System Requirements
There are three kits that can be used to install the virtual appliance:
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An OVA which runs on VMware ESXi 5.5 or later
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A KVM kit which runs on a KVM hypervisor running on CentOS 7.x or Red Hat (RHEL)
These kits are effectively identical, and in this guide, when the OVA is discussed, the discussion applies to all three kits unless otherwise noted.
Each of these kits were created to require limited resources: 1 virtual CPU, 8 GB main memory, 6 GB swap partition, and a 7.5 GB system partition with 5.4 GB available (free). The total disk storage required is 14 GB. You will almost certainly want to increase the size of the system disk, and giving the virtual appliance additional virtual CPU's can increase the performance considerably. You should ensure that sufficient resources are available on the host that you are targeting for the deployment to meet these requirements.
You must increase the resources used by the virtual appliance or it will not function successfully. There are two different regimes: running a local cluster, or running a regional cluster and local cluster on the same machine. The recommendations below are for running the virtual appliance(s) on a Jumpstart, but these are also useful starting points for any local or regional cluster deployment. For a local cluster:
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CPU: 1 socket, 8 CPUs
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Memory: 12 GB
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Disk: 100 GB or greater
For a regional cluster running on the same Jumpstart as a local cluster:
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CPU: 1 socket, 7 CPUs
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Memory: Minimum 8 GB
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Disk: 35 GB
You may need substantially more disk space than listed above based on the size of your deployment. You can increase the disk space by resizing the allocated disk and rebooting the appliance.