Emc Corporation

Raymond Angelone

Philippe Armangau

Milena Bergant

Jean-Pierre Bono

Uday K Gupta

Uresh K Vahalia

Stephen A Fridella

Fernando Oliveira

Rossen P Dimitrov

Patrick Eaton

Suchitra Raman

Ritesh Shukla

Hongmei Wang

Eric Duen

Karunaker Chinthapatla

Norman Kevin Elrod

Daniel F Ozone

Vinh Herring Phan

Ajay S Potnis

Rossen Dimitrov

Accessing data file objects includes providing a file system interface on a client, where the file system interface allows an application running on the client to make file system calls to access the data file objects. A Web Services interface may also be provided on the client, where the Web Services interface allows an application to access file objects using the Web Services at the same time that file objects are being accessed through the file system interface. The Web Services interface may be a SOAP interface and/or a REST interface. Accessing data file objects may also include providing a direct file object interface on the client, where the direct file object interface allows an application to directly access file objects at the same time that file objects are being accessed using the Web Services interface and using the file system interface.

Simultaneously accessing file objects through web services and file services

The capacity of a data storage management system may be increased with disclosed methods and systems. One method may increase the capacity of a data storage management system that polls a plurality of monitored elements in a data storage environment. The method includes creating a flag for a poll request and associating a first value for the flag with a first subset of the plurality of monitored elements. The method further includes interpreting a first poll request that includes the first value for the flag as directed to the first subset and interpreting a second poll request that does not include the first value for the flag as not directed to the first subset.

Methods and systems for improved virtual data storage management

Consistent updates are made automatically over a wide-area IP network, concurrently with read-only access to the remote copies. A replication control protocol (RCP) is layered over TCP/IP providing the capability for a remote site to replicate and rebroadcast blocks of the remote copy data to specified groups of destinations, as configured in a routing table. A volume multicast layer over RCP provides for multicasting to specified volume extents of the blocks. The blocks are copied at the logical level, so that it does not matter what physical structure is used for storing the remote copies. Save volumes buffer the remote copy data transmitted between the primary or secondary file system volume and the IP network, in order to ensure independence between the replication process, the IP transport method, and the primary file system being replicated.

Replication of remote copy data for internet protocol (IP) transmission

A file server maintains a production file system supported by a clone volume, and multiple snapshot file systems supported by respective save volumes in a snapshot queue. Before a data block is modified for the first time after creation of the youngest snapshot, the data block is copied from the clone volume to the save volume of the youngest snapshot. A bit map indicates the blocks that have already been copied, and a block map shows the save block address for each corresponding clone block address. When a new snapshot is created, the bit and block maps are converted to a hash index that is kept linked to the save volume of what had been the youngest snapshot. When other than the oldest snapshot file system is deleted, the respective save volume is retained as a hidden object until it becomes the oldest save volume.

Organization of multiple snapshot copies in a data storage system

Growing community of inventors

Norfolk, MA, United States of America

Raymond Angelone