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Is anyone running SAP ERP or BI (NW 7.0) HA , clustering?and how'da do that

MPGraziano
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We are putting together plans and recommendations as to performing an upgrade of possibly the MS OS from 2003 to 2008, and SQL 2005 to 2008.

But, want to present options and costs of doing either an inplace upgrade of sql 2005 to 2008 (which I've done much of the research already). The prequisits for doing an inplace upgrade of 2005 and 2008 on Win 2003 is the cheaper option. But for us to take advantage of HA and IF available for SAP clustering, then we would want to upgrade Windows to 2008 as well.

Has anyone done this or is in the process ? and what plans are there? what would the landscape look like ? Is a sapinst required (to install SAP again) in order to take the path of installing SAP with HA, and is clustering supported by SAP?

Thanks!

maria

Accepted Solutions (1)

Accepted Solutions (1)

Former Member
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Maria, what I guess is you are planning to install SAP clustering

well clustering is very well supported by SAP

in that case you will need to use SAPINST to install SAP on both nodes

there are lots of installation documents available on market place regarding high availabilty installations

Rohit

Answers (1)

Answers (1)

former_member185031
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Yes. We are using ECC & BI system on HA with OS level clustring as well as Oracle RAC, it is well supported by SAP, but it is a complex procedure you have to read the instllation guide and you need some experts also for Clustering and HA system installation.

Regards,

Subhash

MPGraziano
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Do either of you have any links I can use so that I can get some idea of what is involved, in reference to costs etc...

thanks

maria

former_member185031
Active Contributor
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You can refer these links.

http://www.saptechies.com/important-information-on-upgrading-sap-systems-in-hasetups/

http://scn.sap.com/docs/DOC-25454

when we were implementng the HA system we were used the Standard guide which is available on service marketplace and lot of information got from SDN, but moral is this that you have to read it carefully and understand how actually HA system works.

On the cost propective i cannot help you as i dont know but we are using Dell 2950 Intel Xeon 3.00 with 12GB Ram. We have 4 boxes for ECC, Two boxes for Oracle RAC and 2 for HA system and same for BI also.

Hope this help

Regards

Subhash

Edited by: Subhash Chandra on Apr 9, 2009 8:22 PM

MPGraziano
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I have installed a number of ERP and Netweaver BI and SolMan systems,

Are you recommending to have consultants working with us to complete this?

maria

As well would I need to re-install our current ERP and BI (production ) systems in order to make them part of the cluster? or ??

maria

Former Member
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Yes i would recommend you to work with trained professionals on cluster as clustering could be quite complex thing

Also you will need to install SAP again as I assume to suit to your clusering requirements

by the way which cluster software are you planning to use-I would recommend Microsoft windows cluster

Rohit

former_member185031
Active Contributor
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Are you recommending to have consultants working with us to complete this?

Yes. You need to work some expert People.

As well would I need to re-install our current ERP and BI (production ) systems in order to make them part of the cluster? or ??

Yes, becuase there are some different installation for Distributed system and HA system.

Clustring can be done before the installation and after the installation both but again you need some experts..

Regards,

Subhash

Edited by: Julius Bussche on Apr 9, 2009 10:37 PM

Expert SDN people dont use code tags for quote tags either, because this messes up the formating => short dumps which I corrected for you...

MPGraziano
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This documentation on the SDN is great but,

does anyone actually have SAP papers? for install and configurations?

Thanks

maria

MPGraziano
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Julias, or anyone

Could someone give me an indication or estimate of how the HA with MS clustering would look like with our existing landscape?

we have sndbox, dev, qas and prdn installed on Win2003 , SQL 2005, ECC 6.0. Our goal would be to have MS Clustering installed as a HA option for contingency and failover.

Are you then recommending that a new install of ECC 6.0 would be the most desired approach in order to achieve HA for our ECC Prodn server.

So what I would need is;

1 Server for ECC Prdn (prim. node)

1 Server for ECC Prdn failover (sec. node)

Do I need a third server for the heartbeat monitoring and failover (not sure of the correct terminology)

Also, both servers in the cluster would require most recent Support Stacks, and Kernel Patches.

AND it sounds like the install needs to be re-done for both servers? is this a correct assumption.

Will SQL 2008 run on Win 2003 and have HA MS clustering available to us as well on Win 2003?

maria

Former Member
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Hello Maria,

yes you are right

you need to install SAP ECC on both the nodes(you will need to have two servers) but I feel It would be a better startegy to run CI on one node and DB on 2nd node

This has quite a few advantages:

1. If your node 1 goes down then the cluster will automatically move the services to 2nd node and vice-versa

2, This also helps in reducing the load on one server,if you run both CI and DB on one server,this wil mean a high load on one server

why do you need a third server?cluster will do everything for you

why willl both the servers require recent packs?the only thing is they need to be on same support pack lever,whatever it may be

yes installation is needed on both nodes

Clustering is available on win 2003 server thats is not an issue at all

Rohit

MPGraziano
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Thanks Rohit, I got that cleared from my MS specialist here as well.

I am looking also for Geo clustering, and the only documents I have found is that SAP does not suport the configuration in SAP for Geo clustering. They recommend that the HW vendor must install and support

SAP support only same data centre (which defeats my purpose of have single point of failure)

Has this changed?

MPGraziano
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btw, the load is taken very well, as we have both CI and DB on one server currently.

We are not a big shop, currently running only FI/CO/MM, and in the process of bringing HCM up 2010. for payroll, time and labour

I'm not sure how performance will be effected by introducing HCM (more data, more users), but the sizing was done by HP to accomodate for this

maria

Former Member
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No Maria

This has not changed at all

Refer to https://www.sdn.sap.com/irj/sdn/landscapedesign?rid=/webcontent/uuid/b09d53ac-8b0f-2b10-6798-ecfd558... [original link is broken]

It contains a lot of valuable info about Clustering as well SAP support for Geo(which SAP does not suppport)

Rohit

MPGraziano
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Are there any Best Practices Guide when considering HA and MS Clustering?

maria