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What can be the maximum RAM allocated to VM ?

asked 2013-06-21 08:22:40 -0600

daniel.coquette gravatar image

updated 2013-06-30 22:43:02 -0600

fifieldt gravatar image

Vmware claim that they can give 128 gigabytes of RAM for a VM, can Openstack do the same or even more ?

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answered 2013-06-21 09:45:16 -0600

sgordon gravatar image

updated 2013-06-21 09:48:53 -0600

The answer is hypervisor dependent, for instance if you use VMware hypervisors in your OpenStack environment then their theoretical maximums apply but would be different to if you used Hyper-V or KVM. The types of hypervisors currently supported in OpenStack environments are listed here:

https://wiki.openstack.org/wiki/HypervisorSupportMatrix

As an example the current theoretical maximum memory limit for KVM guests is 2 TB (from the RHEL 6 KVM column):

http://www.redhat.com/resourcelibrary/articles/virtualization-limits-rhel-hypervisors

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Asked: 2013-06-21 08:22:40 -0600

Seen: 1,848 times

Last updated: Jun 21 '13