Storage system
First Claim
1. A storage system comprising;
- a control unit; and
a plurality of disk devices including a plurality of first type disk devices accessed via first type interfaces and a plurality of second type disk devices accessed via second type interfaces;
wherein the control unit detects interface types related to the plurality of disk devices so that a plurality of RAID groups, which includes a first type RAID group configured by plural first type disk devices and a second type RAID group configured by plural second type disk devices, are configured based on the detected interface types, and a plurality of logical units, which includes a first type logical unit configured in the first type RAID group and a second type logical unit configured in the second type RAID group, are configured,wherein the control unit manages a relation between the first type logical unit and a first type interface and between the second type logical unit and a second type interface, and the second type logical unit is selected for storing backup data for the first type logical unit based on the relation managed by the control unit, andwherein the control unit manages a backup operation from the first type logical unit to the second type logical unit.
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Accused Products
Abstract
A disk array includes a drive management unit, which is a program for identifying kinds of disk devices and managing different disk devices separately, and a drive management table for storing information to be utilized by the drive management unit. The disk array further includes a program for managing ac-cumulated time of disk devices. The program includes a drive lifetime setting portion for setting lifetimes of drives, a drive start/stop portion for intentionally starting/stopping ATA disk devices, and an operation time measurement portion for measuring accumulated operation time. Since it is necessary to be conscious of difference in reliability and performance among disk devices when forming a RAID, a drive kind notification unit, which is a program for notifying of the kind of a disk device when forming the RAID, is provided.
75 Citations
20 Claims
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1. A storage system comprising;
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a control unit; and a plurality of disk devices including a plurality of first type disk devices accessed via first type interfaces and a plurality of second type disk devices accessed via second type interfaces; wherein the control unit detects interface types related to the plurality of disk devices so that a plurality of RAID groups, which includes a first type RAID group configured by plural first type disk devices and a second type RAID group configured by plural second type disk devices, are configured based on the detected interface types, and a plurality of logical units, which includes a first type logical unit configured in the first type RAID group and a second type logical unit configured in the second type RAID group, are configured, wherein the control unit manages a relation between the first type logical unit and a first type interface and between the second type logical unit and a second type interface, and the second type logical unit is selected for storing backup data for the first type logical unit based on the relation managed by the control unit, and wherein the control unit manages a backup operation from the first type logical unit to the second type logical unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A storage system comprising;
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a plurality of first type disk devices each including a first type interface adapted to a first protocol; a plurality of second type disk devices each including a second type interface adapted to a second protocol; and a control unit coupled to the plurality of first type disk devices and the plurality of second type disk devices, wherein the control unit obtains information regarding types of interfaces of the plurality of first type disk devices and the plurality of second type disk devices, wherein at least one first type RAID group is configured by the plurality of first type disk devices and at least one second type RAID group is configured by the plurality of second type disk devices based on the information regarding types of interfaces of the plurality of first type disk devices and the plurality of second type disk devices, wherein at least one logical unit is configured in the at least one first type RAID group, and at least one logical unit is configured in the at least one second type RAID group, wherein the control unit manages a relation between a logical unit and a type of interface related to the logical unit, and wherein a logical unit configured in the second type RAID group is selected for storing backup data based on the relation managed by the control unit. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A storage system comprising;
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a plurality of first type disk devices accessed via first type interfaces; a plurality of second type disk devices accessed via second type interfaces; and a control unit coupled to the plurality of first type disk devices and the plurality of second type disk devices, wherein the control unit issues commands to the plurality of first type disk devices and the plurality of second type disk devices and obtains information regarding types of interfaces of the plurality of first type disk devices and the plurality of second type disk devices in response to the commands, wherein at least one first type RAID group is configured by the plurality of first type disk devices and at least one second type RAID group is configured by the plurality of second type disk devices based on the information regarding types of interfaces of the plurality of first type disk devices and the plurality of second type disk devices, wherein at least one first type logical unit is configured in the at least one first type RAID group, and at least one second type logical unit is configured in the at least one second type RAID group, wherein the control unit manages a relation between the at least one first type logical unit and a first type interface and between the at least one second type logical unit and a second type interface, and wherein a first logical unit of the at least one first type logical unit is selected as a copy source logical unit and a second logical unit of the at least one second type logical unit is selected as a copy destination logical unit based on the relation managed by the control unit, and the control unit executes a data copy operation from the first logical unit to the second logical unit. - View Dependent Claims (19, 20)
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Specification