Windows Physical Memory Limits for X86 and X64.

Physical Memory Limits: Windows 7

The following table specifies the limits on physical memory for Windows 7.

Version	Limit on X86	Limit on X64
Windows 7 Ultimate	4 GB	192 GB
Windows 7 Enterprise	4 GB	192 GB
Windows 7 Professional	4 GB	192 GB
Windows 7 Home Premium	4 GB	16 GB
Windows 7 Home Basic	4 GB	8 GB
Windows 7 Starter	2 GB	N/A

Physical Memory Limits: Windows Server 2008 R2

The following table specifies the limits on physical memory for Windows Server 2008 R2. Windows Server 2008 R2 is available only in 64-bit editions.

Version	Limit on X64	Limit on IA64
Windows Server 2008 R2 Datacenter	2 TB
Windows Server 2008 R2 Enterprise	2 TB
Windows Server 2008 R2 for Itanium-Based Systems		2 TB
Windows Server 2008 R2 Foundation	8 GB
Windows Server 2008 R2 Standard	32 GB
Windows HPC Server 2008 R2	128 GB
Windows Web Server 2008 R2	32 GB

Physical Memory Limits: Windows Server 2008

The following table specifies the limits on physical memory for Windows Server 2008. Limits greater than 4 GB for 32-bit Windows assume that PAE is enabled.

Version	Limit on X86	Limit on X64	Limit on IA64
Windows Server 2008 Datacenter	64 GB	1 TB
Windows Server 2008 Enterprise	64 GB	1 TB
Windows Server 2008 HPC Edition		128 GB
Windows Server 2008 Standard	4 GB	32 GB
Windows Server 2008 for Itanium-Based Systems			2 TB
Windows Small Business Server 2008	4 GB	32 GB
Windows Web Server 2008	4 GB	32 GB

Physical Memory Limits: Windows Vista

The following table specifies the limits on physical memory for Windows Vista.

Version	Limit on X86	Limit on X64
Windows Vista Ultimate	4 GB	128 GB
Windows Vista Enterprise	4 GB	128 GB
Windows Vista Business	4 GB	128 GB
Windows Vista Home Premium	4 GB	16 GB
Windows Vista Home Basic	4 GB	8 GB
Windows Vista Starter	1 GB

Physical Memory Limits: Windows Home Server

Windows Home Server is available only in a 32-bit edition. The physical memory limit is 4 GB.

Physical Memory Limits: Windows Server 2003 R2

The following table specifies the limits on physical memory for Windows Server 2003 R2. Limits over 4 GB for 32-bit Windows assume that PAE is enabled.

Version	Limit on X86	Limit on X64
Windows Server 2003 R2 Datacenter Edition	64 GB(16 GB with 4GT)	1 TB
Windows Server 2003 R2 Enterprise Edition	64 GB(16 GB with 4GT)	1 TB
Windows Server 2003 R2 Standard Edition	4 GB	32 GB

Physical Memory Limits: Windows Server 2003 with Service Pack 2 (SP2)

The following table specifies the limits on physical memory for Windows Server 2003 with Service Pack 2 (SP2). Limits over 4 GB for 32-bit Windows assume that PAE is enabled.

Version	Limit on X86	Limit on X64	Limit on IA64
Windows Server 2003 with Service Pack 2 (SP2), Datacenter Edition	64 GB (16 GB with 4GT)	1 TB	2 TB
Windows Server 2003 with Service Pack 2 (SP2), Enterprise Edition	64 GB	1 TB	2 TB
Windows Server 2003 with Service Pack 2 (SP2), Standard Edition	4 GB	32 GB

Physical Memory Limits: Windows Server 2003 with Service Pack 1 (SP1)

The following table specifies the limits on physical memory for Windows Server 2003 with Service Pack 1 (SP1). Limits over 4 GB for 32-bit Windows assume that PAE is enabled.

Version	Limit on X86	Limit on X64	Limit on IA64
Windows Server 2003 with Service Pack 1 (SP1), Datacenter Edition	64 GB(16 GB with 4GT)	X64 1 TB	1 TB
Windows Server 2003 with Service Pack 1 (SP1), Enterprise Edition	64 GB(16 GB with 4GT)	X64 1 TB	1 TB
Windows Server 2003 with Service Pack 1 (SP1), Standard Edition	4 GB	32 GB

Physical Memory Limits: Windows Server 2003

The following table specifies the limits on physical memory for Windows Server 2003. Limits over 4 GB for 32-bit

Version	Limit on X86	Limit on IA64
Windows Server 2003, Datacenter Edition	64 GB(16 GB with 4GT)	512 GB
Windows Server 2003, Enterprise Edition	64 GB(16 GB with 4GT)	512 GB
Windows Server 2003, Standard Edition	4 GB
Windows Server 2003, Web Edition	2 GB
Windows Small Business Server 2003	4 GB
Windows Compute Cluster Server 2003		32 GB
Windows Storage Server 2003, Enterprise Edition	8 GB
Windows Storage Server 2003	4 GB

Physical Memory Limits: Windows XP

The following table specifies the limits on physical memory for Windows XP.

Version	Limit on X86	Limit on X64	Limit on IA64
Windows XP	4 GB	128 GB	128 GB (not supported)
Windows XP Starter Edition	512 MB	N/A	N/A

Physical Memory Limits: Windows Embedded

The following table specifies the limits on physical memory for Windows Embedded.

Version	Limit on X86	Limit on X64
Windows XP Embedded	4 GB
Windows Embedded Standard 2009	4 GB
Windows Embedded Standard 7	4 GB	192 GB

Reference        :           http://msdn.microsoft.com/en-us/library/windows/desktop/aa366778%28v=vs.85%29.aspx#physical_memory_limits_windows_7

Configuring Apache for JBoss

Supported Platforms

Apache for JBoss Prerequisites

1. JBoss 6 server configured for App & running on port 8080

2. Latest version of Apache 2.2 including OpenSSL should be downloaded from following link http://httpd.apache.org/download.cgi
Note: Download appropriate version suitable for your operating system.

3. Download mod_jk2.so file from apache sites mentioned below & place it in D:\Apache2.2\modules

a. http://www.apache.org/dist/tomcat/tomcat-connectors/jk/binaries/

b. http://tomcat.apache.org/connectors-doc/

4. (Optional) Valid SSL certificate files available for your server in case you want to enable HTTPS.
e.g. App.cert & App.key file (file name differs as per your configuration)

Note: Please refer online installation guide for installing Apache2.2 on Linux / Unix. http://httpd.apache.org/docs/2.2/install.html

Installing Apache using MSI Installer in windows.

1. Execute httpd-2.2.20-win32-x86-openssl-0.9.8r.msi.

2. Click Next, Select “I Accept…” and click Next.

3. Click Next, Enter Domain Name, Server Name & Support Email Address, Select “for All Users,..” option and then click Next.

4. Select Custom & click Next, Open Dropdown next to “Apache HTTP Server 2.2.10” & Select “This Feature, and all subfeatures, will be installed on local Hard drive”, Click Change.

5. Change the Path of Apache install directory to non system drive, Click OK, Click Next.

6. Click Install,

7. Click yes/allow for any security or firewall alerts that may popup.

8. Click Finish on the “Installation Wizard Completed” Window.

Configuring apache for JBoss on http with Compression.

By Default Apache starts listening on port 80

1. Open file httpd.conf in editor & add following content after line “<IfModule !mpm_winnt_module>”

   1: ######## APP JBoss START ######### 

   2:  

   3: #Include conf/mod_jk/mod-jk.conf 

   4:  

   5: <IfModule worker.c> 

   6:  

   7: Startservers 6 

   8:  

   9: MAxClients 150 

  10:  

  11: MinSpareThreads 25 

  12:  

  13: MaxSpareThreads 75 

  14:  

  15: ThreadsPerChild 25 

  16:  

  17: MaxRequestsPerChild 0 

  18:  

  19: </IfModule> 

  20:  

  21: LoadModule jk_module modules/mod_jk2.so 

  22:  

  23: JkWorkersFile conf/mod_jk/workers.properties 

  24:  

  25: JkLogFile logs/mod_jk_error.log 

  26:  

  27: JkLogLevel error 

  28:  

  29: JkLogStampFormat "[%a %b %d %H:%M:%S %Y]" 

  30:  

  31: JkRequestLogFormat "%w %V %T" 

  32:  

  33: # JBoss site Start # 

  34:  

  35: <VirtualHost *:80> 

  36:  

  37: ServerAdmin support@JBoss.com 

  38:  

  39: ErrorLog "|bin/rotatelogs logs/App_error.%d.%m.%Y.log 10M" 

  40:  

  41: customLog "|bin/rotatelogs logs/App_Access.%d.%m.%Y.log 10M" common 

  42:  

  43: JkMount /* loadbalancer 

  44:  

  45: LoadModule deflate_module modules/mod_deflate.so 

  46:  

  47: SetOutputFilter DEFLATE 

  48:  

  49: SetInputFilter DEFLATE 

  50:  

  51: AddOutputFilterByType DEFLATE text/html text/plain text/xml text/x-js text/css application/x-javascript 

  52:  

  53: AddInputFilter DEFLATE text/html text/plain text/xml text/x-js text/css application/x-javascript 

  54:  

  55: SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary 

  56:  

  57: SetEnvIfNoCase Request_URI \.(?:pdf|exe|zip)$ no-gzip dont-vary 

  58:  

  59: #SetEnvIfNoCase Request_URI \.(?:css|js)$ no-gzip dont-vary 

  60:  

  61: DeflateFilterNote Input instream 

  62:  

  63: DeflateFilterNote Output outstream 

  64:  

  65: DeflateFilterNote Ratio ratio 

  66:  

  67: LogFormat '%{outstream}n/%{instream}n (%{ratio}n%%) :- "%r"' App_small_deflate 

  68:  

  69: CustomLog "|bin/rotatelogs logs/App_small_deflate.%d.%m.%Y.log 10M" App_small_deflate 

  70:  

  71: <FilesMatch "\.(ico|jpg|jpeg|png|gif|js|css|swf)$"> 

  72:  

  73: Header set Cache-Control "public" 

  74:  

  75: Header set Expires "Thu, 31 Mar 2015 20:00:00 GMT" 

  76:  

  77: </FilesMatch> 

  78:  

  79: </VirtualHost> 

  80:  

  81: ######## APP JBoss STOP #########

2. Create folder with name mod_jk in D:\Apache2.2\conf & create following file with name workers.properties with the code mentioned below.

workers.properties

   1: #Define list of workers that will be used 

   2:  

   3: # for mapping requests 

   4:  

   5: worker.list=loadbalancer,App,status 

   6:  

   7: # Define App 

   8:  

   9: # modify the host as your host IP or DNS name. 

  10:  

  11: worker.App.port=8009 

  12:  

  13: worker.App.host=localhost 

  14:  

  15: worker.App.type=ajp13 

  16:  

  17: worker.App.lbfactor=1 

  18:  

  19: worker.App.local_worker=1 (1) 

  20:  

  21: worker.App.cachesize=100 

  22:  

  23: # # Load-balancing behaviour 

  24:  

  25: worker.loadbalancer.type=lb 

  26:  

  27: worker.loadbalancer.balance_workers=App 

  28:  

  29: worker.loadbalancer.sticky_session=1 

  30:  

  31: worker.loadbalancer.local_worker_only=1 

  32:  

  33: worker.list=loadbalancer 

  34:  

  35: # Status worker for managing load balancer 

  36:  

  37: worker.status.type=status

3. Download mod_jk2.so file from apache site & place it in D:\Apache2.2\modules.

4. Open a command Prompt, Run as administrator if required, and type commands in following sequence.

a. Change directory to Apache executable.

   1: cd Apache2.2\bin 

b. Test the syntax in configuration files

   1: httpd.exe –t

c. Stop service

   1: httpd.exe -k stop

d. Start service

   1: httpd.exe -k start

e. Make sure that there is no errors in the output of these commands

f. Refer the screenshot above for desired outputs.

5. Incase if you get any popup like given below then click “Allow access” after checking all Networks.

6. Configuration completed at this stage;

7. Try accessing your server using port 80.

8. In case of any error, please refer the apache2.2\log folder for further diagnostics.