Server Relocation of SAP Systems

[mohammadwahidullah]

Hi,

We are planning to relocate (IP will not be changed) our SAP ERP HP-UX servers which includes one Development(Oracle DBApps) one Quality Assurance(Oracle DBApps) and One Production Server (Oracle DB+Apps) with other three Dialog instance servers, One Dialog instance server is also used for failover purpose. All these servers are using same central EMC storage.

Can you please suggest what may the best plan to relocate thease servers with a minimum down time and is there any technical settings change required? I am highlighting here is minimum downtime and also any precaution and post relocation actions that we should follow during the whole process.

Thank you in advance for the suggestion.

Regards

Wahid

SAP Technology Manager

[Former Member · Accepted solution]

Are you going to use the same host name (you mentioned same IP)? Are these servers will be on same physical hosts or different? Is your storage also moving along with your physical server or you are going to backup / restore of your data.

[mohammadwahidullah · Accepted solution]

Hi,

We will be using the same host name as previous and all the servers is in diffrent boxes and also be the same in new location. We also moving the storage also.

Regards

Wahid

[Former Member · Accepted solution]

Hi

The best way to migrate system is to take full file system backup of old box and copy this backup to new box and check the all mount for new box compared with old one.

Regards

Pinaki

[mohammadwahidullah]

OK. thanks everyone for the help

[Former Member]

Basically you have to detach the disks from the old server and reattach them to the new box.

So in short your procedure looks like this:

- stop the system

- move disks to new box

- change DNS to new box no DNS change required, as long as IP and hostname are taken over

- start system on new box

To guarantee a short downtime, you will have to create a "cookbook" while you migrate the dev system. Then do the migration on the test system, this will give you an estimate for the prod system. In your special case a problem seems to be, that only the prod system seems to be HA and has application servers. You will have to work out a plan to master this.

Do not forget to think about a fallback scenario and about backup/restore.

Besides that you will have to order new licenses, because the hardware key will change.

Cheers Michael

Edited by: mho on Dec 29, 2010 1:20 PM