ELASTIC I/O PROCESSING WORKFLOWS IN HETEROGENEOUS VOLUMES

摘要

The present disclosure provides advantageous methods and systems for input/output processing workflows in a heterogeneous data volume. One embodiment relates to a method of writing data to a heterogeneous data volume having multiple disk classes of storage. A class of storage tier for the data write is selected using operating modes for the tiers, where the operating mode for a tier instance depends on statistical measures of operating parameters for that tier. One operating mode is an elastic mode, where the chance that a tier instance is selected may vary depending on a statistical measure of an operating parameter in relation to lower and upper threshold values. Other embodiments, aspects and features are also disclosed.

主权项

1. A method of writing data to a heterogeneous data volume (HV) having multiple disk classes of storage, the method comprising:
receiving a request for a data write; finding a class of storage (CoS) tier instance of the HV that matches the data write request; determining an operating mode of the CoS tier instance; and if the operating mode comprises a static mode, then setting a CoS tier for the data write to be the CoS tier instance; and if the operating mode comprises a disabled mode, then incrementing the CoS tier instance; and if the operating mode comprises an elastic mode, then setting the CoS tier for the data write to be the CoS tier instance with a computed probability, and otherwise incrementing the CoS tier instance.