公开(公告)号：US11182344B2

公开(公告)日：2021-11-23

申请号：US15068988

申请日：2016-03-14

Applicant: VMware, Inc.

Inventor： Edward J Goggin ,  Sandeep Rangaswamy ,  Kiran Joshi ,  Srinath Premachandran ,  Gopala Suryanarayana ,  Radu Berinde ,  Wenguang Wang ,  Jorge Guerra Delgado ,  Jin Zhang ,  Radhika Vullikanti

IPC: G06F16/00 ,  G06F16/174 ,  H04L29/08

Abstract: In accordance with the present disclosure, files may be deduplicated in a distributed storage system having a plurality of storage volumes. A uniqueness metric for each file may indicate a degree of deduplication of the respective data files in the given storage volume. The uniqueness metric may be used to identify files for rebalancing in the distributed storage system. The uniqueness metric may be efficiently calculated with enough accuracy using a sampling methodology.

公开(公告)号：US09977599B2

公开(公告)日：2018-05-22

申请号：US14993827

申请日：2016-01-12

Applicant: VMware, Inc.

Inventor： Jorge Guerra Delgado ,  Kiran Joshi ,  Edward J Goggin ,  Srinath Premachandran ,  Sandeep Rangaswamy

IPC: G06F3/06

CPC classification number: G06F3/0608 ,  G06F3/0641 ,  G06F3/0665 ,  G06F3/0683

Abstract: Techniques for implementing data deduplication in conjunction with thick and thin provisioning of storage objects are provided. In one embodiment, a system can receive a write request directed to a storage object stored by the system and can determine whether the storage object is a thin or thick object. If the storage object is a thin object, the system can calculate a usage value by adding a total amount of physical storage space used in the system to a total amount of storage space reserved for thick storage objects in the system and further subtracting a total amount of reserved storage space for the thick storage objects that are filled with unique data. The system can then reject the write request if the usage value is not less than the total storage capacity of the system.