Following ingest, if an ILM rule includes instructions to make erasure coded copies of object data, the applicable erasure coding scheme breaks object data into data and parity fragments and distributes these fragments across the configured storage pool's Storage Nodes.
The ILM engine, which is a component of the LDR, controls erasure coding and ensures that the Erasure Coding profile is applied to object data.
The table shows the primary attributes used to track an erasure coded object:
Component | Attribute changes |
---|---|
Evaluations: The total number of ILM evaluations that have been performed to date increases by one. | |
Object Data: The size of erasure coded fragments stored on the object store increases by an amount roughly equivalent to the object's size plus the erasure coding overhead. |