Hitachi Data Systems Engineering UK Limited

Lsi Logic Corporation

Lsi Corporation

Ray Brown

Zahra Tabaaloute

James Gibbs

Daniel Picken

Richard Powell

Timothy Warner

Jon Smith

Chris Aston

Joseph Smith

Michael Benson

Mike Benson

The present invention relates to a method and an apparatus for data migration of a first file system in a data storage system comprising a plurality of client computers, a first file system managing unitfor managing the first file system and being connected to the plurality of client computers, and a second file system managing unitfor managing a second file system and being connected to the first file system managing unit, the second file system comprising a plurality of data files and the first file system comprising a plurality of external link objects, each external link object of the first file system being associated with a respective data file of the second file system for enabling client access to the respective data file of the second file system.

Method and apparatus for migration of a virtualized file system, data storage system for migration of a virtualized file system, and file server for use in a data storage system

An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate a data input signal in response to a first control signal and a second control signal. The second circuit may be configured to (i) generate the first control signal and the second control signal and (ii) determine whether the first circuit is coupled to (a) a first logic level circuit when in a first state and (b) an impedance circuit and a second logic level circuit when in a second state.

Multi-bit configuration pins

The present invention may provide a digital memory circuit comprising a plurality of multi-bit registers, a memory circuit interface, and a logic circuit. The memory circuit interface may be configured to access a selected one of the registers. The logic circuit may be coupled to the plurality of multi-bit registers and responsive to data received through the interface for selectively writing a predetermined logic state to at least one first bit of the selected register while leaving at least one second bit in the selected register with an unmodified state.

Read/modify/write registers

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Bracknell, United Kingdom

Ray Brown