公开(公告)号：WO2011133440A1

公开(公告)日：2011-10-27

申请号：PCT/US2011/032815

申请日：2011-04-18

Applicant: GREENBYTES, INC.

Inventor： PETROCELLI, Robert

IPC: G06F7/00

CPC classification number: G06F17/3015 ,  G06F3/0601 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/065 ,  G06F3/067

Abstract: A method and system is provided for copying data between two deduplicating storage systems. A list of unique fingerprints is compiled from the data which will be sent. This list is transmitted to the receiving system during a preliminary data exchange called the preamble. The receiving system replies with a second list which contains the unique fingerprints of the data which either needs to be sent or can be omitted. Which list depends on the size of the list where the smaller list is sent for efficiency and lower bandwidth consumption. A reference list of duplicate blocks being sent is retained on the receiving system until the copy operation is complete. This reference list is used to protect blocks on the receiving system by deferring deletions until the incoming hallow block can reference the duplicate block on the receiver to confirm that is on the target system and should not be deleted.

Abstract translation: 提供了一种在两个重复数据删除存储系统之间复制数据的方法和系统。 唯一指纹列表将从要发送的数据中编译。 在被称为前同步码的初步数据交换中，该列表被发送到接收系统。 接收系统用包含需要发送或可以省略的数据的唯一指纹的第二列表进行回复。 哪个列表取决于列表的大小，其中发送较小的列表以提高效率和降低带宽消耗。 正在发送的重复块的参考列表保留在接收系统上，直到复制操作完成。 此参考列表用于通过延迟删除来保护接收系统上的块，直到传入的中间块可以引用接收器上的重复块来确认目标系统上的块并且不应该被删除。

公开(公告)号：WO2011133443A1

公开(公告)日：2011-10-27

申请号：PCT/US2011/032824

申请日：2011-04-18

Applicant: GREENBYTES, INC.

Inventor： PETROCELLI, Robert

IPC: G06F7/00 ,  G06F1/00

CPC classification number: G06F17/3015 ,  G06F3/0601 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/065 ,  G06F3/067

Abstract: A method and system of optimizing the memory usage and performance of data deduplication storage systems includes organizing the metadata of data blocks needed by deduplicating storage systems. A three level hierarchy is used. Level 1 stores the metadata on disk along with the user data. Level 2 uses low latency storage (e.g. RAM and Solid State Disks) to cache the on-disk meta data for faster direct access. Level 3 organizes the fingerprints using a Trie and is entirely resident in RAM. Thus, the search, to determine whether a data block is unique or not and a candidate for transfer, can be more efficiency executed and to ensure that the meta data is transactionally secure.

Abstract translation: 优化重复数据删除存储系统的内存使用和性能的方法和系统包括组织重复数据删除存储系统所需的数据块的元数据。 使用三级层次结构。 级别1将元数据与用户数据一起存储在磁盘上。 级别2使用低延迟存储（例如RAM和固态磁盘）来缓存磁盘上的元数据，以便更快的直接访问。 3级使用Trie组织指纹，完全驻留在RAM中。 因此，用于确定数据块是否唯一的搜索和用于传送的候选者可以更有效地执行并且确保元数据是事务安全的。