[comp.sys.mac] Tape backup systems

pkahn@meridian.ads.com (Phil Kahn) (05/24/88)

We have several MACIIs and a gaggle of lesser :-) machines.  Problem
that everyone has is backing up our hard disks.  I have a 40M HD at
home. A full backup to floppies would take over 40 disks! A real drag
(especially the first time through when you're initializing the
disks.) Now imagine trying to do this on the 300M Jasmine HD at work!
Long story short: we need a tape backup unit.

Can anyone suggest good backup units and/or reviews of them?  The 40MB
cartidges seem popular, but 40MB is not that much; I'd prefer at least
twice that much. Also, how about write speed, backup support (e.g.,
can I do single file backups/recoveries, can I backup just a single
folder, etc). How about the 9-track tape units?  Big pluses here.
Very large capacity, compatibability with larger systems (e.g., DEC,
UNIX systems, etc.). Cost is also a factor.


Thanks,
phil...

Ilan@cup.portal.com (05/25/88)

Phil,
I`d like to refer you to the June 1988 issue of MacUser magazine.
The article `Back It Up` provides a good review of the existing
tape backup units -- go for it.

As far as my company, ILANET, we have been using the CMS TS-60.
The 60 MB tapes are quite sufficient for backing up our 160 MB of
disks, and the 50 minutes of backup time is phenomenal.  I like the
digital cassette tapes used on the unit due to their compactness and
so far reliability (esspecially their speed). The unit cost us 750.00
but recently I`ve seen it advertised close to 700.00. The tapes cost
17-30 dollars and there are also 50MB tapes which can be used with them.

The backup program bundled with the drive is FAST and does the job fine.
However, I wish it were Multifinder compatible and have a better user
interface.  All in all between 0-10 I'd rate it 8 --> I like the unit.

Good luck..                 - Ilan Rabinowitz -  with ILANET(tm)
                            Ilan@cup.portal.com
                            (408) 248-0521

solution@ditsyda.oz ( George Bray) (06/04/88)

>
> Can anyone suggest good backup units and/or reviews of them?  The 40MB
> cartidges seem popular, but 40MB is not that much; I'd prefer at least
> twice that much. Also, how about write speed, backup support (e.g.,
> can I do single file backups/recoveries, can I backup just a single
> folder, etc). How about the 9-track tape units?  Big pluses here.
> Very large capacity, compatibability with larger systems (e.g., DEC,
> UNIX systems, etc.). Cost is also a factor.

The CMS 45Mb removable Hard disk is a gem. Thats right, 45Mb in a 5.25"
hard shell cartridge. When you put it in the drive it is as fast as any
other 28ms disk. I comes up right onto the desktop so you can use
diskfit or HFS Backup 2.0. For AppleShare users, get Network diskfit
so you can backup the server over the network to your machine.

When Appleshare 2.0 arrives you'll be able to login as a SuperUser
so's you can 'see' everything on the drive to back it up. To do this with
version 1.1, the server has to be setup so the custodian has access
privilages to everything that the user creates. Welcome to
privilages city! AppleShare 2.0 will support print spooling to 5 printers
even AppleTalk Imagewriters too.

Enjoy!

Cheers! - Geo.

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D

jim@b-mrda.UUCP (Jim Sadler) (06/09/88)

My dream backup machine and software request.

capacity 1GByte in file format not image format.
media	 DAT or 8mm video tape.
speed 	 2 Mbytes per minute.

software AppleShare compatible and able to backup a server unattended.

It seems to be asking alot but I sure could use a couple of dozen of the
critters.



		jim sadler
		206-656-5422
		hpubvwa!b-mrda!jim
		P.O. Box 3707 MS 6R-24
		Seattle, Wa. USA 98124

	Any opinions expressed are mine and mine only and not that of my
	employer.  Also add in whatever else should be said at this point.

bayes@hpfcdc.HP.COM (Scott Bayes) (06/13/88)

>My dream backup machine and software request.
>
>capacity 1GByte in file format not image format.
>media	 DAT or 8mm video tape.
>speed 	 2 Mbytes per minute.

At 2MB/minute, backing up the full GB will take over 8 hours. That's
a pretty slow rate (2MB/min = approx 33 KB/sec). I should hope a modern
backup technology would come nearer 100 to 200 KB/sec; don't forget you've
probably got both the disc and the backup device on the same bus, sharing
its total bandwidth, and 1 CPU (no DMA :-( ) to do the job. But still, 
150 KB/sec seems reasonable, and would reduce your 1GB backup to approx
1-1/2 to 2 hours.

>
>
>		jim sadler
>		206-656-5422
>		hpubvwa!b-mrda!jim
>		P.O. Box 3707 MS 6R-24
>		Seattle, Wa. USA 98124

Scott Bayes - an impatient type
bayes@hpfclw