Hardware Requirement with Network & Storage

bhupendrakumar

New Member
Feb 12, 2020
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Hi Team,
pls share 100 VMs hardware requirements with 3 nodes setup with Network & Ceph storage.

Thanks
Bhupendra
 
The requirements for Ceph are described in our documentation [0]. Proxmox VE itself needs about 1GB of RAM.

How much computing power and memory you need for your VMs is something you need to know.

One important hint: use a dedicated physical network for the PVE cluster communication (corosync). A 1Gbit connection is more than fast enough. Corosync does not neet a lot of bandwidth but really needs low latency. Once you put it on the same physical interface with other services, especially services that can be very network intense like Ceph, you will easily run into a situation where the network gets congested and the PVE cluster falls apart. With HA enabled you can have all your cluster nodes reset because they lost quorum.

You can configure more corosync links as a fallback for corosync to switch to should the primary dedicated network fail for some reason (e.g. tripping over a cable, replacing a cable,...)


[0] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#_precondition
 

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