US 2016/0110117 A1 · COMPUTER SYSTEM AND METHOD FOR CONTROLLING HIERARCHICAL STORAGE THEREFOR

Abstract

A method for controlling hierarchical storage including: a first step for storing first information relating to the association between the specific processes and the storage regions of the storage tiers; a second step for obtaining second information relating to the access operations of the specific processes as a function of time; a third step for obtaining third information relating to the amount of access to the storage regions as a function of time; and a fourth step for identifying the time of occurrence of a change in the amount of access, from the second information and the third information on the basis of the first information, and determining, according to the identified time of occurrence of the change in the amount of access, a transfer initiation time at which data in the storage regions is to be transferred between storage tiers.

Claims11

Dependent claims

A method for controlling hierarchical storage executed by a control unit of a computer system having a plurality of storage tiers differing in accessing performance, an application program executed by a processing unit of the computer system having specific process to access a storage area within the storage tiers,

the method including:
a first step of storing first information on matching between the specific process and the storage region;
a second step of acquiring second information on access actions of the specific process over time;
a third step of acquiring third information on the amount of access to the storage region over time;
and
a fourth step of identifying the time of variation of the amount of access from the second information and the third information on the basis of the first information and so determining a migration start time as to migrate data in the storage region among the storage tiers according to the time of variation of the amount of access.

3 more elements

A computer system including a storage, a host computer and a management computer,

wherein the storage has a plurality of storage tiers differing in access performance level;
the host computer executes an application program including specific process to access a memory area in the storage tier;
the management computer:
stores first information on matching between the specific process and the storage region;
acquires from the host computer second information on actions of accesses over time in the specific process;
acquires from the storage third information on the amount of access over time in the storage region;
and
identifies the time of variation of the amount of access from the second information and the third information on the basis of the first information, and so determines the migration start time according to the time of variation of the amount of access as to migrate data in the storage region among the storage tiers in the storage.

5 more elements

Dependencies are inferred from the claim text.

Computer system and method for controlling hierarchical storage therefor

Life of this patent

Computer system and method for controlling hierarchical storage therefor

Life of this patent

Abstract

Claims11