公开(公告)号：EP2542985A1

公开(公告)日：2013-01-09

申请号：EP10713025.4

申请日：2010-03-01

申请人： Hitachi, Ltd.

发明人： SUTOH, Atsushi ,  TAKATA, Masanori ,  KAMEI, Hitoshi ,  TAKAOKA, Nobumitsu ,  NAKANO, Takahiro ,  SHIMADA, Akio

IPC分类号： G06F17/30

CPC分类号： G06F17/3012 ,  G06F17/30079 ,  G06F17/30082 ,  G06F17/30221

摘要： Time required for a file server to determine files to be migrated from a first storage region to a second storage region is reduced. A file service system coupled to the storage system for providing a first storage region and a second storage region stores identifiers of files that have been accessed by a client, in accessed file identifier information and determines the files to be migrated from the first storage region to the second storage region based on metadata of the files stored in the first storage region and the accessed file identifier information.

公开(公告)号：EP2652588A1

公开(公告)日：2013-10-23

申请号：EP11730451.9

申请日：2011-04-08

申请人： Hitachi, Ltd.

发明人： TAKATA, Masanori ,  ISHII, Yohsuke ,  ESAKA, Tomonori ,  SUTOH, Atsushi

IPC分类号： G06F3/06 ,  G06F17/30

CPC分类号： G06F3/0608 ,  G06F3/0611 ,  G06F3/0649 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0685 ,  G06F11/1448 ,  G06F17/30174

摘要： The file synchronization processing among sites which can reduce the response time is realized. By the CAS device creating a list of at least a part of the file groups which the first sub-computer system archived or backed up to the data center as an update list and transferring the update list to the second sub-computer system, the second sub-computer system determines whether the file is valid or not by using the update list (See Fig. 2).