Cluster solutions guarantee high availability and allow for uninterrupted IT services, also if single servers have to be shut down for maintenance.
Normally server and storage cluster are separated, which makes maintenance more complex. Not so with hyper-converged appliances.
With the Nutanix software installed on them, also data can be held redundant, thanks to its special NDFS filesystem. Thus, a scale-out cluster can be implemented over a practically unlimited number of nodes, which keep data as well as VMs redundant. This cluster is not managed by one central master node, but each VM has one defined master, whose data and processes are mirrored to a second node. So, the load is distributed and performance will be increased by every additional node.
In order to achieve maximum data throughput, SSDs are used as tier 1 storage. Up to 22 Nearline or SAS disks serving as tier 2 offer high capacity on every single node.
The minimum configuration for a Nutanix scale-out cluster consists of three nodes, handling up to 200 VMs. The cluster can be extended to several hundreds of nodes – for thousands of virtual machines.