Enque replication SErver

[Former Member]

EXPERT!!

I am Preparing the pre-requistes for the Installlation of Production on HA server. the document what i downloaded from the OSS about the Installation of HA. the quoted that "if required, you install an enqure replication server"

some one please explain me, if we leave this option on HA server, what will be affect on the HA ?

IS CI + Dialogue Instance should install on Local Disk or Shared disk for the HA ?

Regards

Anwer Waseem

SAP BASIS

[Former Member · Accepted solution]

Hi Anwer,

Ín my opinion it is very helpful to have enque replication service. In case enque service fails and is started on the other cluster node then lock entries are rebuild from the replica table created as a result of this service and hence no roll back is done.

Also it is better to have CI and DI on a shared disk from HA perspective.

Please award points if you found the answer useful.

Regards.

Ruchit.

[Former Member · Accepted solution]

Ruchit

I am using the SQL 2005 sp1 on windows server 2003 IA64

Thanks very much for your expert opinion that enque replication service is necessary for the HA. does roll back exist in sql 2005 as in oracle ?

SAP has mentioned in the installation guide that CI & DI should be on local disk, do not enter the shared disk A(SCS) instances. also the diagram is complete self explanatory that CI on Node A and DI should be on Node B.

Can I use the CI & DI instance on the new shared disk instead of local and A(SCS) disk. ?

If do i use the CI & DI instance on local disk then how the failover will switch to Node B where the CI not exist ?

Regards

Anwer Waseem

SAP BASIS