Table of Contents
Question
Which describes the Dell Unity XT MetroSync replication topology?
A. A source block resource replicating synchronously from Site A to Site B and replicating synchronously from Site A to Site C
B. A source file resource replicating synchronously from Site A to Site B and replicating asynchronously from Site A to Site C
C. A source file resource replicating synchronously from Site A to Site B and replicating synchronously from Site A to Site C
D. A source block resource replicating synchronously from Site A to Site B and replicating asynchronously from Site A to Site C
Answer
C. A source file resource replicating synchronously from Site A to Site B and replicating synchronously from Site A to Site C
Explanation
The correct description of the Dell Unity XT MetroSync replication topology is:
C. A source file resource replicating synchronously from Site A to Site B and replicating synchronously from Site A to Site C.
1. Dell Unity XT MetroSync replication:
- Dell Unity XT MetroSync is a replication feature that provides synchronous replication for file resources between multiple sites.
- It ensures that data changes made at the source site are replicated to the target site(s) synchronously, ensuring data consistency and minimal data loss.
2. Replication topology:
- In the given description, the source resource is a file resource.
- The replication is synchronous from Site A to both Site B and Site C, indicating that changes made at Site A are immediately replicated to both target sites.
- This ensures that the data at Site B and Site C is up-to-date and consistent with the source site.
3. Synchronous replication:
- Synchronous replication means that the replication process waits for the acknowledgment of each write operation from the target site before proceeding with the next operation.
- This ensures that the data remains consistent between the source and target sites, but it may introduce some latency due to the synchronous nature of the replication.
Based on the given options, the correct description of the Dell Unity XT MetroSync replication topology is that a source file resource replicates synchronously from Site A to Site B and replicates synchronously from Site A to Site C.
Reference
- delltechnologies.com/asset/en-us/products/storage/industry-market/h17216-dell_emc_unity-metrosync.pdf
- Dell Unity: Replication Technologies (delltechnologies.com)
- Dell Unity™ Family Configuring Replication | Dell Malaysia
- Dell Unity: MetroSync (delltechnologies.com)
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