adding Second processor to HP ML370 G4 with windows server SBS 2003

Thanks for your help in advance.

I have a 379911-421 - HP ProLiant ML370 G4 Intel® Xeon® Processor 3.40 GHz installed with windows SBS 2003.

The server currently only has 1 processor installed but has enough slots for 2. We have another identical (unused) server. We would like to remove this and install it in the second processor slot of the other server. So we have 2 processors installed.

I would like to know if this is a simple as shutting down the processor and transferring the CPU? will the OS accept the new software without any reinstallation etc?
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Muhammad BurhanManager I.T.Commented:
after inserting 2nd CPU OS will definitely ask for reboot because of the driver, rest of the things will automatically adjust by OS.
Dirk MareSystems Engineer (Acting IT Manager)Commented:
Yes it is as simple as switching off and installing the 2nd CPU. Please read this article

Windows Small Business Server 2003 supports a maximum of two physical processors, even if the processors are multicore or hyper-threaded.

For example, if you use two dual-core processors, each physical processor contains two cores. Therefore, four virtual processors are available. Windows Small Business Server 2003 will recognize and support all four virtual processors.

Similarly, if you use two dual-core, hyper-threaded processors, eight virtual processors are available. Windows Small Business Server 2003 will recognize and support all eight virtual processors.

sfabsAuthor Commented:
Thank you for the information. will be installing tomorrow evening and then close with points.
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David Johnson, CD, MVPOwnerCommented:
you will also have to add RAM to the machine as the memory slots are allocated per cpu normally.
andyalderSaggar maker's framemakerCommented:
You have to add the PPM from the old server as well as CPU and heatsink, it's a little board sticking up near the CPUs - put it in the empty socket to provide power to CPU2. To remove the CPU there's a lever to release the ZIF socket, you have to release that before pulling the heatsink up. CPU is attached firmly to heatsink so no need to re-apply thermal paste.

If the server only has 3 fans in it I would transfer them too into the redundant fan slots.

You can certainly transfer RAM as well but this machine has a northbridge so RAM is not associated with an individual CPU. Whether your SBS can use it depends on how much you have already since it's limited to 4GB.

I'm not at all sure that 2003 server automatically changes HAL from single processor to dual but it's not that hard to do that manually, there was only one model with dual-core CPU, most just had single core so single processor HAL probably in use currently.

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Cris HannaSr IT Support EngineerCommented:
Here is the article from Microsoft on adding a second CPU

I also think it important to remind that all support for this product ended on July 14th this year.   Server 2003 is limited to 4GB of RAM.  If your server is running slow...adding the second CPU is not likely going to provide any improvement.   Adding more RAM would but again, you can't unless you have less than 4GB now.

As there have been no patches for SBS 2003 since July, potentially the server now has vulnerabilities which will never be remediated.  

If Performance is the issue, migrating to newer class of hardware, and operating system, that allows for more RAM and is fully supported is the way to solve this.
Larry Struckmeyer MVPCommented:
Adding that I have never seen a SBS that was starved for CPU cycles.  More likely RAM or disk I/O.  You can check with task manager.
sfabsAuthor Commented:
Thanks for the information. This was the most accurate solution posted and reminded me to transfer the PPM which I would have forgotten and this would have caused the server not to boot.

 server was already using a XEON with 2 cores so I knew the multicore HAL was already installed. I checked using performance monitor to check the server can see 4 cores (from the 2 processors) and it did.
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Windows Server 2003

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