Inventor
NOZAWA MASAFUMI
JP40 patents
⚠️ This page may combine multiple inventors who share the name “NOZAWA MASAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
38 patentsUS5226157AJul 6, 1993
Backup control method and system in data processing system using identifiers for controlling block data transfer
HITACHI LTD1,461 citations99
US5193154AMar 9, 1993
Buffered peripheral system and method for backing up and retrieving data to and from backup memory device
HITACHI LTD1,533 citations99
US4525839AJun 25, 1985
Method of controlling storage device
HITACHI LTD189 citations99
US7395284B2Jul 1, 2008
storage system
HITACHI LTD64 citations98
US7356660B2Apr 8, 2008
Storage device
HITACHI LTD96 citations98
US5584008ADec 10, 1996
External storage unit comprising active and inactive storage wherein data is stored in an active storage if in use and archived to an inactive storage when not accessed in predetermined time by the host processor
HITACHI LTD124 citations98
US5253351AOct 12, 1993
Memory controller with a cache memory and control method of cache memory including steps of determining memory access threshold values
HITACHI LTD132 citations97
US5235641AAug 10, 1993
File encryption method and file cryptographic system
HITACHI LTD259 citations97
US7096336B2Aug 22, 2006
Information processing system and management device
HITACHI LTD35 citations96
US5613088AMar 18, 1997
Raid system including first and second read/write heads for each disk drive
HITACHI LTD61 citations96
US5313617AMay 17, 1994
Multi-disc optical data storage system for use with a host computer for emulating a magnetic disc device
HITACHI LTD61 citations96
US7330950B2Feb 12, 2008
Storage device
HITACHI LTD31 citations93
US7013372B2Mar 14, 2006
Method for controlling information processing system, information processing system and information processing program
HITACHI LTD31 citations93
US6813683B2Nov 2, 2004
Method and apparatus for copying data from a main site to a remote site
HITACHI LTD24 citations93
US6966001B2Nov 15, 2005
Computing system and data decryption method and computer system with remote copy facility
HITACHI LTD36 citations92
US5694576ADec 2, 1997
Cache control by adding record identification information to partial write request
HITACHI LTD21 citations92
US5497472AMar 5, 1996
Cache control method and apparatus for storing data in a cache memory and for indicating completion of a write request irrespective of whether a record to be accessed exists in an external storage unit
HITACHI LTD26 citations92
US5410666AApr 25, 1995
On-line dumping system and disk sub system
HITACHI LTD20 citations92
US4908793AMar 13, 1990
Storage apparatus including a semiconductor memory and a disk drive
HITACHI LTD50 citations92
US5243479ASep 7, 1993
Mounting structure for information recording and reproducing apparatus
HITACHI LTD33 citations91
US7590664B2Sep 15, 2009
Storage system and storage system data migration method
HITACHI LTD32 citations89
US7849278B2Dec 7, 2010
Logical partition conversion for migration between storage units
HITACHI LTD9 citations84
US7730275B2Jun 1, 2010
Information processing system and management device for managing relocation of data based on a change in the characteristics of the data over time
HITACHI LTD9 citations84
US7716419B2May 11, 2010
Storage system and load balancing method thereof
HITACHI LTD8 citations84
US7213115B2May 1, 2007
Storage system
HITACHI LTD13 citations84
US7475131B2Jan 6, 2009
Network topology display method, management server, and computer program product
HITACHI LTD12 citations83
US7426624B2Sep 16, 2008
Storage management computer program product and grouping method for storage groups
HITACHI LTD11 citations82
US7925851B2Apr 12, 2011
Storage device
HITACHI LTD6 citations74
US7502904B2Mar 10, 2009
Information processing system and management device for managing relocation of data based on a change in the characteristics of the data over time
HITACHI LTD7 citations74
US7305533B2Dec 4, 2007
Storage system
HITACHI LTD6 citations74
US7167902B1Jan 23, 2007
Disk subsystems and their integrated system
HITACHI LTD7 citations74
US6085286AJul 4, 2000
Cache control method and apparatus
HITACHI LTD6 citations74
US5606684AFeb 25, 1997
On-line dumping system and disk sub-system
HITACHI LTD14 citations73
US7930506B2Apr 19, 2011
Information processing system and management device for managing relocation of data based on a change in the characteristics of the data over time
HITACHI LTD2 citations63
US7373390B2May 13, 2008
Disk subsystems and their integrated system
HITACHI LTD3 citations63
US7130959B2Oct 31, 2006
Subsystems and an integrated system of these subsystems
HITACHI LTD2 citations63
US5187778AFeb 16, 1993
Buffered disk unit and method of transferring data therein
HITACHI LTD5 citations62
US7082496B2Jul 25, 2006
Cache control method and apparatus
HITACHI LTD0 citations52