Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2011-07-26
2011-07-26
Bragdon, Reginald G (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C714SE11080, C714SE11118, C360S015000
Reexamination Certificate
active
07987328
ABSTRACT:
In a virtual disk library device access of data stored in a tape can be conducted at a high speed with a high-speed archiving process from a disk to the tape in units of LUs maintained. The efficiency of update of the data stored in the tape can be improved. In this system, when the data stored in the tape is to be accessed with a high-speed archiving process in units of LUs from the disk to the tape maintained, a disk staging process is performed in the unit of a page that is smaller than the unit of an LU, and accordingly, high-speed access can be implemented. In addition, when an update process for the data (LU) stored in the tape is performed, the host can be responded by only staging an update target page of the LU, and a prior disk staging process is performed for the remaining pages of the LU in the background. Accordingly, when the data is re-stored in the tape, immediately storing the data in the tape can be performed without performing a staging process.
REFERENCES:
patent: 4158235 (1979-06-01), Call et al.
patent: 4755928 (1988-07-01), Johnson et al.
patent: 5835953 (1998-11-01), Ohran
patent: 6490648 (2002-12-01), Kaneda et al.
patent: 7529784 (2009-05-01), Kavuri et al.
patent: 2004/0117398 (2004-06-01), Idei et al.
patent: 2006/0123207 (2006-06-01), Yamamoto et al.
patent: 2007/0079099 (2007-04-01), Eguchi
patent: 2007/0103984 (2007-05-01), Kavuri et al.
patent: 2007/0266204 (2007-11-01), Mizuno
patent: 2008/0091896 (2008-04-01), Usami
patent: 2009/0222453 (2009-09-01), Naineni
patent: 2007-305075 (2007-11-01), None
Mizuno Yoichi
Murayama Tomonori
Antonelli, Terry Stout & Kraus, LLP.
Bernard Daniel J
Bragdon Reginald G
Hitachi , Ltd.
Hitachi Computer Peripherals Co., Ltd.
LandOfFree
Data archive system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Data archive system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data archive system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2722120