Storage system with drive writes per day based tiering

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by at least one processing device comprising a processor coupled to a memory, causes the at least one processing device:

• to implement a plurality of storage tiers in a storage system based at least in part on a drive writes per day metric, including at least a first storage tier associated with a first value of the drive writes per day metric and a second storage tier associated with a second value of the drive writes per day metric different than the first value of the drive writes per day metric, each of the storage tiers comprising one or more storage drives each having assigned thereto the value of the drive writes per day metric of that storage tier;
• and
• to dynamically move data of the storage system between the storage tiers of the storage system based at least in part on data access frequency in a manner that places more frequently accessed data on one of the storage tiers having a higher value of the drive writes per day metric than another of the storage tiers.