Virtual data tiering in storage systems

A method, comprising:

• identifying a first subset of a set of data as prioritized data and a second subset of the set of data as non-prioritized data, wherein the set of data is stored across a set of primary storage nodes and a set of secondary storage nodes;
• and
• enforcing a first quality of service level for the first subset and a second quality of service level for the second subset, wherein the first quality of service level provides faster access to data than the second quality of service level.

A non-transitory computer readable storage medium storing instructions which, when executed, cause a processing device to:

• identify a first subset of a set of data as prioritized data and a second subset of the set of data as non-prioritized data, wherein the set of data is stored across a set of primary storage nodes and a set of secondary storage nodes;
• and
• enforce a first quality of service level for the first subset and a second quality of service level for the second subset, wherein the first quality of service level provides faster access to data than the second quality of service level.