ERASURE CODING:
Erasure coding is a technique used by Ceph to protect data against drive failures. Instead of storing data redundantly on multiple drives (like RAID), erasure coding breaks data into smaller chunks and spreads them across multiple drives. This allows for faster data recovery in case of drive failures.
Analogy: Like having multiple copies of a document stored in different locations, erasure coding allows for data recovery even if some parts of the document are lost.
Why It Matters: It provides better data protection than traditional RAID methods and is more efficient in terms of storage space utilization.