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公开(公告)号：JP2004038928A
公开(公告)日：2004-02-05
申请号：JP2003075430
申请日：2003-03-19
Applicant: Network Appliance Inc , ネットワーク・アプライアンス・インコーポレイテッド
Inventor： FEDERWISCH MICHAEL L , OWARA SHANE S , MANLEY STEPHEN L , KLEIMAN STEVEN R
CPC classification number: G06F11/2074 , G06F11/1451 , G06F11/2066 , G06F17/30144 , G06F17/30212
Abstract: PROBLEM TO BE SOLVED: To enhance versatility and utility of a snapshot duplication means. SOLUTION: A system and a method are for performing remote asynchronous duplication, namely, mirroring of change of source file system snapshots to a duplicated file system at a destination by identifying a block changed by difference of block volume numbers identified in the case of scanning a logical file block index of each snapshot by utilizing scan (by a scanner) of blocks constituting two versions of snapshots of the source file system. A tree of the block regarding the file is checked, a pointer without changes between versions is bypassed and proceeded downward and changes of hierarchy of trees are identified and the changes are transmitted to a destination mirror, namely, a duplicated snapshot. At the destination, the destination snapshot is updated by using source change. Every deleted or changed inode already existing on the destination is transferred to a temporary directory, namely, "momentary" directory and when it is reused, it is re-linked with the reconstructed duplicated snapshot directory. COPYRIGHT: (C)2004,JPO
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公开(公告)号：DE60334752D1
公开(公告)日：2010-12-16
申请号：DE60334752
申请日：2003-03-19
Applicant: NETWORK APPLIANCE INC
Inventor： FEDERWISCH MICHAEL L , MANLEY STEPHEN L , OWARA SHANE S , KLEIMAN STEVEN R
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公开(公告)号：AT487185T
公开(公告)日：2010-11-15
申请号：AT03251702
申请日：2003-03-19
Applicant: NETWORK APPLIANCE INC
Inventor： FEDERWISCH MICHAEL L , MANLEY STEPHEN L , OWARA SHANE S , KLEIMAN STEVEN R
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