Technology Preview: Erasure coding in Veritas InfoScale storage environments

(Linux only)

Erasure coding is a new feature available as a technology preview in Veritas InfoScale for configuration and testing in non-production environments. It is supported in DAS, SAN, FSS, and standalone environments.

Erasure coding offers a robust solution in redundancy and fault tolerance for critical storage archives. In erasure coding, data is broken into fragments, expanded and encoded with redundant data pieces and stored across different locations or storage media. When one or more disks fail, the data on failed disks is reconstructed using the parity information in the encoded disks and data in the surviving disks.

Erasure coding can be used to provide fault tolerance against disk failures in single node (DAS/SAN) or shared cluster (SAN) setups where all nodes share the same storage. In such environments, erasure coded volumes are configured across a set of independent disks.

In FSS distributed environments, where the storage is directly attached to each node, erasure coded volumes provide fault tolerance against node failures. You can create erasure coded volumes using storage from different nodes such that encoded data fragments are stored on different nodes for redundancy.

For more information see the InfoScale storage administration guides.