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1 CPU vs 2 CPU
VxRail is a multi-node vSAN based cluster architecture and efficient, and the sphere scheduler will assign CPU requirements.
Are there any advantages of choosing 1 CPU VxRail Model vs. 2 CPU model?
I would appreciate it if someone gave some advantages for a 2 CPU model.
DELL-Naoyuki K
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January 11th, 2022 18:00
> does this mean that 1 CPU can have 224 Core or the system board must have 8 physical sockets for CPU?
No, for 224 cores to be implemented, it is needed to build with 8 CPUs (sockets)
As for intel processor, VxRail can support up to 2 socket per node at maximum.
It is because VxRail uses R750 or R650 server for 15G PowerEdge model.
You can see which model of PowerEdge server can have how many CPUs/Cores by referring to below doc.
Dell-EMC-PowerEdge-Rack-Servers-Quick-Reference-Guide.pdf
DELL-Naoyuki K
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January 10th, 2022 18:00
If CPU resource is not enough compared to the requirement from VMs, it may cause performance issue.
So, this is the question of sizing VxRail.
I would recommend you to contact Dell sales rep for evaluation of your current workload and CPU requirement.
If it's totally new environment and you are not sure how CPU resource is needed, or the environment will become larger dynamically, it may be difficult to assess workload.
I'm not completely sure but i suppose that VxRail CPU can be upgraded to 1 to 2 CPU for some model.
How about you to contact Dell sales reps and make sure if it is ok or not?
Then if it's OK, how about ordering 1 CPU model first and then upgraded to 2 CPU model if needed later
pdsmicro
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January 11th, 2022 06:00
Thank you for the info.
If understand correctly VxRail can up to 2 CPU sockets in the system board.
It says in the link below that CPU can scalable up to 8 sockets/224 core, does this mean that 1 CPU can have 224 Core or the system board must have 8 physical sockets for CPU?
https://www.techproviderzone.com/cloud-and-data-centers/how-intel-xeon-scalable-processors-can-help-your-data-center-customers?itc=refresh
DELL-Sam L
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January 11th, 2022 11:00
Hello pdsmicro,
Here is a link to Dell EMC VxRail System TechBook & if you look on page 31 it explains how many cores per VXrail system that you can have. https://dell.to/3ndNQVx
DELL-Naoyuki K
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January 11th, 2022 19:00
The doc says that G series model can support up to 224 cores, however this is not per node, but per chassis.
G series model chassis can have 4 node per chassis and each node in it can have 2 socket at maximum.
So in total, it can have 8 sockets per chassis, this is why G series can have up to 224 cores.
One important thing to tell, G series model is not available latest 15G VxRail model any more.