum@bnrmtv.UUCP (Douglass Hildum) (10/11/88)
The 1986 ICASSP conference publications had some descriptions of Digital Audio Tape technology. Eric Hildum
steve@ivucsb.UUCP (Steve Lemke <steve>) (10/15/88)
In article <413@cont1.Dayton.NCR.COM> glee@cont1.Dayton.NCR.COM (Gary Lee) writes:
< I am looking for information on previously announced, but as yet unreleased
<Digital Audio Tape backup devices for PC's. I remember reading somewhere that
<HP and Sony were working on one together for a Q3 or Q4 1988 release. Ideally
<the drive will be certified for Novell Netware SFT 2.11 so it can back up all
<the special files and include software for automating the backup process. Any
<information on DAT technology in PC's will be greatly appreciated.
<
<** So I am assuming it does not exist yet, therefor can anyone point me in the
<direction of other technology, products, or vendors which might offer similar
<capacity ( 1.2 gigabytes ) at a reasonable price ( Emerald and Maynard need
<not apply ). **
Well, I don't know of any specific manufacturers, but aren't 8mm Videotape
based backup units coming of age? I know of one for the Macintosh, and I'm
sure that they exist for the PC (although I thought it _was_ Emerald). Because
of the rotary head technology they're quite fast. Also, maybe the Emerald unit
I was thinking of was a rotary head unit that used the DC-600 cartridges to
get somewhere around 1.2 gigs on a tape.
----- Steve Lemke ------------------- "MS-DOS (OS/2, etc.) - just say no!"
----- Internet: steve@ivucsb.UUCP; lemke@apple.COM AppleLink: LEMKE
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----- Quote: "What'd I go to college for?" "You had fun, didn't you?"ron@hardees.rutgers.edu (Ron Natalie) (10/16/88)
All current day video tape technology uses helical scan. It's the only way you can record video without having to have the tape zinging by at incredible rates. The 8mm backup systems out are cheap and hold a lot of data, but they still aren't anywhere near as fast as a decent 9 track reel tape drive. The EXABYTE drive has a maximum throughput of 250KBytes a second. The relatively inexpensive 9 track on my system at home can write to the tape faster than than the poor winchester in the system can give up the data. The major advantage of the EXABYTE style drives is the, start up the backups when you go home for the night and come back the next day type of operation. -Ron
dorn@fabscal.UUCP (Alan Dorn Hetzel) (10/17/88)
For the ultimate in high performance backup, check out a little box from
Honeywell Instrument Systems which uses VHS tape to backup on... specs:
Capacity: 5.6 Gigabytes per tape (approximate)
Throughput: 2 or 4 Megabytes per second (1 or 2 channel model)
(This creams your average 9-track)
Cost: If you have to ask....
Dorn
gatech.edu!fabscal!dorn
p.s. I'm not affiliated with these folks.chris@mimsy.UUCP (Chris Torek) (10/17/88)
In article <547@fabscal.UUCP> dorn@fabscal.UUCP (Alan Dorn Hetzel) writes: >For the ultimate in high performance backup, check out a little box from >Honeywell Instrument Systems which uses VHS tape to backup on... specs: > >Capacity: 5.6 Gigabytes per tape (approximate) >Throughput: 2 or 4 Megabytes per second (1 or 2 channel model) > (This creams your average 9-track) >Cost: If you have to ask.... Most VHS backup tape systems apparently do not incorporate motor control. What this means is that if you cannot read the tape at least as fast as you wrote it, you will miss some data and not be able to recover it (unless it appears again later in the tape). The program cannot stop the tape and back it up to re-read the missed data. If this is true, I would not use it. I have been told that all the 8mm video tape backup systems use the Sony transport. The one we are experimenting with now certainly does have motor control. Alas, it is (like all the others) limited to 248 kB/s. -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163) Domain: chris@mimsy.umd.edu Path: uunet!mimsy!chris
msf@prandtl.nas.nasa.gov (Michael S. Fischbein) (10/17/88)
In article <547@fabscal.UUCP> dorn@fabscal.UUCP (Alan Dorn Hetzel, Jr.) writes: >For the ultimate in high performance backup, check out a little box from >Honeywell Instrument Systems which uses VHS tape to backup on... specs: >Capacity: 5.6 Gigabytes per tape (approximate) >Throughput: 2 or 4 Megabytes per second (1 or 2 channel model) >Cost: If you have to ask.... This tape recorder was designed to replace reel-to-reel instrumentation recorders; it has some serious drawbacks for computer use (unless Honewell has fixed them, they said they would, but I haven't heard anything). What drawbacks? Well, that 2 or 4 MB/sec is obviously streaming mode. What's not obvious is that there is no start/stop mode. That means the MINIMUM speed is also around 2 MB/sec (I can check my files if anyone cares for the exact number; or check Honeywell for the up-to-date numbers. If it has changed, drop me an email note, OK?). Further, you could only put one file per cassette, so if your network or disk or I/O backplane couldn't sustain 2MB/sec, you were out of luck. mike Michael Fischbein msf@prandtl.nas.nasa.gov ...!seismo!decuac!csmunix!icase!msf These are my opinions and not necessarily official views of any organization.
dorn@fabscal.UUCP (Alan Dorn Hetzel) (10/18/88)
In article <14029@mimsy.UUCP> chris@mimsy.UUCP (Chris Torek) writes: >In article <547@fabscal.UUCP> dorn@fabscal.UUCP (Alan Dorn Hetzel) writes: >>For the ultimate in high performance backup, check out a little box from >>Honeywell Instrument Systems which uses VHS tape to backup on... specs: >> >>Capacity: 5.6 Gigabytes per tape (approximate) >>Throughput: 2 or 4 Megabytes per second (1 or 2 channel model) >> (This creams your average 9-track) >>Cost: If you have to ask.... > >Most VHS backup tape systems apparently do not incorporate motor control. This drive is full start/stop, writes 64Kbytes of data plus error correction per equivalent video field, 60 fields per second, random access to any block on tape in 90 seconds. It kicks but, but you pay DEARLY. Dorn :