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- From: pvr@wang.com
- Newsgroups: comp.unix.sysv386
- Subject: Re: 120Mb tapes on SCO UNIX
- Message-ID: <BxI5B7.5JM@wang.com>
- Date: 10 Nov 92 13:25:54 GMT
- References: <Bx5yoq.70r@inet-uk.co.uk> <Bx85uK.6C4@mudos.ann-arbor.mi.us> <1992Nov6.232519.5474@mr.med.ge.com>
- Sender: news@wang.com
- Organization: Wang Labs, Lowell MA, USA
- Lines: 25
- Nntp-Posting-Host: preilley.wiis.wang.com
-
- frigo@asiago.med.ge.com (Fred Frigo 5-5806) writes:
-
- >You can write DC600A tapes in a 150 M byte drive, but SCO will
- >only allow you to put 60 M bytes on the tape. Regular 60M
- >byte drives (old Sun style) will not be able to read your tapes
- >produced on the 150 M byte drives, but the 60 M tapes produced
- >on the older drives can be read on the 150 M byte drives.
-
- This is not exactly correct. 150 Meg tape drives (QIC 150)
- cannot write in 60 Meg (QIC 24) format. DC600A tape cartridges
- are 120 Meg (QIC 120) tapes. Most QIC 150 tape drives will write QIC 120
- tape cartridges, but only in QIC 120 format. The tape type
- is automatically recognised by the drive. The format is
- encoded in the hole pattern at the beginning of the tape.
- Most QIC 150 drives can read QIC 24 tapes so there
- is backward compatibility for reading.
-
- The opreating system does not determine how much can
- be written to tape devices. The drive stops when it hits
- the end of media (EOM) mark. The reason that the tapes cannot
- be read on the Sun is that they are QIC 120 tapes and cannot
- be read on a QIC 24 drive.
- --
- >>>>>>>>>>>> Peter Reilley ..... pvr@wiis.wang.com ..... KA1LAT <<<<<<<<<<<<<
- Well, that about says it.
-