公开(公告)号：US09952776B1

公开(公告)日：2018-04-24

申请号：US14808238

申请日：2015-07-24

Applicant: EMC Corporation

Inventor： Alesia Tringale ,  Sean Pollard ,  Julie Zhivich ,  Jerome Cartmell

IPC: G06F3/06 ,  G06F13/40 ,  H04L12/26

CPC classification number: G06F3/0611 ,  G06F3/0665 ,  G06F3/0689 ,  G06F13/4022 ,  H04L43/0894

Abstract: Storage node blades in a data storage system utilize queue pairs associated with point-to-point links to perform RDMA transactions with memory components associated with other storage node blades. Higher quality of service queue pairs are used for system message transactions and lower quality of service queue pairs are used for remote direct memory access data. Postings to a relatively higher priority queue pair are reduced when a corresponding relatively lower priority queue pair between the same pair of storage nodes via the same switch is starved of bandwidth. Postings to the relatively higher priority queue pair are increased when bandwidth starvation is remediated.

公开(公告)号：US09753822B1

公开(公告)日：2017-09-05

申请号：US14808369

申请日：2015-07-24

Applicant: EMC CORPORATION

Inventor： Alesia Tringale ,  Sean Pollard ,  Julie Zhivich

IPC: G06F11/00 ,  G06F11/20 ,  G06F11/07 ,  G06F11/14

CPC classification number: G06F11/203 ,  G06F11/0727 ,  G06F11/1423 ,  G06F11/2002 ,  G06F2201/805

Abstract: Individual transport connections within a dual-star fabric connected multi-node storage system are disabled in response to associated failures due to faulty hardware or temporal congestion. Each configured IB transport connection is monitored for viability and, upon failure, removed from the pool of available resource. Following failure restoration the resource is tested to ensure proper functionality and then restored to the pool of resources. Mappings associated with the transport connections are maintained while the connections are disabled.