Thanks again for the fast responses to my request.
Instead of just including a bunch of numbers, I would like to re-post
the answer I received from Jochen Bern (bern@uni-trier.de). Richard
Hellier (rlh@cppuk.co.uk) sent me the same numbers as well.
My ORIGINAL request:
> Just acquired a 4-mm DDS DAT tape on our HP server and would like to use
> the regular "dump" command for backups from our SUNs. Does anyone have
> any suggestions for density, size, and block factor for 90 meter tapes?
>
> Tape Drive is C1504C with compression allowing for up to 8 GB of data.
>From bern@kleopatra.Uni-Trier.DE Fri Sep 10 09:29:47 1993
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Date: Fri, 10 Sep 93 09:29:38 +0200
From: bern@kleopatra.Uni-Trier.DE (Jochen Bern)
Message-Id: <9309100729.AA27251@kleopatra.Uni-Trier.DE>
To: Phillip.Dale@cs.umu.se
Subject: Re: Need dump parameters for DDS DAT tapes
Reply-To: bern@uni-trier.de
Status: RO
If the Heart of it is a HP 35480A, you might find this one useful (I sent
it around a Lot when our Newsfeed was still usable, because there seems to
be a Lot of 35480As without Docs on the Market):
----- Begin Included Message -----
Seeing all these Posts about "How to connect DATs", I conclude that us
Krauts are just lucky since HP gives us a good, usable How-To Sheet.
Here's my That's_About_It (tm) Translation; I put "<!>" wherever the
Info could be subject to a Housing supplied / Assembly done by your Vendor.
============================================================================
HP 35480A
=========
Jumper Switch Settings
----------------------
<Jumpers are numbered 1-5 from the Middle of the Rear View to the Side>
1: term power
2: SCSI Id Bit 0 (1)
3: 1 (2)
4: 2 (4)
5: DC on/off using ext. Cable
<!> Assembled Subsystems will have Switches on the Back to set the SCSI Id.
<!> We deliver the Drive with Id 4 (/dev/rst0).
Further Configuration can be done with the Dip Switches on the Bottom of
the Device. Set the Switches to 1, 2 on, 3 off, 4, 5 on, 6, 7, 8 off normally.
Termination
-----------
<!> We deliver the Drive with Terminators pulled out.
LED Status Codes
----------------
Green - Blink.Green: Caution, Media Wear.
Amber - Amber: Termination / high Humidity
Blink.Amber - Blink.Amber: Self Test in Progress
Blink.Amber - off: Self Test failed
Configuration
-------------
1. In /sys/scsi/targets/st_conf.c, add: <Note that this seems to mean
only SunOS 4.1.x, or am I wrong?>
/* HP DAT HP35480A */
{
"HP35480A", 2, "HP", ST_TYPE_EXABYTE, 1024,
( ST_VARIABLE | ST_BSF | ST_BSR ),
5000, 5000,
{ 0x00, 0x00, 0x00, 0x00 },
{ 0, 0, 0, 0 }
}
2. cd /sys/sun4c/conf <Note that this assumes you use
config GENERIC a sun4c Machine and a GENERIC
cd ../GENERIC Kernel, and that you're currently
make logged into THAT Machine, AND
mv /vmunix /vmunix.old that it is where you build Kernels,
mv ./vmunix /vmunix too>
3. Reboot
4. Dump with:
dump 0ubdsf 126 27000 <Size> /dev/rst0 /dev/sdXX
where /dev/sdXX is the Drive you want to dump, and Size is:
60 m Tapes: 24000 compressed, 6000 non-compressed
90 : 36000 9000
<and where you should replace /dev/rst0 with the Device Name you REALLY
used for the DAT Drive :-)>
Remark
------
Compression can't be software controlled on SUNs; You have to manipulate the
first two Dip Switches. If both are on, Compression is on.
<!> We deliver the Device with Compression turned on.
============================================================================
Hope that helps,
J. Bern
----- End Included Message -----
-- /Phillip DalePhillip Dale Internet: pdale@cs.umu.se Dept. of Computing Science Phone: +46 90 166945 Umea University Fax: +46 90 166126 S-90187 Umea, Sweden Home: +46 90 132520
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