Topic 1 Question 234
You are migrating a business critical application from your local data center into Google Cloud. As part of your high-availability strategy, you want to ensure that any data used by the application will be immediately available if a zonal failure occurs. What should you do?
Store the application data on a zonal persistent disk. Create a snapshot schedule for the disk. If an outage occurs, create a new disk from the most recent snapshot and attach it to a new VM in another zone.
Store the application data on a zonal persistent disk. If an outage occurs, create an instance in another zone with this disk attached.
Store the application data on a regional persistent disk. Create a snapshot schedule for the disk. If an outage occurs, create a new disk from the most recent snapshot and attach it to a new VM in another zone.
Store the application data on a regional persistent disk. If an outage occurs, create an instance in another zone with this disk attached.
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Answer is D. When your are using regional persistent disks, the data is automatically replicated to two replicas without the requirement of maintaining application replication. There is no need to use a snapshot.
👍 5carlalap2023/11/11- 正解だと思う選択肢: D
The benefit of regional persistent disks is that in the event of a zonal outage, where your virtual machine (VM) instance might become unavailable, you can usually force attach a regional persistent disk to a VM instance in a secondary zone in the same region.
👍 3_cloudio_2023/08/14 - 正解だと思う選択肢: D
D, C doesn't make sense because article explicitly says that: 'During the failover, the regional persistent disk that is synchronously replicated to the secondary zone is force attached to the standby VM by the application control plane, and all traffic is directed to that VM based on health check signals.' https://cloud.google.com/compute/docs/disks/high-availability-regional-persistent-disk#failover
👍 3gfalconia2023/08/16
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