Immutability - User Guide for VMware vSphere
helpcenter.veeam.com › docs › backupOct 01, 2021 · Veeam Backup & Replication allows you to prohibit deletion of data from the extents of the scale-out backup repository by making that data temporarily immutable. It is done for increased security: immutability protects your data from loss as a result of attacks, malware activity or any other injurious actions.