SG0-001 · Question #127
Which of the following data replication technologies should an administrator use between two storage arrays 1000 miles apart?
The correct answer is C. Asynchronous. For data replication between storage arrays separated by long distances, such as 1000 miles, asynchronous replication is the most suitable technology to overcome high latency.
Question
Which of the following data replication technologies should an administrator use between two storage arrays 1000 miles apart?
Options
- ACloning
- BSnapshots
- CAsynchronous
- DSynchronous
How the community answered
(28 responses)- A14% (4)
- B7% (2)
- C75% (21)
- D4% (1)
Why each option
For data replication between storage arrays separated by long distances, such as 1000 miles, asynchronous replication is the most suitable technology to overcome high latency.
Cloning creates a copy of data at a specific point in time, typically for local use or creating new volumes, and is not a continuous replication technology between arrays.
Snapshots create point-in-time images of data for recovery purposes, but they are not a continuous data replication method between two separate storage arrays for disaster recovery.
Asynchronous replication writes data to the primary storage and then acknowledges the write to the host, replicating the data to the secondary site later. This method tolerates high latency over long distances because it does not require immediate acknowledgment from the secondary site, making it ideal for geographically dispersed data centers.
Synchronous replication requires data to be written and acknowledged by both the primary and secondary storage sites before the host write is considered complete, making it impractical over long distances due to latency sensitivity.
Concept tested: Storage replication types for distance
Source: https://learn.microsoft.com/en-us/windows-server/storage/storage-replica/storage-replica-overview
Topics
Community Discussion
No community discussion yet for this question.