How to use local storage for CloudStack VMs

When CloudStack is deploying a VM (including guest VMs and system VMs), by default, the VM is set to use NFS-mounted primary storage as their root partition. The NFS-mounted primary storage is shared among all compute nodes located in the same CloudStack cluster. One of the reasons for using shared primary storage is VM migration. It is easy to migrate a VM from one compute node to another if the VM is backed by the same shared primary storage. If you don't need to migrate VMs, and compute nodes have plenty of local storage, you can configure CloudStack such that deployed VMs use compute node's local storage.Read more »

How to log in to system VMs in CloudStack

In CloudStack, there are two system VMs (Console Proxy VM and Secondary Storage VM) that are automatically created by CloudStack for each zone. Console Proxy VM (CPVM) provides console access to tenant's guest VMs, while Secondary Storage VM (SSVM) downloads and maintains VM templates used by tenants. While setting up CloudStack, you may experience problems with either of the system VMs.Read more »