HP 1533A DAT TAPE DRIVE

HP 1533A DAT TAPE DRIVE

Post by Paul Middleto » Fri, 07 Jun 1996 04:00:00



Hi

I am running a a HP 1533 Dat Tape drive on a Compaq SCO UNIX 4.2 and find
that the tape drive does not do a non-rewind function (nrct0/nrStp0). All
the normal backups work, both tar and cpio.

Does anybody have any clues ???

--
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Champagne tastes,
lemonade money.

 
 
 

HP 1533A DAT TAPE DRIVE

Post by Carsten Gramm » Fri, 07 Jun 1996 04:00:00


: Hi
:
: I am running a a HP 1533 Dat Tape drive on a Compaq SCO UNIX 4.2 and find
: that the tape drive does not do a non-rewind function (nrct0/nrStp0). All
: the normal backups work, both tar and cpio.
:

What do you mean by "non rewind function"? We are using this type of drive
without problems.

Carsten.

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HP 1533A DAT TAPE DRIVE

Post by Chris Drauc » Sat, 08 Jun 1996 04:00:00


Paul Middleton wrote

Quote:

>I am running a a HP 1533 Dat Tape drive on a Compaq SCO UNIX 4.2 and find
>that the tape drive does not do a non-rewind function (nrct0/nrStp0). All
>the normal backups work, both tar and cpio.

Absolutely correct. To use the rewind device -> rStp0.
                                                =
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HP 1533A DAT TAPE DRIVE

Post by Paul Middleto » Sun, 09 Jun 1996 04:00:00



Quote:

> Hi

> I am running a a HP 1533 Dat Tape drive on a Compaq SCO UNIX 4.2 and find
> that the tape drive does not do a non-rewind function (nrct0/nrStp0). All
> the normal backups work, both tar and cpio.====>snip<====

Hi all,
        To expand on Kevin's problem; we are attempting to access the tape drive
using the 'no rewind option' ie, after a read or write the tape should not
be returned to the BOT. Any further read or write is then attempted from the current
position on the tape.
We'd usually use the device /dev/nrStp0 which has the minor number 12, indicating
(if I can remember without reading the man page) bits 2 - no unload and 3 - no
rewind, set for this function, rather than /dev/rStp0 which has a minor number of 0
and automatically rewinds the tape to BOT after each read or write.
However; no matter which /dev entry we use, with whatever minor number, the tape
ALWAYS rewinds.
My own feeling is that the drive is faulty, but we can't arrange for that idea to be
tested for another couple of days, so; Any Suggestions Would Be Particularly Useful!
T, as ever, IA
The REAL PaulM.
--
Polar City Blues;
Champagne tastes,
lemonade money.
 
 
 

HP 1533A DAT TAPE DRIVE

Post by Jeff Hyma » Tue, 11 Jun 1996 04:00:00



> Hi

> I am running a a HP 1533 Dat Tape drive on a Compaq SCO UNIX 4.2 and find
> that the tape drive does not do a non-rewind function (nrct0/nrStp0). All
> the normal backups work, both tar and cpio.

> Does anybody have any clues ???

> --
> Polar City Blues;
> Champagne tastes,
> lemonade money.

I yanked this from the LONE-TAR FAQ.

###############################################################################
KEYWORDS: 4mm DAT eject remove pop out 8mm ejecting rewind norewind nurStp0
===============================================================================

QUESTION: How do I PREVENT my 8mm or 4mm DAT from ejecting after each event?

ANSWER:   Add 4 to the minor number of the device, or look inside '/dev'
          for another device name that has a minor number +4 then what
          you are currently using.

NOTES:    Lets say you are using '/dev/rStp0'. Many systems will include the
          same device name beginning with the letters 'nu'.... which stands
          for "NO UNLOAD".

          # ls -l /dev/rStp0 /dev/nurStp0
          crw-rw-rw-   1 root     root      46,  4 Mar 23  1993 /dev/nurStp0
          crw-rw-rw-   2 root     root      46,  0 Apr 18 10:10 /dev/rStp0
          This is the major number here -----^
          This is the minor number here ---------^

          If you do not have the NO UNLOAD driver, then here's how to make it:

          # mknod /dev/nurStp0 c 46 4

          In this example, you would naturally substitute the correct device
          name in place of 'rStp0'... you may be using 'rct0' or something
          else. This capability is a function of UNIX, and not LONE-TAR.

###############################################################################

 
 
 

HP 1533A DAT TAPE DRIVE

Post by Simon Hobs » Thu, 13 Jun 1996 04:00:00




> I am running a a HP 1533 Dat Tape drive on a Compaq SCO UNIX 4.2 and find
> that the tape drive does not do a non-rewind function (nrct0/nrStp0). All
> the normal backups work, both tar and cpio.

I have had similar problems (under 3.2.4) and found that the minor device
numbers for the tape special files were wrong (there is a table in the
manuals under the 'tape' heading that gives the minor device numbers
required for the various options). IIRC (and this is from memory), 0 gives
a rewind and unload function, 4 a rewind and not unload, and 12 a
non-rewind.

Hope this helps, Simon

 
 
 

HP 1533A DAT TAPE DRIVE

Post by Henrik Bechma » Fri, 14 Jun 1996 04:00:00



>snip<

: Hi all,
:       To expand on Kevin's problem; we are attempting to access the tape drive
: using the 'no rewind option' ie, after a read or write the tape should not
: be returned to the BOT. Any further read or write is then attempted from the current
: position on the tape.
: We'd usually use the device /dev/nrStp0 which has the minor number 12, indicating
: (if I can remember without reading the man page) bits 2 - no unload and 3 - no
: rewind, set for this function, rather than /dev/rStp0 which has a minor number of 0
: and automatically rewinds the tape to BOT after each read or write.
: However; no matter which /dev entry we use, with whatever minor number, the tape
: ALWAYS rewinds.
: My own feeling is that the drive is faulty, but we can't arrange for that idea to be
: tested for another couple of days, so; Any Suggestions Would Be Particularly Useful!
: T, as ever, IA

Did you install the Enhanced SCSI Tape Driver Supplement
(ftp://ftp.sco.com/SLS/uod376c*)?

It solved my problems with an HP 35480 on an Open Server 3 system.

Henrik.

 
 
 

1. Problems with HP 1533A DAT Tape and Altos SCO

Can anyone help with the following problem ??

I am getting an error message when I link a HP 1533A DAT Tape drive (4GB
compressing to 8) to an Altos 7000 running Altos SCO V3 release 4.2aC1. When I
try to read or write to the device, the following message appears:

Stp: hp_stp_setbsize
Cannot get block limits reading SCSI tape 1 dev 49/0 ha0 id5 lun 0 block=4200
Possible media change - you may need to reinput command

This tape replaces a SONY 5000 2GB DAT Device which appears to work ok. I have
removed and re-inserted the tape using mkdev, and re-linked the kernel. The
machine in question uses an arad device driver through an on board Adaptec 7770
adapter. I know the Tape Device works on an Altos 7000 with an alad driver
through an Adaptec 7870 adapter, running SCO V5, but I need to keep the Altos
version of SCO on the machine in question to support a Multidrop Card and TCU's
attached to it.

Any suggestions to help resolve this problem would be most welcome, either
through a posting or via E-Mail.

Thanks in advance.

Bob Dawson
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