Storage system and data storage method using storage system which decides size of data to optimize the total of data size transfer efficiency
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 19, 2013
Grant Date -
Oct 27, 2011
app pub date -
May 29, 2009
filing date -
May 29, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A secondary subsystem reads first differential data recorded in a magnetic tape device into a magnetic disk device, and manages such data based on second differential data that was created based on the read first differential data and differential management information. Then, whether differential data exists in partial data is determined based on the differential management information, and, if such differential data exists, the partial data is read into a cache memory, and differential data is applied to the partial data. Meanwhile, if differential data does not exist, the partial data is read into the buffer. Moreover, new full data is recorded by writing the partial data, which was read into the cache memory or the buffer, onto the magnetic tape device in parallel with other read processing.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully