A matching hot spare exactly matches several characteristics of a designated data disk. Understanding what a matching spare is, and how Data ONTAP selects spares, enables you to optimize your spares allocation for your environment.
A matching spare is a disk that exactly matches a data disk for all of the following criteria:
The effective disk type can be affected by the value of the raid.mix.hdd.performance and raid.mix.hdd.capacity options, which determine the disk types that are considered to be equivalent.