Changing OS of Central Instance, is it a heterogenous Systemcopy?

[janlars_goedtke]

Hello,

I can't find a clear document.

We have a distributed landscape.

We want to change the OS of the Central Instance from AIX to Linux. The DB Sever remains the same (HANA/Linux).

Is it a heterogenous copy?

The guides etc. don't mention distributed landscapes.

To my mind I'll stop the system, install the new CI, move releveant files (Joblogs etc to the new instance) and restart it. Perhaps a bit postprocessing because of changing hostnames.

So no additional Export/Import will be needed as the DB remains untouched....

Thanks

Jan

[Sriram2009 · Accepted solution]

Hi Jan

1. Yes, you have to follow the Heterogeneous system copy method since the OS level changes

2. Before stating the export take full backup of your CI & DB in OS AIX

3.

 So no additional Export/Import will be needed as the DB remains untouched....

Its depend on you storage space availability & if your changing the SAP- SID

Regards

Sriram

[divyanshu_srivastava3]

Hi Jan,

To my mind I'll stop the system, install the new CI, move releveant files (Joblogs etc to the new instance) and restart it. Perhaps a bit postprocessing because of changing hostnames.

Yes, you will stop application server and then install new PAS, move relevant files(including host and services) and post-processing, including keys and updating IP/hostname(where-ever used).

This is not a system copy - homogeneous or heterogeneous.

It's not a migration of system, it's just a switching of application platform.

Regards,

Divyanshu

[Reagan]

Your DB instance is running on the same platform and there is no need for a heterogeneous system copy. You just need to install the CI on the new server and start SAP and install the license.

Regards

RB