DEVICE AND METHOD FOR DETERMINING A NUMBER STORAGE DEVICES FOR EACH OF A PLURALITY OF STORAGE TIERS AND AN ASSIGNMENT OF DATA TO BE STORED IN THE PLURALITY OF STORAGE TIERS

摘要

A device and method for determining number of storage devices for each of plurality of storage tiers and assignment of data to be stored in the plurality of storage tiers. The device computes an optimized number of storage devices for each tier including a classifier, which receives units as input data to be stored in the system. Based on the characteristics of the storage devices, the device outputs a data-unit-to-storage tier assignment. An optimizer receives data-unit-to-storage tier assignment from the classifier and a cost budget for the system. Thereafter, an output for the number of storage devices for each storage tier is calculated. A method for determining number of storage devices for each of a plurality of storage tiers and assignment of data to be stored in the plurality of storage tiers are also provided.

主权项

1. A device for determining a number of storage devices for each of a plurality of storage tiers of a tiered storage system and for determining an assignment of data to be stored in the plurality of storage tiers, the device comprising:
a reconfigurable classifier unit configured to receive a first set of parameters indicating characteristics of the data to be stored and characteristics of the storage devices and a second set of parameters indicating classifier unit configuration parameters, and to determine an assignment of the data to the plurality of storage tiers based on the first set of parameters and the second set of parameters; a dimensioning unit configured to receive a cost value, to determine the number of storage devices for each of the plurality of storage tiers based on the determined assignment, the received cost value, and a performance metric, and to estimate a value of the performance metric based on the determined assignment and the determined number of storage devices; and a classifier reconfiguration unit configured to determine the second set of parameters and to provide the second set of parameters to the reconfigurable classifier unit, wherein the reconfigurable classifier unit is configured to adapt the assignment of the data to the plurality of storage tiers based on the first set of parameters and the second set of parameters.