What happens to the I/O operations while you take a database snapshot?
A.
I/O operations to the database are suspended for a few minutes while the backup is in progress.
B.
I/O operations to the database are sent to a Replica (if available) for a few minutes while the backup is in
progress.
C.
I/O operations will be functioning normally
D.
I/O operations to the database are suspended for an hour while the backup is in progress
A
Duplicate question.
A is only partially right as AWS indicates it is a few seconds. C is close to being right…
http://www.aiotestking.com/amazon/what-happens-to-the-io-operations-while-you-take-a-database-snapshot/
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I would choose C
A is only partially right, probably you wouldn’t notice a few seconds…
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B
Actually not duplicate. the answers in the last was in seconds which was more correct. Last time it also didn’t specify if a replica was available.
http://jayendrapatil.com/aws-rds-db-snapshot-backup-restore/
https://acloud.guru/forums/aws-certified-solutions-architect-associate/discussion/-KSrQgKeGE3NY9SeZ5Ed/quiz_i~2Fo_suspension_while_taki
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Opps! Answer is A.
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https://aws.amazon.com/rds/faqs/
Q: How do DB Snapshots and automated backups work with my Multi-AZ deployment?
You interact with automated backup and DB Snapshot functionality in the same way whether you are running a standard deployment in a Single-AZ or Multi-AZ deployment. If you are running a Multi-AZ deployment, automated backups and DB Snapshots are simply taken from the standby to avoid I/O suspension on the primary. Please note that you may experience increased I/O latency (typically lasting a few minutes) during backups for both Single-AZ and Multi-AZ deployments.
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