Lightbits Data Protection

The Lightbits storage solution supports Erasure Coding (EC) for protection against SSD failure within the storage server. As shown in the figure below, this flexible self-healing feature prevents IO interruption in the case of SSD failure. Normal operation continues during reconstruction when a drive is removed.

Lightbits Open Storage Platform Self-Healing Data Protection Rebuild Process

The system stays in normal operation even if the drive is never returned. Replacing a missing drive does not trigger any new operations; the capacity of the storage server is simply re-expanded. The rebuild processes starts automatically following the failure or removal of an SSD. Erasure coding is enabled on a per-node basis in the hardware profile that was selected for a given customer installation. The Lightbits Installation Guide has information for enabling EC; see the ec_enabled variable description in Host Server Configuration server Defining Configuration Files for Each “Ansible Host” (Server) in the Cluster.