STORAGE DEVICE ADJUSTING DEVICE AND TIERED STORAGE DESIGNING METHOD

摘要

A memory stores plural pieces of information on a storage device including a first storage medium and a second storage medium. A processor obtains ratios of accesses to the respective storage mediums to a total number of accesses for the respective storage devices. The processor obtains a first number of requests that is a number of accesses capable of being processed in the respective storage devices within a prescribed time period. An interface preferentially reports information on the storage device having a relatively small difference between the first number of requests and the second number of requests.

主权项

1. A storage device adjusting device comprising:
a memory configured to store plural pieces of information on a storage device that includes a first storage medium and a second storage medium capable of higher-speed access than the first storage medium; a processor configured to execute a process including:
obtaining ratios of accesses to the respective storage mediums to a total number of accesses for the respective storage devices, using a function indicating a relationship between pieces of data stored in the respective storage mediums and access frequencies to the respective pieces of data, when pieces of data having high access frequencies have been stored preferentially in the second storage medium;obtaining a first number of requests that is a number of accesses capable of being processed in the respective storage devices within a prescribed time period on the basis of a number of requests capable of accessing the first storage medium within the prescribed time period and the ratio for the first storage medium; andobtaining a second number of requests that is a number of accesses capable of being processed in the respective storage devices within the prescribed time period on the basis of a number of requests capable of accessing the second storage medium within the prescribed time period and the ratio for the second storage medium; and an interface configured to preferentially report information on the storage device that has a relatively small difference between the first number of requests and the second number of requests.