Oracle ASM reduces the administrative overhead for managing database storage by consolidating data storage into a small number of disk groups.
The smaller number of disk groups consolidates the storage for multiple databases and provides for improved I/O performance.
I eventually had to revert to my last Veeam backup because that was more recent that going back in time to the day the snapshot was made.
When you add or remove disks from a disk group, Oracle ASM automatically redistributes the file contents and eliminates the need for downtime when redistributing the content.
For information about administering disk groups, see Chapter 4, "Administering Oracle ASM Disk Groups".
Within a disk group, Oracle ASM exposes a file system interface for Oracle database files.
The content of files that are stored in a disk group is evenly distributed to eliminate hot spots and to provide uniform performance across the disks.
Committing a snapshot on a VM fails and you can’t get your VM to boot again because there are disks missing.