A mirror backup takes a lot of storage space, like any form of complete backup. Disk mirroring, also referred to as RAID 1, entirely replicates data to two or three drives so that the company can access the mirror copy if one drive crashes. Before introducing cloud computing, SMBs running only one server and a couple of laptops were less likely to implement CDP due to expense and difficulty.
Near Continuous backup vs. CDP
Instant recovery is enabled by CDP and near CDP, enabling an application that automatically installs a recovery image when the primary image is destroyed. The distinction between the two is the objective of the recovery point they offer.