on 11-10-2010 2:21 PM
Hi!
The following configuration below is for 3-tier recomended landscape for my project on 150 users and 5000 SAPS SD benchmark. They are proposing 3 EXS Hosts + 1 Backup. Please advise. Thanks.
Development System
VM1 ECC: DB+CI
VM2 BW: DB+CI
VM3 PI: DB+CI
VM4 BOBJ
QAS System
VM5 ECC: DB
VM6 ECC: CI
VM7 BW: DB
VM8 BW:CI
VM9 PI: DB
VM10 PI: CI
Production System
VM11 ECC: DB
VM12 ECC: CI
VM13 BW: DB
VM14 BW:CI
VM15 PI: DB
VM16 PI: CI
VM17 Solution Manager
VM18 BOBJ
VM19 ECC: Apps
VM20 BW:Apps
VM21 PI:Apps
Welcome to SDN.
You have specified the VM configurations. And what your +1 backup server mean?
Development System configuration looks OK.
QAS System: Why do you need spate CI and DB? As you said you have only 150 users I don't think so you need spate VM for DB and CI.
Production System: Whats load on your ECC, BW, PI? mean how many concurrent users will be logged on? and whats the data volume on each applications. Depends on you need to take a decision. If there is not much load on your BW and PI then no need to have a App server or CI/DB can be installed one server and can have one App server.
Even though if you want to install app server later and Installation of APP server is not so diffucult and can be done in an hour.
Just clarify are you going to install your test and prod in MSCS cluster?
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Sunil:
I'm new to SAP. The configuration was provided by HP Partner and verfied by SAP SI.
I'm taking an extra step to make sure that they didn't over do it.
Backup server - If VMWare quicksizer for SAP mention 3 servers required then they proposed to add 1 more. Therefore, there will be 100% HA when 1 server collapsed. They named it N+1 Solution on VMWare.
No matter how, I only have 150 users. I don't see much different on what to load on ECC, BW and PI because of relatively small scale project.
Everything will be VMWare on of Blade Servers.
What's your suggestion?
>>I'm new to SAP. The configuration was provided by HP Partner and verfied by SAP SI.
hm! No comments.
>>I'm taking an extra step to make sure that they didn't over do it.
Looks like over config.
>>Backup server - If VMWare quicksizer for SAP mention 3 servers required then they proposed to add 1 more. Therefore, there will be 100% HA when 1 server collapsed. They named it N+1 Solution on VMWare.
OK.
>>No matter how, I only have 150 users. I don't see much different on what to load on ECC, BW and PI because of relatively small scale project.
Then I suggest you again revisit your QA and Prod landscape server configuration.
>>Everything will be VMWare on of Blade Servers.
Fine.
I am sure QA not required to have seprate CI/DB as your QA will not have 90 users.
About prod I think you can have CI/DB on one server and one app server for ECC.
For BW and PI you need to first check how much load will be? If its 20-25 users then I suggest you CI/DB on one server should be enough.
The following is the expected concurrent users:
FI CO - 7
ALM - 25
MM - 13
PP - 19
SD - 13
BW - 20
PI - 1500 messages per day through IDOC/XI/J2EE
PI - 6 Connections only for whole day.
Since users are accessing APPs VM only. Can we hide CI/DB behind a firewall? Then, CI/DB will not be expose to the entire network to prevent lesser threats from unknown or known source.
>>Since users are accessing APPs VM only. Can we hide CI/DB behind a firewall? Then, CI/DB will not be expose to the entire network to prevent lesser threats from unknown or known source.
What I suggest is to open only required ports to access SAP ie message server port, gateway port etc... If you go through the installation guide you will get an idea which ports SAP use.
What is the purpose of PI, are you going to send documents over the internet or third party connected to Internet? Or only internal purpose? The scenarios are documented in the PI installation guide.
Mean your servers are not external facing (internet), then I suggest to open required ports ONLY on your LAN or WAN networks should be OK. And do not disclose the administration userID of your SAP system and database.
Also you need to proivde only required authorization to the enduser using roles (SAP Standard security tool)
I have changed my VM landscape as such:
Development system
VM1 ECC: DB+CI
VM2 BW: DB+CI
VM3 PI: DB+CI
VM4 BOBJ
QAS System
VM5 ECC: DB+CI
VM6 BW: DB+CI
VM7 PI: DB+CI
VM8 BOBJ
Production System
VM9 ECC: DB+CI
VM10 BW: DB+CI
VM11 PI: DB+CI
VM12 BOBJ
VM13 Solution Manager
VM14 ECC: Apps
VM15 BW:Apps
VM16 PI:Apps
Should be alright for 150 users right?
Martin.
This are the guidelines provided by the vendor.
SAP Central System Server (App + DB) = 1 x Intel E5540 2.5GHz, 16GB (double up from 8GB for additional buffer) memory
SAP Application Server = 1 x Intel E5540 2.5GHz, 10GB memory (60% of Central System Server)
Assume SAP Development server is 1/3 of production server = 1200 SAPs, hence 1 x Intel E5540 2.5 GHz, 6GB memory
SAP Dev is 1 x Intel E5540 2.5 GHz, 6GB memory
Assume SAP QA/Test is identical size to production, hence 1 x Intel E5540 2.5GHz, 8GB
SAP Test/QA is 1 x Intel E5540 2.5 GHz, 8GB memory
SAP Solman Server = 1 x Intel 5504 2.0 GHz, 6GB Memory
For every 100 Users, SAP recommend 1 CPU, 4GB Memory:
SAP BO Server = 1 x Intel 5540 2.5 GHz, 8GB
I'm not sure how accurate is this?
Based on SAP sizing for VM, the results are:
Physical Machines
2x Proliant BL460c G6 Server 2P
Intel 6 - Core 2.93Ghz / 12 MB Cache
57,344 MB RAM
Disk (DAS) - 4 Disk
Installation (I) - 4 Disk (72GB 15K SAS 6G 2.5DP HDD) RAID 10
> This are the guidelines provided by the vendor.
I personally wouldn't install a server with 1 CPU only. You can nicely overcommit your CPUs. A database is multi-threaded, every J2EE engines starts up with services in parallel, if you do SP installations you can increase from a better parallelism if you choose more than 1 CPU. A single CPU increases latency because processes have to "wait" for the CPU to get free, the OS schedule can do a much better job with at least 2.
Markus
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