发明名称 |
Method and apparatus to migrate existing data among storage systems based on a traffic amount that does not exceed a preset threshold |
摘要 |
According to an aspect of the invention, a computer comprises a memory; and a processor operable to manage a plurality of path groups, each of which includes a plurality of logical paths associated with a host computer, wherein each logical path of the plurality of logical paths connects the host computer to a logical volume of one or more logical volumes in one or more storage systems. The processor is operable to manage a priority of each path group of the plurality of path groups, and to use a logical path of a first path group instead of a logical path of a second path group for I/O (input/output) usage between the host computer and the one or more storage systems, representing a migration of I/O usage from the second path group to the first path group, based on at least the priorities of the first and second path groups. |
申请公布号 |
US8832334(B2) |
申请公布日期 |
2014.09.09 |
申请号 |
US201213570740 |
申请日期 |
2012.08.09 |
申请人 |
Hitachi, Ltd. |
发明人 |
Okita Hideki |
分类号 |
G06F3/00 |
主分类号 |
G06F3/00 |
代理机构 |
Mattingly & Malur, PC |
代理人 |
Mattingly & Malur, PC |
主权项 |
1. A computer comprising:
a memory; and a processor being operable to manage a plurality of path groups, each of which includes a plurality of logical paths associated with a host computer, wherein each logical path of the plurality of logical paths connects the host computer to a logical volume of one or more logical volumes in one or more storage systems; wherein the processor is operable to manage a priority of each path group of the plurality of path groups, and to use a logical path of a first path group instead of a logical path of a second path group for I/O (input/output) usage between the host computer and the one or more storage systems, representing a migration of I/O usage from the second path group to the first path group, based on at least the priorities of the first and second path groups; wherein each path group has a present threshold; and wherein the processor is operable, when a traffic amount of one path group exceeds the preset threshold for the one path group, to migrate I/O usage from one or more logical paths in the path group to one or more logical paths in another path group, which has a lower priority than the one path group and which has a traffic amount that does not exceed the preset threshold for said another path group. |
地址 |
Tokyo JP |