Do I need more RAM

I have a Windows 2003 Server Enterprise Edition server that runs a lot of applications related to Computer Assisted Dispatching (CAD). The CAD application uses databases created in SQL Server 2000. When the server is backed up using Netbackup the CAD application times out. I was wondering if this could be because there is not enough memory. I looked on the task manager under performance and the Physical Memory is as follows:

Total 18,872,492
Available 4,238,264
System Cache 4,367,248

I am not sure how to interpret these numbers, please advise
Kimberly1467Asked:
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nasserdCommented:
More or speedier RAM has never been known to negatively impact the performance of a Windows Server... and, relatively speaking, they are very cheap nowadays.
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KavostylinCommented:
Hi There.

The problem seems to be that you have 18GB of total available memory. Yet only running a 32bit Operating system for your server therefore will not be able to utilise the large amount of memory you have installed.

KAVO
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PCBONEZCommented:
Ahhh....
1 - Windows 2003 Server Enterprise Edition [32-bit] allows PAE which extends memory up to 32GB.
2 - Windows 2003 Server Enterprise Edition come in a 64-bit version which can support up to 1TB RAM.
.

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KavostylinCommented:
You know i totally forgot about PAE.

Have never had to use it as all my servers are 03 64bit.

Hav a look at this MSKB regarding enabling PAE on your server.

http://support.microsoft.com/kb/283037
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