Methods and apparatus for assigning performance to data volumes on data storage systems

• US 7,979,604 B2
• Filed: 01/07/2008
• Issued: 07/12/2011
• Est. Priority Date: 01/07/2008
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Kaneda, Yasunori
• Primary Examiner(s): Kim; Charles
• Assistant Examiner(s): HOLLAND, SHERYL L
• Application Number:
  US11/970,225
• Publication Number:
  US 20090177666A1
• Time in Patent Office: 1,282 Days
• Field of Search: 707/802, 707/812, 707/703, 710/41
• US Class Current: 710/41
• CPC Class Codes: G06F 16/10 File systems; File servers

Abstract

A computerized data storage system and a method for portioning performance among data areas on a hard disk drive. The system includes a management computer coupled to one or more host computers and a storage apparatus. The storage apparatus includes hard disk drives and a storage controller for partitioning the hard disk drives among data volumes in the storage apparatus and for assigning the data volumes to the host computer. A performance partitioning module utilizes a queue management table for forming a number of queues on memory of the hard disk drive. The queues receive READ and WRITE requests and convey these requests to data areas assigned on recording media of the hard disk drive. After a request from a queue is executed, a gate between the queue and the data areas may be closed to allow requests from other queues an opportunity to access the data areas.

Claims

1. A computerized data storage apparatus comprising:

a plurality of storage devices;

and a storage controller operable to provide a plurality of logical data volumes to at least one host computer for data access, wherein;

said logical data volume is associated with a performance information,

each of the plurality of storage devices includes a plurality of data areas and a queue associated

to each of said plurality of data areas;

each queue is associated to a logical data volume based on performance information,

wherein a mapping information between said plurality of queues and said plurality of data areas is stored in said storage controller and updated dynamically according to said performance information,

said logical data volume is allocated from multiple data areas of said plurality of data areas from said storage devices, wherein each data area of said data areas is allocated in response to a write request using said mapping information;

wherein the storage devices of the storage apparatus store the data being provided to the host computer through the data volumes, and

wherein the storage devices comprise a storage device memory for storing and executing;

a response program for responding to a READ/WRITE command from the host computer;

a performance partitioning program for adjusting request execution among data areas and

a performance partitioning management program for configuring a performance partition management table and a performance partition status table;

wherein the storage device memory stores;

a performance partition management table including a logical block addressing range for each of the data areas and

a performance table including performance information for the storage device;

wherein a performance partition management table on each of the storage devices records a correspondence between each one of the data areas and one or more of the plurality of data areas,

wherein a volume map table on the storage apparatus maps each of the data volumes to one or more of the storage devices, and

wherein the data available from each of the data volumes is stored on the data areas on one or more of the hard disk drives;

wherein the performance information comprises a data access length, a hard disk drive performance parameter and a partition performance parameter, and wherein the hard disk drive performance parameter and the partition performance parameter are determined based on a number of input/output operations per second.

2. The computerized data storage apparatus of claim 1, wherein the storage devices are hard disk drives;

wherein said mapping information is updated in response to a mapping request to change performance of said computerized data storage apparatus,

wherein no data areas are allocated to said logical data volume when said logical data volume is created.

3. The computerized data storage apparatus of claim 1, wherein the storage devices comprise at least one semiconductor memory unit.

4. The computerized data storage apparatus of claim 1, wherein the storage controller of the storage apparatus is operable to allocate a performance unit to each of the plurality of data areas of a specific storage device.

5. The computerized data storage apparatus of claim 1, wherein the performance information comprises a requested logical data volume performance specified by a user.

6. The computerized data storage apparatus of claim 1, wherein the host computer comprises a logical data volume allocation request program for sending requests for allocation of the logical data volumes on the storage apparatus, the logical data volumes storing data being utilized by at least one application program running on the host computer.

7. The computerized data storage apparatus of claim 1, wherein the storage apparatus further comprises:

a response program for responding to a READ or WRITE command from the host computer;

a volume allocation program for creating the data volumes and allocating the data volumes to a host computer; and

a volume map reporting program for reporting volume mapping information to the management module,

wherein a volume map table generated by the volume map reporting program establishes a correspondence between each data volume and the storage devices associated with the data volume.

8. The computerized data storage apparatus of claim 1,

wherein each of storage devices includes a recording medium being divided into one or more data areas, and

wherein for each of the storage devices, the performance partition management table provides the data area corresponding to each of the data areas on the storage device.

9. The computerized data storage apparatus of claim 1, wherein the management module resides on a management computer coupled to the host computer and the storage apparatus or on the storage apparatus.

10. The computerized data sotrage apparatus of claim 1, wherein the write request comprises a requisite data access length and a requisite number of input/output operations per second.

11. The computerized data storage apparatus of claim 4, wherein the performance unit is a time window ratio.

12. The computerized data storage apparatus of claim 8, wherein the management module stores:

a data volume provisioning request program for sending a request to the storage apparatus,

a storage device performance partitioning request program for requesting partitioning of the storage device among the data volumes, and

a performance monitoring program for monitoring performance partition status and adjusting the partitioning.

13. A computerized data storage apparatus

comprising:

a plurality of storage devices;

and a storage controller operable to create a logical data volume provided to a host computer for data access, wherein;

said logical data volume is associated with a performance information;

each of said plurality of storage devices includes a plurality of data areas and a plurality of queues associated to said plurality of data areas;

each of said plurality of storage devices comprises a partition information including an information on number of said data areas and an information on number of queues;

said storage controller associates at least some of said plurality of queues to the logical data volume according to the performance information and the partition information;

wherein a mapping information between said plurality of queues and said plurality of data areas is stored in said storage controller and updated dynamically according to said performance information,

wherein each data area of said data areas is allocated in response to a write request using said mapping information;

wherein the storage devices of the storage apparatus store the data being provided to the host computer through the data volumes, and

wherein the storage devices comprise a storage device memory for storing and executing;

a response program for responding to a READ/WRITE command from the host computer;

a performance partitioning program for adjusting request execution among data areas and

a performance partitioning management program for configuring a performance partition management table and a performance partition status table;

wherein the storage device memory stores;

a performance partition management table including a logical block addressing range for each of the data areas and

a performance table including performance information for the storage device;

wherein a performance partition management table on each of the storage devices records a correspondence between each one of the data areas and one or more of the plurality of data areas,

wherein a volume map table on the storage apparatus maps each of the data volumes to one or more of the storage devices, and

wherein the data available from each of the data volumes is stored on the data areas on one or more of the hard disk drives;

wherein the performance information comprises a data access length, a hard disk drive performance parameter and a partition performance parameter, and wherein the hard disk drive performance parameter and the partition performance parameter are determined based on a number of input/output operations per second.

14. The computerized data storage apparatus of claim 13, wherein the storage devices are hard disk drives;

wherein said mapping information is updated in response to a mapping request to change performance of said computerized data storage apparatus,

wherein no data areas are allocated to said logical data volume when said logical data volume is created.

15. The computerized data storage apparatus of claim 13, wherein the storage controller of the storage apparatus is operable to allocate a performance unit to each of the plurality of data areas of a specific storage device.

16. The computerized data storage apparatus of claim 13, wherein the host computer comprises a logical data volume allocation request program for sending requests for allocation of the logical data volumes on the storage apparatus, the logical data volumes storing data being utilized by at least one application program running on the host computer.

17. The computerized data storage apparatus of claim 13, wherein the storage apparatus further comprises:

a response program for responding to a READ or WRITE command from the host computer;

a volume allocation program for creating the data volumes and allocating the data volumes to a host computer;

and a volume map reporting program for reporting volume mapping information to the management module,

wherein a volume map table generated by the volume map reporting program establishes a correspondence between each data volume and the storage devices associated with the data volume.

18. The computerized data sotrage apparatus of claim 13, wherein the write request comprises a requisite data access length and a requisite number of input/output operations per second.