How to read a tape device on a other HP-UX server

[Co van Berkel]

Hi,
- Server-1: HP9000/L2000 server with HP-UX 11.00 and a DDS3 drive.
- Server-2: HP9000/rp4440 server with HP-UX 11.11 (11i v1) and a DDS4 drive.

On server-2 we want to read a DDS-1 tape, inserted in the DDS3 tape drive of server-1.

Is this possible?
If yes, how to proceed?

We only can read these DDS-1 tape on the DDS3 drive and not on the DDS4 tape drive.

Regards,
CvB

[RikTytgat]

There is a command named rmt(1M). It is a "remote magnetic-tape protocol module". It is used by frecover and fbackup to create backups on remote tape devices.

Maybe it can help you with what you're trying to do.

Regards,
Rik

[Leif Halvarsson_2]

Hi,
It depends on the tape format (which application that has created the tape). For example, if fbackup or ftio, you can specify a tape device on a remote system in the command options.

Maybe the most general solution is to restore to a temporary location, create a tar file of the data and ftp to the remote system.

[Co van Berkel]

Hi,
The tape is created on a HPe3000 server and is a backup tape!

We need are in a process of converting a HPe3000 server to Windows, yes Windows.
The tape's created on the HPe3000 aren't readable under Windows.
So want to read the tape's under HP-UX and using "rosetta" convert this to file's who are in a readable format for windows.
Becose we need to read also the old tape's, to ten years ago back, we also has to read DDS-1 tapes.

Regards,
CvB

[Paul_481]

Hi,

Yes it is possible.

Step 1.

Be sure that both server are defined in the /etc/hosts of each other.

Step 2.

Create an .rhost on server-1.

#cat > .rhost
server-2

Step 3.

Perform the operation you want on server-1 tape drive from server-2.

to check the contents of the tape

#frecover -f server-1:/dev/rmt/0m -I /tmp/log.out


to recover

#frecover -f server-1:/dev/rmt/0m -rv

Hope this helps,

Regards,
Paul

[Devender Khatana]

Hi,

Another way of doing it simply is to mount a File system through NFS on server1 from server2 and extract it to that file system on server1.

HTH,
Devender

[Co van Berkel]

Hi,
Is it possible to mount a remote tape-unit?

The HPe3000 tapes can only be read with "rosetta" and not with "frecover"!

Regards,
CvB

[Leif Halvarsson_2]

Hi,

I am not sure if I understand you correct.

Server1 and Server2 in your original question is both HP-UX.

But,
"The tape is created on a HPe3000 server and is a backup tape!"

Is "rosetta" a HP-UX utility for reading e3000 (MVS ?) tape format ?

There is no general way in HP-UX to use a remote tape device. It depends on the command if it is possible to specify a remote device or, perhaps use some tricks with remsh and pipes (and, I know nothing about rosetta).

I would recommenend you to try the method in my previous reply, read the media from the local drive to a temporary location, pack into a tar file and transfer with ftp.

[Co van Berkel]

Hi,

1. HPe3000 isn't MVS but MPE/iX.

2. Application "rosetta" is a special application for reading HPe3000 (MPE) tapes on a HP-UX server.

3. Application "rosetta" is installed on server-2 and not on server-1.

Regards,
CvB

[Leif Halvarsson_2]

Hi,


Sorry for the mistake about MVS/MPE.
Now I understand the problem better.

As I wrote in a previous reply there is no "general" method in HP-UX for using a remote device. It is application-dependant.

Check the documetation for rosetta, does it mention anything about remote devices ?

If not, perhaps a workaround is possible but as I know nothing about rosetta, I am not sure. I belive rosetta is not a standart HP-UX utility, I tried a forum search and found nothing.

As I can see, you have two options.

- Temporary move the DDS 3 drive to Server2.
- Install rosetta also on Server1.

[G.G.krishnamoorthy]

Hi,

DDS4 drive can read tapes written on DDS3,DDS2 drives. Also it can read DDS-1 90 meter tape.

Considering this, the best option left out is to install DDS3 drive temporarily.

- Krishna

[Co van Berkel]

Hi,
Thanks for your answers.
What we already expected, temporary install the DD3 seems to be for us the best option.

Regards,
CvB

[Co van Berkel]

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