The Development Team is planning to use Amazon FSx for Windows File Server for storing windows-based application data. This critical application needs to be highly available. The Operations Lead is concerned about the availability of the data store within Amazon FSx servers.
Which is the correct statement for high availability for Amazon FSx?

Answer options:

A.Active and Standby Servers for Amazon FSx are placed in a single AZ, with synchronous replication between active and standby servers.
B.Active and Standby Servers for Amazon FSx are placed in different AZ, with synchronous replication between active and standby servers.
C.Active and Standby Servers for Amazon FSx are placed in single AZ, with asynchronous replication between active and standby servers.
D.Active and Standby Servers for Amazon FSx are placed in different AZ, with asynchronous replication between active and standby servers.

Correct Answer: B
With Multi-AZ deployment, active and standby servers are placed in separate AZ. Data written to an active server is synchronously replicated to standby servers. With Synchronous replication, data is written to active and standby servers simultaneously, while with asynchronous replication, there might be a lag between data written to active servers and standby servers. Synchronous Replication is advantageous during failover where standby servers are in sync with active servers.
Option A is incorrect as with Multi-AZ deployment, active and standby servers must be placed in Multi-AZ, not in a single AZ.
Option C is incorrect as with Multi-AZ deployment, active and standby servers must be placed in Multi-AZ, not in a single AZ.
Option D is incorrect as with Multi-AZ deployment, replication between active and standby servers must be synchronous and not asynchronous.
For more information on high availability for Amazon FSx, refer to the following URL,
https://aws.amazon.com/fsx/windows/features/?nc=sn&loc=2