Maintaining correct i/o statistics in a tiered storage environment

A computer program product for maintaining I/O statistics in a tiered storage environment, the computer program product comprising a computer-readable storage medium having computer-usable program code embodied therein, the computer-usable program code configured to perform the following when executed by at least one processor:

• maintain, by a tiered storage layer, I/O statistics for data storage areas within a storage system;
• migrate, by the tiered storage layer, data between storage tiers in accordance with the I/O statistics;
• alter, by a data services layer separate from the tiered storage layer, selected data within the storage system;
• generate, by the data services layer, a message to the tiered storage layer describing the alteration;
• and
• modify, by the tiered storage layer, the I/O statistics in accordance with the alteration described by the message.

A system for maintaining I/O statistics in a tiered storage environment, the system comprising:

• at least one processor;
• at least one memory device operably coupled to the at least one processor and storing instructions for execution on the at least one processor, the instructions causing the at least one processor to:
• maintain, by a tiered storage layer, I/O statistics for data storage areas within a storage system;
• migrate, by the tiered storage layer, data between storage tiers in accordance with the I/O statistics;
• alter, by a data services layer separate from the tiered storage layer, selected data within the storage system;
• generate, by the data services layer, a message to the tiered storage layer describing the alteration;
• and
• modify, by the tiered storage layer, the I/O statistics in accordance with the alteration described by the message.