Instant Disk Recovery
With Instant Disk Recovery, you can immediately restore VM disks from a backup file and use one of the following options:
- Perform Instant Disk Recovery. Use this option to publish recovered disks to the production environment.
- Perform Instant First Class Disk (FCD) Recovery Use this option to register recovered disks as FCDs in the production environment. FCDs are a type of improved VMDK that allow to perform different tasks: create snapshots, delete and restore data stored on VMDK without attaching these disks to a VM.
Use Instant Disk Recovery if you need to:
- Recover VM disks, not an entire VM. Otherwise, use Instant Recovery.
- Recover VM disks and keep the target VM (to which you want to attach recovered disks) turned on. If the VM can be turned off, use Virtual Disks Restore.
- Convert recovered VM disks to FCDs and migrate them to your production environment.
Veeam Backup & Replication performs Instant Disk Recovery and Instant FCD Recovery using vPower technology.
The main steps of Instant Disk Recovery are the following:
- Veeam Backup & Replication checks whether the vPower NFS datastore is mounted to the ESXi host and contains VMDK files of the recovered disks.
- [If you replace an existing disk] Veeam Backup & Replication unmounts and deletes the existing disk.
- The recovered disks are connected to the target VM.
- Veeam Backup & Replication initiates a creation of a protective snapshot for the target VM. If Instant Disk Recovery process fails, the protective snapshot guarantees no data loss.
- Veeam Backup & Replication writes changes made to the recovered disks to redo logs on the vPower NFS server.
The main steps of Instant FCD Recovery are the following:
- Veeam Backup & Replication initiates a restore session.
- Veeam Backup & Replication connects to a target VMware cluster and mounts vPower NFS datastore to all ESXi hosts added to the target VMware cluster.
- Veeam Backup & Replication mounts recovered disks and publishes them to the target vPower NFS datastore.
- Veeam Backup & Replication registers published disks as FCDs to the target vPower NFS datastore.
- Veeam Backup & Replication initiates a creation of a protective snapshot for every FCD. If the Instant FCD Recovery process fails, the protective snapshot guarantees no data loss.
- The recovered disks are unmounted from the vPower NFS datastore.
Mind the following:
Both Instant Disk Recovery and Instant FCD Recovery must be finalized:
- [For the Instant Disk Recovery option] First, test the recovered disks and then decide whether to publish them to the production environment or stop publishing the disks.
- [For the Instant FCD Recovery option] Migrate the recovered disks to the production environment or stop publishing them.
To publish the disks, Veeam Backup & Replication uses the Quick Migration mechanism. For details, see Quick Migration.