A recently configured cluster is leveraging NearSync with a recovery schedule of 15 minutes. It is noticed that the cluster is consistently transitioning in and out of NearSync. What action should be taken to potentially address this issue?
A.
Change the NearSync schedule to 30 minutes.
B.
Increase network bandwidth.
C.
Configure a secondary schedule in the same Protection Domain.
Seems like the only valid option:
https://portal.nutanix.com/page/documents/details?targetId=Disaster-Recovery-DRaaS-Guide-vpc_2023_3:ecd-ecdr-procedure-nearsync-protectionpolicy-pc-c.html
The correct answer is A. Change the NearSync schedule to 30 minutes.
Explanation:
NearSync with a very aggressive schedule (like 15 minutes) may cause the cluster to struggle with maintaining synchronization, especially if there are significant data changes. By extending the NearSync schedule to 30 minutes, the cluster will have more time to complete each sync cycle before starting the next one, reducing the likelihood of falling behind and transitioning in and out of NearSync frequently.
Other options:
Increasing network bandwidth (Option B) could help if bandwidth is the issue, but it’s not the primary solution here.
Configuring a secondary schedule in the same Protection Domain (Option C) is unrelated to NearSync’s schedule stability.
Adding vCPUs to the user VMs (Option D) doesn’t address the NearSync timing issue.
From the course guide:
It is also possible for replication to automatically, and repeatedly transition into and out of
NearSync. This could be because:
• LWS (LightWeight Snapshot) store usage may be high.
• Change rate of data may be high for the available bandwidth between the primary and the
remote sites.
• Internal processing of LWS may take more time because the system may be overloaded.
Only option here is network bandwidth
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