Product : Datrium, DVX [HCI]/5.0.1.0, x86
Feature : Protection Capacity Overhead, Reads/Writes, Data Availability
Content Owner:  Herman Rutten
Summary
Erasure Coding (N+2): 25%
Details
Compute Nodes perform full network stripe writes to a set of Data Nodes with each Data Node maintaining its own local drives. Datrium DVX uses a wide erasure-coded stripe of (8D+2P) to increase write throughput and to lower the extra space overhead for encoding. Layout maps are maintained to map stripes to Data Nodes and disks. DVX uses declustered RAID layouts: data, parity and spare space are spread out across all disks of Data Nodes.