System migration to cloud

[Former Member]

Hi All,

we have ascs and db in one host, DVEGM* in one host and Dialog instance in one host. Now we are looking to migrate DVEGM* to Dialog instance to cloud services. please can you suggest best approach. ASCS and DB will remain in physical host.

Thanks,
Ranjith

[Former Member]

I think of following approach you can think of...

1. If your physical OS and Cloud OS are same, then take tar or other backup of required file systems for DVEBMGS... and other application instances from physical host and copy it the cloud system. Then filesystems like /usr/sap/<SID>, /sapmnt/<SID> of physical host should be mounted to cloud system. It is assumed that in cloud system similar filesystems for DVE and application instances are created before copying source file system. Now if hostname remains same then the same profile files will work, else you need to change profile files to make this work.

2. Mount Source system files systems as mentioned above to cloud and run SWPM (Correct version in line with source system) and start installing Primary application server from the option of Distributed installation. Here when it asks for Central Instance's profile file, give the same of mounted file system's profile files. Then using the same option install Additional Application Instances...

[Reagan]

If there is a change in the hostname, then you just need to follow the system copy method (recommended) to move the CI and AS to cloud. You need to run sapinst and select System Copy - Target System Installation for CI and AS. You may consider deleting the profiles of the old CI and AS from the profile directory. If you need the job logs and other traces then consider moving them from the old hardware.

If there is no change in the hostname and if this is on a Unix system then the other option is to create similar filesystems on the target node and move the profiles, environment files there. In any way system copy is the recommended way.

[patelyogesh]

Hello,

If they are only ABAP systems you can use Database attach/detach method. If they are dual stack systems use system export.

Thanks

Yogesh