Electrical computers and digital data processing systems: input/ – Input/output data processing – Transfer direction selection
Reexamination Certificate
2005-07-26
2009-08-04
Kindred, Alford W (Department: 2181)
Electrical computers and digital data processing systems: input/
Input/output data processing
Transfer direction selection
C710S038000, C710S316000, C714S004110, C709S239000, C709S241000
Reexamination Certificate
active
07571264
ABSTRACT:
Provided is a computer system which includes computers and a storage system coupled to the computers. The storage system includes a first load measuring module that measures a first access load for each channel adaptor. At least one of the computers includes a path management module that manages paths through which the computers access logical units. The path management module includes a second load measuring module that measures a second access load imposed by access from the computer to the logical unit, and an active path setting module that selects one of the channel adaptors based on the first access and the second access load measured by the first and second load measuring modules, and setting an active path passing through the channel adaptor. Thus, a load on an entire system is balanced, thereby improving performance while a cache hit rate of a storage system is maintained.
REFERENCES:
patent: 4633387 (1986-12-01), Hartung et al.
patent: 4638424 (1987-01-01), Beglin et al.
patent: 5239649 (1993-08-01), McBride et al.
patent: 6601084 (2003-07-01), Bhaskaran et al.
patent: 6766359 (2004-07-01), Oliveira et al.
patent: 6802021 (2004-10-01), Cheng et al.
patent: 7058758 (2006-06-01), Allen et al.
patent: 2002/0156887 (2002-10-01), Hashimoto
patent: 2004/0078632 (2004-04-01), Infante et al.
patent: 2005/0182849 (2005-08-01), Chandrayana et al.
patent: 2000-330924 (2000-11-01), None
patent: 2002-182978 (2002-06-01), None
Aoki Makoto
Kadoiri Satoshi
Kohama Osamu
Morishima Hiroshi
Nagase Isao
Abad Farley J
Brundidge & Stanger, P.C.
Hitachi , Ltd.
Hitachi Software Engineering Co. Ltd.
Kindred Alford W
LandOfFree
Computer system for load balance, and method and program for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer system for load balance, and method and program for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer system for load balance, and method and program for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4065137