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AZ-802 · Storage and file services · Storage and file services | Configure Windows Server storage · Storage and file services | Configure and manage Windows Server file shares

Practice question 490 of 506 · hard

Two sites need a disaster-recovery copy of a supported data volume, including writes inside open files. Tests show the WAN cannot meet the documented synchronous-replication latency requirement, and the business accepts some data loss after a site failure. Which technology and mode best match?

Choose the single best answer.

  1. A.Synchronous Storage Replica despite the failed latency requirement, with a promise of unchanged application write latency
  2. B.DFS Replication as a block-level replica of every write inside files that remain open
  3. C.Asynchronous Storage Replica in a supported topology, with monitored replication lag and a tested recovery plan
  4. D.A DFS namespace referral alone, with the assumption that a second target already contains synchronized volume blocks
Show the answer and explanation

✓ Correct answer

  • Asynchronous Storage Replica in a supported topology, with monitored replication lag and a tested recovery plan

Storage Replica replicates volume blocks and its asynchronous mode is appropriate when the supported synchronous latency requirement cannot be met and the RPO permits lag. Synchronous mode would affect the write path. DFSR is file replication with open-file limitations; namespace referrals do not replicate data.

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