Allocating variable media types of memory devices in a memory system

A method comprising:

• receiving a first instruction specifying that first data is to remain on a first memory device of a plurality of memory devices, the first memory device comprising a first media having a first media type;
• receiving a second instruction specifying, based on one or more criteria, that second data is to be moved from the first media having the first media type to a second memory device of the plurality of memory devices, the second memory device comprising a second media having a second media type that is different than the first media type;
• and
• controlling the first and second data in the plurality of memory devices based on the first instruction and the second instruction.

A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to perform operations comprising:

• receiving a first instruction specifying that first data is to remain on a first memory device of a plurality of memory devices, the first memory device comprising a first media having a first media type;
• receiving a second instruction specifying, based on one or more criteria, that second data is to be moved from the first media having the first media type to a second memory device of the plurality of memory devices, the second memory device comprising a second media having a second media type that is different than the first media type;
• and
• controlling the first and second data in the plurality of memory devices based on the first instruction and the second instruction.