Computer system, storage system and method for extending volume capacity
First Claim
1. A computer system comprising:
- at least one first type of drive including a plurality of first storage regions;
at least one second type of drive including a plurality of second storage regions; and
a processor providing a logical volume which is accessed from a computer, controlling mapping information regarding a portion of said logical volume, and monitoring an access frequency of first storage regions and second storage regions that are mapped to said portion of said logical volume,wherein, when said access frequency of at least one first storage region, that is monitored by said processor, is higher than a predetermined value, said processor copies data in said at least one first storage region mapped to said portion of said logical volume, from said at least one first storage region to at least one second storage region which is not mapped to said portion of said logical volume, andwherein said processor changes said mapping information concerning said copied data from said at least one first storage region to said at least one second storage region.
0 Assignments
0 Petitions
Accused Products
Abstract
The object of the present invention is to prevent distribution of a storage range to a volume from an inappropriate disk drive based on use of the volume as a result of an automatic extension of a volume capacity. A computer system has a storage system including a physical storage device, a host computer, and a management computer. The storage system includes a plurality of kinds of physical storage devices physically dividing into two segments or more the volume and records as constitution information the correspondence between each segment and the volume using the segment. And the storage system records the kind of physical storage device to be allocated to the volume and selects the physical storage device according to the kind of stored physical storage device for allocation of the segment when the host computer performs an I/O access to the volume. Access frequency is monitored and data is copied based on the monitored access frequency.
-
Citations
20 Claims
-
1. A computer system comprising:
-
at least one first type of drive including a plurality of first storage regions; at least one second type of drive including a plurality of second storage regions; and a processor providing a logical volume which is accessed from a computer, controlling mapping information regarding a portion of said logical volume, and monitoring an access frequency of first storage regions and second storage regions that are mapped to said portion of said logical volume, wherein, when said access frequency of at least one first storage region, that is monitored by said processor, is higher than a predetermined value, said processor copies data in said at least one first storage region mapped to said portion of said logical volume, from said at least one first storage region to at least one second storage region which is not mapped to said portion of said logical volume, and wherein said processor changes said mapping information concerning said copied data from said at least one first storage region to said at least one second storage region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for a computer system, comprising:
-
controlling mapping information regarding a portion of a logical volume which is accessed from a computer and a plurality of first storage regions and a plurality of second storage regions, where the plurality of first storage regions includes at least one first type of drive and the plurality of second storage regions includes at least one second type of drive which is a different type of drive from said at least one first type of drive; monitoring an access frequency of first storage regions and second storage regions mapped to said portion of said logical volume; copying, when said access frequency of at least one first storage region, that is monitored by said processor, is higher than a predetermined value, data in at least one first storage region mapped to said portion of said logical volume, from said at least one first storage region to at least one second storage region which is not mapped to said portion of said logical volume; and changing mapping information concerning said copied data from said at least one first storage region to said at least one second storage region. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification