1
Michael T Massa, David A Dion, Rajsekhar Das, Rushabh Doshi, David B Lomet, Gor V Nishanov, Philip A Bernstein, Rod N Gamache, Rohit Jain, Sunita V Shrivastava: Consistent cluster operational data in a server cluster using a quorum of replicas. L Alan Collins, Collins & Collins Incorporated, August 10, 2010: US07774469 (49 worldwide citation)

A method and system for increasing server cluster availability by requiring at a minimum only one node and a quorum replica set of replica members to form and operate a cluster. Replica members maintain cluster operational data. A cluster operates when one node possesses a majority of replica member ...


2
Octavian T Ureche, Scott A Brender, Elden Theodore Christensen, Rajsekhar Das: Full volume encryption in a clustered environment. Microsoft Corporation, April 2, 2013: US08411863 (16 worldwide citation)

Full volume encryption can be applied to volumes in a clustering environment. To simplify the maintenance of keys relevant to such encrypted volumes, a cluster key table construct can be utilized, where each entry of the cluster key table corresponds to an encrypted volume and comprises an identific ...


3
Andrea D Amato, Rajeev Y Nagar, Gor Nishanov, Rajsekhar Das, Gregorio Maeso: Cluster shared volumes. Microsoft Corporation, November 23, 2010: US07840730 (7 worldwide citation)

Described is a technology by which a storage volume is shared by cluster nodes of a server cluster. In one implementation, each node includes a redirector that provides shared access to the volume from that node. The redirector routes file system metadata requests from applications and the like thro ...


4
Michael T Massa, David A Dion, Rajsekhar Das, Rushabh A Doshi, David B Lomet, Gor N Nishanov, Philip A Bernstein, Rod N Gamache, Rohit Jain, Sunita Shrivastava: Consistent cluster operational data in a server cluster using a quorum of replicas. Microsoft Corporation, Henry Gabryjelski, Kate Drakos, Micky Minhas, September 30, 2014: US08850007 (5 worldwide citation)

A method and system for increasing server cluster availability by requiring at a minimum only one node and a quorum replica set of replica members to form and operate a cluster. Replica members maintain cluster operational data. A cluster operates when one node possesses a majority of replica member ...


5
Kurt Lawrence Friedrich, David Allen Dion, Rajsekhar Das, Gregory I Thiel: Quorum establishment based on a vote from a voting device. Microsoft Corporation, January 5, 2010: US07644305 (1 worldwide citation)

A cluster system including as few as two cluster nodes and a plurality of links, each one of the plurality of links coupling one of the cluster nodes to a voting device wherein a single surviving cluster node obtain a vote from the voting device. A method of establishing quorum in a cluster system i ...


6
Michael T Massa, David A Dion, Rajsekhar Das, Rushabh A Doshi, David B Lomet, Gor N Nishanov, Philip A Bernstein, Rod N Gamache, Rohit Jain, Sunita Shrivastava: Consistent cluster operational data in a server cluster using a quorum of replicas. Microsoft Corporation, Henry Gabryjelski, Kate Drakos, Micky Minhas, September 30, 2014: US08850018

A method and system for increasing server cluster availability by requiring at a minimum only one node and a quorum replica set of replica members to form and operate a cluster. Replica members maintain cluster operational data. A cluster operates when one node possesses a majority of replica member ...


7
Neal Robert Christiansen, Daniel Chan, Rajsekhar Das, Juan Lee Pang, Malcolm James Smith, Andrew Herron: File system operation on multi-tiered volume. Microsoft Technology Licensing, Sunah Lee, Raghu Chinagudabha, Micky Minhas, August 25, 2015: US09116904

A file system that operates on an underlying volume that has multiple tiers, each tier including a particular trait set. Upon creating or otherwise identifying a file system namespace (such as a directory or file) that is in a volume or that is to be included within the volume, a storage trait set t ...


8
Rajsekhar Das, David A Dion: Resource arbitration for shared-write access via persistent reservation. Microsoft Corporation, Henry Gabryjelski, Kate Drakos, Micky Minhas, May 6, 2014: US08719473

Described is a technology by which an owner node in a server cluster maintains ownership of a storage mechanism through a persistent reservation mechanism, while allowing non-owning nodes read and write access to the storage mechanism. An owner node writes a reservation key to a registration table a ...


9
Thothathri Vanamamalai, Karan Mehra, Paul Adrian Oltean, Rajsekhar Das, Norbert Kusters: Sharing volume data via shadow copies using differential areas. Microsoft Corporation, January 25, 2011: US07877553

Aspects of the subject matter described herein relate to sharing volume data via shadow copies. In aspects, an active computer creates a shadow copy of a volume. The shadow copy is exposed to one or more passive computers that may read but not write to the volume. A passive computer may obtain data ...


10
Vladimir Petter, Vinod R Shankar, Andrea D Amato, Rajsekhar Das: Volumes and file system in cluster shared volumes. Microsoft Corporation, Workman Nydegger, June 11, 2013: US08463762

The present invention extends to methods, systems, and computer program products for sharing volumes between clustered nodes. Embodiments of the invention include a Clustered Shared Volume File System (CsvFs) that appears to clients as a local file system. The CsvFs communicates to a node where a di ...