Backup from storage snapshot is a feature of Veeam Backup & Replication that leverages the native snapshot capabilities of the storage system to create a consistent point-in-time copy of the VM data. Veeam Backup & Replication then reads data directly from the storage snapshot, bypassing the ESXi host and reducing the impact on the production environment1. Backup from storage snapshot is supported for VSAN datastores on NetApp, Nimble, Dell EMC, HPE, and Pure Storage systems2.
Using backup from storage snapshot for the virtualized stock trading application servers can improve the backup performance and reduce the latency, as it minimizes the time that the VM is running on a snapshot and avoids the network overhead of other transport modes3.
The other options are not recommended because:
* B) Implementing Veeam Agent on the virtualized stock trading application servers is not necessary, as Veeam Backup & Replication can protect VMware VMs without agents. Veeam Agent is mainly used for physical servers, workstations, or cloud instances4.
* C) Using Veeam Replication to create replicas of the virtualized stock trading application servers at the remote site, then back up the replicas is not optimal, as it adds more complexity and cost to the backup process. Veeam Replication is mainly used for disaster recovery purposes, not for backup5.
* D) Turning off application-aware processing for the virtualized stock trading application servers is not advisable, as it may compromise the consistency and recoverability of the application data.
Application-aware processing is a feature of Veeam Backup & Replication that ensures that the application data is in a consistent state before the backup or replication job starts.
You can find more information about backup from storage snapshot and other backup options for VSAN in the following resources:
* Backup from Storage Snapshots
* Storage Systems Supported for Backup from Storage Snapshots
* Optimizing Veeam Backup & Replication Configuration for VMware VSAN
* Veeam Agent Management
* Veeam Replication
* [Application-Aware Processing]