Windows Server, SQL ,Exchange Licensing

We are setting up a medium sized company with the following servers suggested to us - Company size (~150 Users)++

Core Servers

Windows Server 2003 [x86] - File server/DHCP/Domain Controller/AD  X 150 users

Windows Server 2003 with MS Exchange 2003 Standard - Mail server - X 150 users

Application and DB servers(Central Office) :

Windows Server 2003 with MSSQL Server 2008 Enterprise(Server runs a Web App in ASP and accepts direct connections to a windwos .NEt application) - X 60 Users

Windows Server 2003 with MSSQL Server 2008 Enterprise (Server hosts a Database which supports 2 windwos based applications) - X 10 users

Windows Server 2003 with MSSQL Server 2005 Standard (Server hosts the database which supports 1 Windows .NEt app) - X 30 Users

Remote Location

Windows Server 2008 Standard with MSSQL 2008 Standard (Replicates one of the above servers to a remtoe location) X 20 users

Windows Server 2003 with Exchange 2003 Standard (replicates Exchange from central location)

this is the idea for a new network setup can you please explain to me how MS licensing works?
I have gone thru the licensing details but im quite confused about Processor licensing , CALS etc etc...
Could somene please explain this.
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ludo_friendConnect With a Mentor Commented:

every computer needs a windows license
every computer that connects to a windows server (or is a member of a domain) needs a windows server CAL
every computer that connects to an exchange server needs an exchange CAL
every computer that connects (eventually) to a SQL server needs an SQL CAL

its usually much cheaper to buy a standard/enterprise cal suite for each computer as part of a licensing agreement with microsoft.

processor licenses mean for each *Physical CPU* (not core/HT/whatevers), you can have unlimited clients connect for one price. Usually this is just for SQL server.

ludo_friendConnect With a Mentor Commented:
every server needs a windows server license. sometimes they come with free CALs

if you have less users than computers (employees have multiple computers) you may be better off with a user cals rather than device cals.  This isn't normally the case.

at 150 machines, you are certainly better off talking to a licensing solution organisation about getting into some kind of licensing agreement.

isaackhaziAuthor Commented:
OK :

If we have a windows server 2003 running SQL Server 2008 what do we need?
cals for windows server + cals for SQl server? or just SQl server?

same for windows server running exchange 2003? do we need cals for windwos server and exchange or just exchange?

Do CALS expire?
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ludo_friendConnect With a Mentor Commented:
if the computer is contacting any windows server then it needs a windows sever cal. 1 user/device cal lets you connect to multiple servers.
so if computer 1 needs access to exchange and sql it needs
1x sql cal, 1x windows server cal, 1x exch cal

computer 2 needs access to exchange only
1x windows server cal, 1x exchange cal

computer 3 needs access to files only (domain membership&fileserver access)
1x windows server cal

ludo_friendConnect With a Mentor Commented:
Cals don't expire unless they are obtained under a licensing agreement that does expire

ludo_friendConnect With a Mentor Commented:
isaackhaziAuthor Commented:
Thnx for your replies:

We have :
domain server + file server running server 2008 OS
mail server (exchange 2003) running on server 2003 OS
sql server 2008 running on another server with server 2003 OS

now, if User 1 needs to access domain server to login and access shared files, the mail server to access his emails and the SQL server for some custom applications, does he need :

1 windows server 2008 CAL
1 windows server 2003 CAL + 1 Exchange 2003 CAL
1 Windows server 2003 CAL + 1 SQL 2008 CAL?

1 windows Server 2008r2 CAL
!!!!server cals downgrade (but not upgrade) so always get the newest. 1 cal is good for multiple servers.
+ 1 Exchange 2k3 CAL + 1 SQL 2008 CAL

obviously you still need 1x server 2008 LICENSE (not cal), 2x server 2003 License, 1x SQL 2008 and 1x Exchange 2003

isaackhaziAuthor Commented:
thanks so much for all your replies.:

One last question :

Is SQL SERVER 2008 CAL downgrade apply for SQL SERVER 2005 CAL (In the same way you described above regarding Windows Server 2003 and 2008)
ludo_friendConnect With a Mentor Commented:
just had to look that one up. yes.
isaackhaziAuthor Commented:
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