Emc IP Holding Company LLC

Emc Corporation

Thinkanalytics

John Duncan Bankier

Ronald Brown

Fei Long

Dylan Simon

Philip C Love

Srinivas Aji

Zexian Liao

Xianfeng Wang

Peter Docherty

Jerremy Holland

Alan Ryman

Jie Yu

Mohamed E Dekhil

Gordon McIntyre

Yuan Luo

Phillip W Love

Yue Qian

John Cowan

Stuart MacNeil

Eric McCall

Rongrong Shi

David John Brown

Andrew Craig Brind

William Wallace

John Michael Gilchrist

John Dominic Burns

Timothy Simon Jones

Kristy Irene Brown

Charles Allan Beck

A method, computer program product, and computing system for establishing a first file system protocol connection between a first storage system and a second storage system. A security descriptor of one or more electronic files on the first storage system may be queried for security-related information using the first file system protocol connection. Security-related information associated with a first file system protocol and security-related information associated with a second file system protocol may be migrated from the first storage system to the second storage system.

Multi-protocol migration system and method

A method, computer program product, and computer system for creating, by a computing device, a first directory entry with a name using a majority protocol, wherein the creation may be done on a source side for a multi-protocol delta copy migration session. Minority protocol name information associated with the first directory entry using the majority protocol may be relayed to a destination side for the multi-protocol delta copy migration session, wherein the minority protocol name information is cached on the destination side. A second directory entry with the name using the majority protocol for the multi-protocol delta copy migration session may be created on the destination side. The name of the second directory entry created using the majority protocol may be reset to the minority protocol name created using the minority protocol name information cached on the destination side.

System and method for preserving a minority protocol name in a multiple protocol migration

A target data storage system performing a migration operation also responds to client requests by creating and maintaining a metadata cache for caching attributes of a user file as obtained from a source data storage system. A read-type client request is processed by (1) determining whether the metadata cache stores current attribute values, (2) if so, then satisfying the client request using the current values in the metadata cache, and (3) otherwise obtaining current attribute values from the source data storage system and satisfying the client request using the obtained current attribute values, and storing the current values in the metadata cache to be available for use in processing subsequent read-type client requests. A write-type client request is processed forwarding modified attribute values from the client request to the source data storage system for storage therein.

Data storage system with transparent presentation of file attributes during file system migration

A user I/O operation is processed in a file system of a target data storage system (DSS) performing a file system migration. The target DSS assesses a migration state of a user file of the user I/O operation, including (1) determining whether a metadata file storing migration state data for the user file has an already recovered record indicating the migration state of the file, (2) if so, then using the already recovered record to assess the migration state of the user file, and (3) otherwise (a) initiating an on-demand recovery to obtain an on-demand record for the user file, and (b) using the on-demand recovered record to assess the migration state. If the migration state indicates that the file has not yet been migrated, then the user I/O operation is redirected to a separate source DSS, and otherwise the user I/O operation is completed locally at the target DSS.

Data storage system with on-demand recovery of file import metadata during file system migration

The present invention is a method for performing a multi-protocol scan of a NAS system by a storage virtualization system to create a multi-protocol file index. Current NAS systems may utilize two protocols, CIFS and NFS. Storage virtualization systems migrate, redirect or synchronize data between a primary and a secondary NAS. Present storage virtualization systems are designed to work with NFS or CIFS systems, but not both. The present invention enables a storage virtualization system to simultaneously or near-simultaneously operate using NFS and CIFS protocols. The present invention also provides for a multi-protocol scan of a NAS device to ensure that all data files and data file attributes are recognized and preserved during storage virtualization.

Multi-protocol data object scanning by a storage virtualization system

A system and method provides for querying and setting file attributes between Network File System and Common Internet File System network attached storage systems. Aspects of the present invention may be performed by a storage virtualization system that acts as an intermediary between one or more network attached storage systems. By querying and setting file attributes, files may be migrated between network attached storage systems while keeping the file attributes and primary location of the file contents intact. In addition, the present invention provides an additional aspect of ensuring that file names of multi-protocol files are compatible across every protocol.

Network accessed storage files system query/set proxy service for a storage virtualization system

The present invention is a system and method for reconciling results returned from a multi-protocol scan of a NAS system. Certain NAS systems use different protocols. Some may use the NFS protocol, whereas others may use the CIFS protocol. A scan of the NAS may therefore produce two data object names for a single data object. When a storage virtualization system is tasked with acting as an intermediary between the client and the NAS, these two data object names will cause errors during data migration, synchronization or redirection. The present invention is a method for using the results of a multi-protocol scan of the NAS in order to reconcile data object names that may present differently depending on the protocol applied.

System and method for reconciling multi-protocol scan results by a storage virtualization system

Electronic commerce transaction messages are processed over a network between a client and a server in a highly reliable fashion by establishing a secure or un-secure communications connection between the network client and the network server at an electronic transaction assurance (eTA) system, which is located in a communication path between the network client and the network server. The transaction type is identified in the message and the progress of the transaction is tracked using transaction models. Any failure in the back-end server system or in the network connections is detected and the failure is recovered from using an outcome determination technique. The failure of a node within the eTA system is masked from the network client by formulating an appropriate response and sending it back to the client such that the network client and network server that were using the selected node do not see any interruption in their communications.

Highly available transaction failure detection and recovery for electronic commerce transactions

A computer-based method and apparatus for knowledge discovery from databases. The disclosed method involves the user creation of a project plan comprising a plurality of operational components adapted to cooperatively extract desired information from a database. In one embodiment, the project plan is created within a graphical user interface and consists of objects representing the various functional components of the overall plan interconnected by links representing the flow of data from the data source to a data sink. Data visualization components may be inserted essentially anywhere in the project plan. One or more data links in the project plan may be designated as caching links which maintain copies of the data flowing across them, such that the cached data is available to other components in the project plan. In one embodiment, compression technology is applied to reduce the overall size of the database.

Method and apparatus for knowledge discovery in databases

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Glasgow, United Kingdom

John Duncan Bankier