Minimum requirements Catalyst Center VM

[MarcoRuffini5696]

Hello,

I would like to know if it's possibile to lower the requierement of the DNA Center, 256g ram & 32VCPU are huge for medium size company. 80 AP and 150 Switch.

Thank you

[bigevilbeard · Accepted solution]

This was chatted about in the study group there is a video here https://www.youtube.com/watch?v=LFg7MwD_FN8 might give some clues on how you could scale this down some. However as this is prod i would very careful doing this, if this was for a lab like in the video you assigned the required CPU and RAM and once installed you can reduces to some if you like to save some CPU and RAM.

Hope this helps.

[Torbjørn]

I have experimented quite a lot with running the Cat-C VA with too few resources for lab purposes. The short answer is no. 

The longer answer is that you are not really able to oversubscribe much in recent releases of Cat-C. You must give it the correct number of vCPU and memory during install and you might be able to get away with reducing the reservations a little afterwards as @bigevilbeard said, but this is unstable at best. If this is for lab purposes you can try to run the 2.3.7.0 VA as this seems to handle a lack of resources better than the later releases. If this is for production I would strongly advise against making changes to the resources available to the VM.

[balaji.bandi]

We are hoping Cisco produce a lightweight version of DNAC, i was heard, but they might have released it in Cisco live (I have not read it)

for now, that is the requirement, it requires lot of compute to process (back side Kubernetes)