Allocating storage for Hyper-V instant recovery

Because the disk for a recovered virtual machine resides on the Unitrends appliance until the storage migration is complete (see How Hyper-V instant recovery works), you must allocate storage for instant recovery. It is recommended that you allocate storage before a virtual machine fails to ensure the space is available when you need it. You must allocate at least twenty percent of the used space on the original virtual disk.

Storage allocation can be distributed among backups/replication, vaulting, and instant recovery, depending on the identity of your Unitrends appliance. When you allocate storage for one function, it cannot be used for other functions.

Note: You can perform the recovery from a backup system or replication target, so make sure to allocate instant recovery storage for all the Unitrends appliances that you will use for instant recovery.

To allocate storage for Hyper-V instant recovery

1        On the Unitrends appliance, select Settings > Storage and Retention > Storage Allocation.

2        Slide the storage distribution for instant recovery or enter the desired size in the field below the pie chart.

3        Click Confirm. This takes you back to the Storage and Retention screen.

4        Continue setting up your Unitrends appliance by Configuring port security for Hyper-V instant recovery.