Article View: comp.sys.mac
Article #4976Tape problem fixed!
From: Phil Hunt
Date: Thu, 21 Sep 1989 18:53
Date: Thu, 21 Sep 1989 18:53
39 lines
1992 bytes
1992 bytes
Hi,
Well, I finally solved my tape backup prblem. To give a short description of
the problem:
I have a TEAC N50 (Macproduct 150 meg tape backup unit). I couldn't get it to
work with Fastback II (Errors 110,120,150). With retrospect, it eith hung after
60 or so meg or would give random I/O errors (Error -36), sometimes, it would
die with the error (Hardware error=203 tape speed too slow).
Well, I returned the drive (It was brand new), got a new one back and it still
did it.
It turns out to be SCSI TERMINATION!!
My setup was as follows:
Mac---Internal Disk----External Disk---------Teac
(Term built in) (Term built in) (NOT TERMINATED!)
So I had a device AFTER the last terminated device on the bus...Solution?
Move the Teac before the External HD......Works great now.
Drive is super fast, Fastback II is 2.4 meg/minute (With compression),
Retrospect is 4-5meg/min (Without compression)...Oddly enough though,
FB II is only marginally faster with compression turned off (either off or
set to save time).
I still find it hard to believe 150+meg fits on a tape that looks exactly like a
phillips cassette!!!!
BTW, Retrospect actually wrote 166 meg on a 150 meg tape.....
==================================================================
Phil Hunt "Wherever you go, there you are!!!"
Digital Equipment Corporation Phone: (508)486-2164
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!watmath!att!dptg!rutgers!cs.utexas.edu!mailrus!uflorida!haven!decuac!shlump.nac.dec.com!vaxphw.enet.dec.com From: phil@vaxphw.enet.dec.com (Phil Hunt) Newsgroups: comp.sys.mac Subject: Tape problem fixed! Message-ID: <4877@shlump.nac.dec.com> Date: 21 Sep 89 18:53:57 GMT Sender: news@shlump.nac.dec.com Organization: Digital Equipment Corporation Lines: 39