Posts tagged ‘DDR3’

Intel Nehalem EX & DDR3 Speeds

Written February 19th, 2010 by
Categories: Server Hardware
No Comments »

We all hate that adding DDR3 sticks to a server slows down the QPI speed (or RAM Bus for lack of a better example).

That changes with the Nehalem EX proc (and perhaps Westmere), as the CPU governs the speed. You can throw up to 16 sticks of DDR3 RAM per CPU at either 800, 978, or 1066MHz, and the governing factor is the CPU: Read the rest of this entry »

vSphere Maximum Configuration – VMs per host limitations on Update 1

Written February 18th, 2010 by
Categories: Virtualization
1 Comment »

When planning a new virtualization environment, consolidation numbers are always flying around, and specifically the number of VMs you can run on a host.

According to This Doc you can have a max of 320 VMs per host, but keep in mind the number’s different for HA clusters. I was also pleased to find out the numbers were slightly changed for Update 1. Read the rest of this entry »

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