Identify FEC Data Protection Levels, File Striping, and Reed-Solomon Protection Definitions POWERSCALE-DEPLOY Practice Questions (Page 4)

Questions 16–20

1. 16foundation · medium

   How does Reed-Solomon protection differ from simple replication in PowerScale?

   • AReed-Solomon requires all data to be stored on a single node.
   • BReed-Solomon provides faster read performance than replication.
   • CReed-Solomon only protects against drive failures, not node failures.
   • DReed-Solomon uses less storage overhead for the same level of fault tolerance.
   Reveal Solution Discussion Select an answer first
2. 17expert · hard

   A PowerScale cluster is configured with +1d:1n protection. The administrator wants to change the protection level to +2d:1n. What is the primary consideration before making this change?

   • AThe cluster must have enough spare capacity to store the additional parity data.
   • BThe protection level change is automatic and requires no planning.
   • CThe number of nodes must be increased to support the higher protection level.
   • DThe cluster must be taken offline to change the protection level.
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A PowerScale cluster is configured with +2d:1n protection. A file is written to the cluster. How does file striping interact with the protection level to ensure data safety?

   • AThe file is split into chunks, and each chunk is stored on a separate node without any additional parity data.
   • BThe file is striped into blocks, and parity blocks are generated and distributed across the cluster according to the protection level.
   • CThe file is stored as a single block on one drive, and the protection level duplicates it to other drives.
   • DThe file is compressed to reduce its size, and the protection level adds checksums to each block.
   Reveal Solution Discussion Select an answer first
5. 19foundation · medium

   What is the role of Reed-Solomon error correction in PowerScale?

   • AIt generates parity blocks that allow reconstruction of data after failures.
   • BIt compresses data to reduce storage usage.
   • CIt encrypts data to protect it from unauthorized access.
   • DIt duplicates data across multiple nodes for redundancy.
   Reveal Solution Discussion Select an answer first
6. 20expert · hard

   A PowerScale cluster is configured with +2d:1n protection. Two drives in different nodes fail simultaneously. The administrator is concerned about data loss. What is the outcome?

   • AData is reconstructed using parity blocks, and the cluster remains operational.
   • BThe cluster automatically fails over to a secondary cluster.
   • CData is lost because the protection level only covers failures in the same node.
   • DThe cluster enters read-only mode until one of the drives is replaced.
   Reveal Solution Discussion Select an answer first