4GB of memory for vCenter

[josulazkano]

Hello,

I have a 2 hosts cluster with a vCenter Aplliance. By default it take 8GB of memory for the appliance. I have 16 + 8 GB in total, so could I configure with 4GB of memory the appliance?

Could I have any problem?

Thanks and regards.

[rcporto]

This is a lab or production environment ? Which version of vCSA you're running ?

[josulazkano]

Hello, this is a production system with 6.0.0 version of hosts and vCenter.

Regards.

[rcporto · Accepted solution]

Depending of the size of your environment you could get serious problems since the minimum supported memory size is 8GB, see: vCenter Server Appliance Hardware Requirements

And another possible problem is that if you get problem, VMware may deny support your vCenter if this do not comply with minimum hardware requirements,

[josulazkano]

OK, thanks for the reply.

But I want to know any experience in little vmware systems.

Thanks and regards.

[vHaridas]

For production vCenter its not recommended to reduce RAM size than what is VMware has suggested.

However in LAB you can play around and reduce RAM to 4 GB for vcsa 5.x and around 5 GB to vcsa 6.x

if you change the memory you also need to modify the java heap size accordingly.

See this for more information -

Quick Tip – Minimum amount of memory to run the vCenter Server Appliance | virtuallyGhetto