What’s the optimum amount of memory on a Quad core xenon 3.4 ghz machine?

56,495 pts.
Tags:
64-bit Servers
Memory management
quad-core processor
SQL Server
Should we load up a 64-bit OS for this machine? It will be SQL Server only. We want to have the best user experience so any help would be greatly appreciated.
ASKED: July 21, 2010  7:37 PM
UPDATED: July 21, 2010  8:34 PM

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This varies greatly depending on concurrent connections, transactional activity, etc. As always the more memory you can supply the better. I would go with Windows 2008 x64 with 16GB of memory and appropriately partition your drives accordingly:

In Server
2 Mirrored Drives – C: – Operating System Only
2 Mirrored Drives – D = Pagefile
2 Mirrored Drives – E = Applications
SAN (iSCSI/Fibre) with redudant paths
Expandible Drives – F = Database Files Only
Expandable Drives G = Log Files Only
Expandable Drives H = Dump SQL backup

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