Date: Thu, 16 May 1996 05:32:23 -0500 From: "Daniel M. Eischen" <deischen@iworks.InterWorks.org> To: jamie@inna.net, questions@freebsd.org Subject: Re: HP Tapedrive Message-ID: <9605161032.AA16864@iworks.InterWorks.org>
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>I have installed an HP C1533A 4mm SCSI DAT drive on my FreeBSD machine,
>and am wondering about hp's cool (not) little toggle switches on the
>bottom....I need settings for those, if anyone can supply them. mt is
>returning totally invalid desity codes for the tape drive, and I really
>need to run backups on this machine soon. HP gives settings for sun,
>dec, and hp, but not pc...the scsi adapter is an Adaptec 2940UW. Any
>help is appreciated.
You didn't get the C1533A User's Manual with the drive? It will explain
the jumpers that are independent of Sun/HP/DEC/etc settings.
There are 8 DIP switches, with switches 1-3 being compression and MRS
settings, and switches 4-8 being used to specify drive connectivity and
functionality according to host or customer requirements (Sun/HP/DEC/etc).
Switches
1 2
On On - Compression enabled at power on, with host control
On Off - Compression enalbed at power on, no host control
Off Off - Compression disabled at power on, no host control
Off On - Compression disabled at power on, with host control
Switch 3
On - Media Recognition System (MRS) is disabled. Add DDS tapes
will be treated the same, whether they are MRS compliant or not.
Off - MRS is active. Non-MRS tapes are treated as if they are
write-protected.
Dan Eischen
deischen@iworks.InterWorks.org
P.S. Mine works great under FreeBSD with a 2940W.
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