Sybase replication server configuration/installation

[suresh712]

Hi All,

We are planning for replication server from PRD to new server.

Can somebody help me by answering below questions.

• What are the prerequisites for replication server installation?
• Do we need to install replication server in both machines?
• Do we need separate machine for replication server?

Environment:

DB Version: ASE 16

SAP: ECC6 EHP7

DB Size: 65GB

Regards

Suresh

[hans-juergen_schwindke · Accepted solution]

Hi,

in your case (Replication Server for SAP applications) more information can be found using the keyword "hadr".

There is a good presentation giving an overview:

http://scn.sap.com/docs/DOC-68125

and here is the users guide:

http://scn.sap.com/docs/DOC-65921

Regarding your question (I'm familiar with the Linux setup):

1. Sizing for the Replication Server depends on the load of the system, especially the data volume on the primary site. If you replicate around 25 GB per hour, your require 4 CPUs and 8 GB memory. If your workload is 50% of it, you can reduce the CPUs and memory also by 50%.

I'm not aware of any special prerequisites. Of course all hosts must know each other; maybe they are located in different data centers in order cover the failure of one data center.

The installation and setup is done with SWPM (aka SAPinst).

2. The HADR setup for SAP applications requires two Replication Servers

3. You can install Replication Server on ASE hosts as well but it is recommended to use separate hosts.

Best regards,

Juergen