Backup vs. Back Up, Failover vs. Fail Over, Failback vs. Fail Back
Backup is a noun spelled as a single word, while back up is a verb spelled as 2 words. Failover is a noun spelled as a single word, while fail over is a verb spelled as 2 words. Failback is a noun spelled as a single word, while fail back is a verb spelled as 2 words.
- Veeam Backup & Replication does not necessarily use a backup created by one job and one backup repository as a source of data. It can copy data from backups created by different jobs and even from different backup repositories.
- If you do not want to back up or replicate some files and folders on the VM guest OS, you can exclude them from the backup or replica.
- Failover is a process of switching from the original VM on the source host to its VM replica on the target host.
- If a VM becomes unavailable in case of a disaster, you can fail over to the VM replica and quickly restore services in the production environment.
- If you want to resume operation of a production VM, you can fail back to it from a VM replica. When you perform failback, you get back from the VM replica to the original VM, shift your I/O and processes from the target host to the production host and return to the normal operation mode.
- If you fail back from a VM replica to the VM in the original location, you can instruct Veeam Backup & Replication to perform quick rollback.
- You can power off running VM replicas on target hosts and roll back to the initial state of these replicas.
- To upload backed-up data to Amazon EC2, Veeam Backup & Replication uses an auxiliary EC2 instance — a proxy appliance.
- For every disk of a backed-up machine, Veeam Backup & Replication creates an empty EBS volume in Amazon EC2.