Hard-Link Backup on AWS RAID-0
The way you perform a hard-link backup on AWS differs from doing a hard-link backup procedure on traditional bare metal Vertica installations. The use of a software RAID-0 device requires a different approach for AWS. Very small timing differences occur when taking the snapshot of the EBS volumes that make up RAID-0 devices. These timing differences can cause inconsistencies that make the backup invalid.
You can choose between two options for performing a hard-link backup:
- Stop the cluster with admintools.
- Freeze the cluster with the
fsfreeze
command.