SAP ECC6.0 with EHP5+SAP Netweaver EP 7.3 cluster

[Former Member]

Hello All,

I am facing once challenging issue any calrify me your valluble inputs on below points

1) We have 2 server each server s having 2 nodes for clustering

2) Now my clinet is asking to install ERP 6.0 with EHP5 and SAP Netweaver EP 7 .3 on same machine and do the clsutering is it possibel or not?

3) If possible how can we handle for example ERP is down in node1 and EP is running in node1 ,in this scaniro how can we handle cluster

PLease suggest and guide how to proceed further

Thanks

[former_member215961 · Accepted solution]

Hello,

1) We have 2 server each server s having 2 nodes for clustering

Ok.

2) Now my clinet is asking to install ERP 6.0 with EHP5 and SAP Netweaver EP 7 .3 on same machine and do the clsutering is it possibel or not?

If you refers to instal 2 instances at MSCS Cluster 2008 R2 the answer is yes it is.

3) If possible how can we handle for example ERP is down in node1 and EP is running in node1 ,in this scaniro how can we handle cluster

Just follow the HIGHT AVAILAVILITY recommendation at Installation guide :

https://websmp103.sap-ag.de/~sapidb/011000358700001406842012E

See  Chapter 8 High Availability with Microsoft Cluster Service . .

Thanks

[Former Member · Accepted solution]

HI All,

Thanks very much for your repplys

But My client requirement is chnageed we need to cluster only erp 6.0 ehp6 .

But after reading Master guides and installtion guides I am having confusions please calrify me below points

1))WE have 2 physical servers is it sufficient to go for clsutering

2) Is it requires in each server 2 nodes or total nodes will be two?
3)How many I.P required?
4) How many Hostnames required
5) We need to install databse and cI on each serer ?
6) They said database space will give in sand box

Please suggest and guide me

[former_member188883 · Accepted solution]

Hi ,

1))WE have 2 physical servers is it sufficient to go for clsutering

           YES

2) Is it requires in each server 2 nodes or total nodes will be two?

              Total nodes will be 2 in number

3)How many I.P required?

             Minimum 5 IPs will be required. 2 for physical host and 2 for virtual hosts and 1 for cluster server IP.

4) How many Hostnames required

            2 Physical and 2 virtual hostnames required.

5) We need to install databse and cI on each serer ?

                 Database on 1 server and CI can be on another server.

6) They said database space will give in sand box

          Question is not clear. You need to elaborate

Hope this helps.

Regards,

Deepak Kori

[Former Member · Accepted solution]

HI Deepak,

Thanks for your prompt response .

Below points are not clarified Please confirm

1)We have 2 physcial server having space on each server 300 GB for clustering database prospective they said they will give the space from sand box to each server 500 GB for Production clustering ,this way can we install clsuter or not?

2)

5) We need to install databse and cI on each serer ?

                 Database on 1 server and CI can be on another server.

we need to consider oone physcial server should be CI and One Physcial server should be DB

Please correct me above if I am wrong

3) Is their any special precautions can I takae to SYbase ASE

4) How many directories(Drives)  required for clustering for Usr/sap and database prospectives

Thanks

[former_member188883 · Accepted solution]

Hi,

Refer SAP note only for reference. This should answer (2),(3) and (4)

Note 1651052 - SYB: MS Cluster: DB instance for failover(obsolete)

For Point(1)

It is recommended to have disk partitions from storage for the cluster resource groups.

If the disk space from sandbox is on the storage, then it should not be a problem.

Hope this helps.

Regards,

Deepak Kori

[Former Member · Accepted solution]

HI Deepak,

Thanks for your repply I have read the installtion guide in that they have mentioned regarding I.P Addres

Types of IP Addresses

In a correctly configured cluster with at least two nodes, there are at least seven IP addresses and

corresponding host names for your SAP system. You have two IP addresses for each MSCS node, one IP address for the cluster, one for the SAP cluster group, and one for the database cluster group.Some of the addresses are assigned to the

cluster group.

Can you plase calarify me one more point Now in my 2 physcial servers having 300 GB space & SAN storage for database having 800 GB ,Now this 800 GB need to map node1 or node2

Please suggest me

.

[former_member188883 · Accepted solution]

Hi,

You need to map 800GB of storage space to both Node1 and Node2.

Regards,

Deepak Kori

[Former Member · Accepted solution]

HI Deepak,

Thanks for you repply.

1)800 GB needs to shared disk to node1 and node2 right?

2)Node1 and Node 2 will active clusters ?

3)You have not repplied my question regarding I.P address earlier you said I.P addres 5 required ,Now fater reading the document required 7 I.P Address.

Types of IP Addresses

In a correctly configured cluster with at least two nodes, there are at least seven IP addresses and

corresponding host names for your SAP system. You have two IP addresses for each MSCS node, one IP address for the cluster, one for the SAP cluster group, and one for the database cluster group.Some of the addresses are assigned to the  cluster goup.

4)Is their any we need to do databse clsutering as well or ?

Please suggest

Advance Thanks

[former_member188883 · Accepted solution]

Hi,

3)You have not repplied my question regarding I.P address earlier you said I.P addres 5 required ,Now fater reading the document required 7 I.P Address.
Types of IP Addresses
In a correctly configured cluster with at least two nodes, there are at least seven IP addresses and
corresponding host names for your SAP system. You have two IP addresses for each MSCS node, one IP address for the cluster, one for the SAP cluster group, and one for the database cluster group.Some of the addresses are assigned to the  cluster goup.

For MSCS cluster additional IPs will be needed based on the resource groups as described in the guide. So follow the guide for IP details.

4)Is their any we need to do databse clsutering as well or ?

Separate Database clustering is not required. MSCS will take care of the same.

Hope this helps.

Regards,

Deepak Kori

[Former Member · Accepted solution]

Hi Deepak,

Final question Pleas helpme

1)Node1 and Node 2 will active clusters ?

2)Enqueue Replication Server instance (ERS)? we need to install this as well?

Do you any documentaion Please let me know I will share the my mail id to you

Thanks

[Former Member · Accepted solution]

Hi Deepak,

Please repply me

Its very urgent

Thanks

[former_member188883 · Accepted solution]

Hi,

1)Node1 and Node 2 will active clusters ?

Yes as per my suggestion it will be active active clusters

2)Enqueue Replication Server instance (ERS)? we need to install this as well?

Yes. it is good to install ERS else pending updates during the failover will be lost.

Regards,

Deepak Kori

[Former Member · Accepted solution]

Hi Deepak,

Thanks for your repply,based on your post I ma propsing to my client ,Please validate it would be helpful for me .

Server	Physical Server Drives	SAN Storage Drives
Development(CI+DB)	170 GB,1 Drive(SAP Application server)	300 GB,1 Drive (Database)
Quality(CI+DB)	170 GB,1 Drive(SAP Application server)	500 GB,1 Drive (Database)
Production Node1 (CI)	1 Drive (SAP Application Server)
Production Node2 (DB)	1 Drive (SAP Application Server)	800 GB ,Total 4 Drives(4*200GB)

IP Addresses Required:

Development Server    : 1 IP

Quality Server               : 1 IP

Types of IP Addresses High Availability System (Production):7 IP

In a correctly configured cluster with at least two nodes, there are at least seven IP addresses and

for your SAP system Corresponding host names. You have two IP addresses for each MSCS node, one

IP address for the cluster, one for the SAP cluster group, and one for the database cluster group.

Some of the addresses are assigned to the network adapters (cards), others are virtual IP addresses

those are assigned to the cluster groups.

Requirements for a High-Availability System

General requirements:

Windows Server 2008 R2:

1. 1. Cluster hardware is certified for Windows Server 2008 R2 and has the Windows

Server 2008 R2 logo.

1. 2. You must validate your failover cluster configuration by running the Validate a Configuration Wizard, which is included in the Failover Cluster Management snap-in. The Failover Cluster Validation Report must not show any warnings and errors.

The private network enables internal communication between the MSCS nodes. In particular, it enables the Cluster Service running on all MSCS nodes to regularly exchange messages on the state of the MSCS nodes so that the failure of resources is quickly detected.

Each of the MSCS nodes in the cluster must have its own local disks and have access to shared disks that can be reached by the MSCS nodes via a shared bus.

The MSCS nodes of the cluster must be connected by a private and public network:

The public network enables communication from the MSCS nodes of the cluster to other resources in the local area network (LAN).

[Former Member · Accepted solution]

Production Node1 (CI)	1 Drive (SAP Application Server)
Production Node2 (DB)	1 Drive (SAP Application Server)	800 GB ,Total 4 Drives(4*200GB)

[Former Member · Accepted solution]

HI Deepak,

Please confirm and suggets

[former_member188883 · Accepted solution]

Hi,

For Production Node1  & Node 2 :

You should 2 drives .

Local and shared

Local drives will hold all the content which are not part of cluster resource groups

Shared drives will hold the content which are part of cluster resource groups.

Rest other data shared  looks ok to me.

Hope this helps.

Regards,

Deepak Kori

[former_member188883 · Accepted solution]

Hi,

Hope that your query is answered. In this case you may close this thread.

Regards,

Deepak Kori

[Former Member]

Hi,

Can you give us some more basic information:

1. Windows or Unix/Linux?

2. Database

3. What is your clustering expertise (your team's experience)

Regards

Graham

[Former Member]

HI Graham,

Thanks for your response .

OS:Windows server 2008

Database :Sybase

Thanks

[Former Member]

Hi

Hm, I've not installed Sybase before, so I can't help you with that.  But I've not seen multiple SAP installations on one Windows cluster before, although many run on Unix. 

Have you checked the Installaiton or Master Guide?

Regards,

Graham

[Former Member]

Hello all,

Any one please suggest me is it possible or not ?

How can we handle the issue ?

Thanks