SERVER SYSTEM AND CONTROL METHOD FOR SAME

• US 20090248870A1
• Filed: 05/28/2008
• Published: 10/01/2009
• Est. Priority Date: 03/26/2008
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: KAMEI, Hitoshi, SUTOH, Atsushi
• Granted Patent: US 8,880,694 B2
• Time in Patent Office: Days
• US Class Current: 709/225
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1029 using data related to the state of servers by a load balancer
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

Abstract

The server system includes a server apparatus transmitting and receiving file data based on an access request transmitted from a client apparatus; and a management apparatus managing the server apparatus, wherein the server apparatus includes a plurality of virtual server parts controlling transmission and reception of the data independently for each of the predetermined client apparatuses; a data flow configuration part configuring a data flow for each of the file data transmitted to and received by the virtual server parts based on a command from the management apparatus; and a load control part controlling a data flow for each of the file data to control load of the virtual server parts based on the data flow for each of the file data configured by the data flow configuration part.

Claims

1. A server system including:

a server apparatus transmitting and receiving file data based on an access request transmitted from a client apparatus; and

a management apparatus managing the server apparatus,

wherein the server apparatus comprises;

a plurality of virtual server parts controlling transmission and reception of the file data independently for each of the predetermined client apparatuses;

a data flow configuration part configuring a data flow for each of the file data transmitted and received by the virtual server parts based on a command from the management apparatus; and

a load control part controlling a data flow for each of the file data to control load of the virtual server parts based on the data flow for each of the file data configured by the data flow configuration part.

2. The server system according to claim 1, wherein:

the data flow configuration part

configures data flow for each of the virtual server parts based on a command from the management apparatus; and

the load control part controls data flow for each of the virtual server parts based on data flow for each of the virtual server parts configured by the data flow configuration part to control a load of the virtual server parts.

3. The server system according to claim 1,

wherein the load control part

manages statistics information on data flow for each of the file data transmitted to and received by the virtual server parts and transmits statistics information on data flow for each of the file data to the management terminal based on a command from the management apparatus.

4. The server system according to claim 3,

wherein, in the case where an access request transmitted from the client apparatus is a READ request, the load control part compares a value of data flow calculated based on statistics information on data flow of READ of the file data corresponding to the READ request with a configuration value of data flow of READ of the file data configured by the data flow configuration part to halt READ of the file data for a predetermined time period when a configuration value of the data flow is surpassed.

5. The server system according to claim 3,

wherein, in the case where an access request transmitted from the client apparatus is a WRITE request, the load control part compares a value of data flow calculated based on statistics information on data flow of WRITE of the file data corresponding to the WRITE request with a configuration value of data flow of WRITE of the file data configured by the data flow configuration part to halt WRITE of the file data for a predetermined time period when a configuration value of the data flow is surpassed.

6. The server system according to claim 2,

wherein the load control part

manages important file data in the file data to determine whether or not the virtual server part is processing important file data when a configuration value of data flow of the virtual server part configured by the data flow configuration part is surpassed and, in the case of not processing the important file data, moves the relevant virtual server part to another server apparatus.

7. The server system according to claim 1 comprising

a plurality of server apparatuses,

wherein the management apparatus comprises

a management part managing the plurality of server apparatuses and

the management part

obtains load status of virtual servers of all server apparatuses from the load control part and controls the relevant server apparatus so as to disperse a load of the a plurality of server apparatuses according to the load status.

8. The server system according to claim 7,

wherein the management part

obtains statistics information on data flow for each of the file data and a configuration value of data flow of the file data configured by the data flow configuration part from virtual server parts of all server apparatuses, compares a value of data flow calculated based on the statistics information with a configuration data of data flow of READ of the file data configured by the data flow configuration part and halts an access to the file data for a predetermined time period or transmits a mobility configuration command for moving a virtual server part corresponding to the file data to the another server apparatus when it is determined that a configuration value of the relevant data flow is surpassed.

9. The server system according to claim 8,

wherein the load control part halts an access to the relevant file data for a predetermined time period based on a command transmitted from the management part or moves a virtual server part-corresponding to the relevant file data to another server apparatus.

10. The server system according to claim 1,

wherein a command transmitted from the management apparatus is:

a file data flow configuration command establishing a corresponding relation among a command number, a virtual server ID, the file path, and data flow, a file data flow acquisition request command establishing a corresponding relation among the command number, the virtual server ID and the file path, a virtual server data flow configuration command establishing a corresponding relation among the command number, the virtual server ID and the data flow, virtual server data flow acquisition request command establishing a corresponding relation between the command number and the virtual server ID, or a mobility configuration command establishing a corresponding relation among the command number, the virtual server ID and the file path.

11. A control method of a server system including a server apparatus transmitting and receiving file data based on an access request transmitted from a client apparatus;

and a management apparatus managing the server apparatus,

wherein a data flow configuration part comprises;

a first step where a data flow configuration part configures a data flow for each of the file data of a plurality of virtual server parts controlling transmission and reception of the file data independently for each of the predetermined client apparatuses based on a command from the management apparatus; and

a second step where a load control part controls a data flow for each of the file data to control load of the virtual server parts based on the data flow for each of the file data configured in the first step.

12. The control method of a server system according to claim 11,

wherein the first step

configures data flow for each of the virtual server parts based on a command from the management apparatus;

the second step

controls data flow for each of the virtual server parts based on data flow for each of the virtual server parts configured by the data flow configuration part to control a load to the virtual server parts.

13. The control method of a server system according to claim 11,

wherein the second step

manages statistics information on data flow for each of the file data transmitted to and received from the virtual server part and transmits statistics information of data flow for each of the file data to the management terminal based on a command from the management apparatus.

14. The control method of a server system according to claim 13,

wherein, in the second step,

in the case where an access request transmitted from the client apparatus is a READ request, a value of data flow calculated based on statistics information on data flow of READ of the file data corresponding to the READ request is compared with a configuration value of data flow of READ of the file data configured in the first step to halt READ of the file data for a predetermined time period when a configuration value of the data flow is surpassed.

15. The control method of a server system according to claim 13,

wherein, in the second '"'"'step,

in the case where an access request transmitted from the client apparatus is a WRITE request, a value of data flow calculated based on statistics information on data flow of WRITE of the file data corresponding to the WRITE request is compared with a configuration value of data flow of WRITE of the file data configured in the first step to halt WRITE of the file data for a predetermined time period when a configuration value of the data flow is surpassed.

16. The control method of a server system according to claim 12,

wherein, in the second step,

important file data in the file data is managed to determine whether or not the virtual server part is processing important data when a configuration value of data flow of the virtual server part configured in the first step is surpassed and, in the case of not processing the important file data, the virtual server part is moved to another server apparatus.

17. The control method of a server system according to claim 11 comprising a third step,

wherein a management part managing the plurality of server apparatuses of the management apparatus obtains load status of virtual servers of all server apparatuses from the load control part and controls the relevant server apparatus so as to disperse a load of the a plurality of server apparatuses according to the load status.

18. The control method of a server system according to claim 17,

wherein, in the third step, statistics information on data flow for each of the file data and a configuration value of data flow of the file data configured by the data flow configuration part is obtained from virtual server parts of all server apparatuses;

a value of data flow calculated based on the statistics information is compared with a configuration value of data flow of READ of the file data configured in the first step; and

an access to the file data is halted for a predetermined time period or a mobility configuration command for moving a virtual server part corresponding to the file data to another server apparatus is transmitted to the relevant server apparatus when it is determined that a configuration value of the relevant data flow is surpassed.

19. The control method of a server system according to claim 18,

wherein, in the third step,

an access to the relevant file data is halted for a predetermined time period based on a command transmitted from the management part or a virtual server part corresponding to the relevant file data is moved to another server apparatus.

20. The control method of a server system according to claim 11,

wherein a command transmitted from the management apparatus is

a file data flow configuration command establishing a corresponding relation among a command number, a virtual server ID, the file path, and data flow, a file data flow acquisition request command establishing a corresponding relation among the command number, the virtual server ID and the file path, a virtual server data flow configuration command establishing a corresponding relation among the command number, the virtual server IC and the data flow, a virtual server data flow acquisition request command establishing a corresponding relation between the command number and the virtual server ID, or a mobility configuration command establishing a corresponding relation among the command number, the virtual server ID and the file path.