The customer has stated that they plan on purchasing new physical server component and repository...

The additional information that is needed to define the implementation process later is how much backup data is stored on the old hardware. This information is important for designing and sizing the migration strategy and timeline for moving the backups from the old hardware to the new hardware. For example, you can use the amount of backup data to estimate how long it will take to copy or move the backups to the new storage devices. You can also use the amount of backup data to determine whether you need to use compression, deduplication, or WAN acceleration to optimize the migration traffic.

References: [Migrating Backup Files], [WAN Acceleration]