nutanix erasure coding requires how many nodes
But because some customers require the ability to support multiple concurrent node failures without the chance of data loss or unavailability, RF3 has been required. Enter Nutanix Erasure Coding (EC-X)! Now lets say you have a 32 node cluster where each node has 10TB RAW. With RF3 we would have approx 3.33TB usable per node for a total of 106.56TB in the cluster. With EC-X enabled (assuming EC-X has been applied to all data) the usable capacity would DOUBLE to 6.66TB per node and 213.12TB for the cluster. Hereâs how it works. For RF3, the Nutanix Distributed Storage Fabric writes and maintains three copies of each piece of data.
Figure 3 Trade-off #2: Erasure coding is only really applicable in larger clusters It is clear that when we use an erasure code scheme like 10+6, we need at least 16 nodes to distribute all the segments making up the erasure set.