Ciphermax, Incorporated

Emc Corporation

Maxxan Systems, Incorporated

Hawkins Yao

Richard Gunlock

Sompong Paul Olarig

Michael L Witkowski

Robert Tower Frey

Chao Zhang

Poulo Kuriakose

Rajesh Ananthanarayanan

Mike Witkowski

Ram Ganesan Iyer

Po-Wei Tan

Cheh-Suei Yang

Lih-Sheng Chiou

Systems and methods in accordance with various disclosed embodiments can manage a mirrored virtual target to synchronize the members of the virtual target and/or to verify that the members of the virtual target are synchronized. In one embodiment, a mirrored virtual target is synchronized by first provisioning at least one first internal virtual logical unit (IVLU) corresponding to at least one destination target of the mirrored target and a second IVLU corresponding to a source target of the mirrored target. A write command is first issued, via one or more internal virtual logical units, to each of the destination target members of the mirrored target. When each destination target is available to receive data, as evidenced by a returned transfer ready signal, a read command is provided to the source target via the second internal virtual logical unit. In this manner, a data path between the source and destination targets is established prior to reading data from the source target. Accordingly, the data can be read from the source target, converted to write data, and routed to the destination targets at line speed without buffering of the data. A similar process is provided to verify that the members of a mirrored target are synchronized. In one embodiment, a system and method is provided to manage incoming commands for the mirrored target while synchronizing or verifying synchronization of the mirrored target. Incoming commands can be queued as they are received and provided to the mirrored target when pending synchronization or verification commands are completed.

Online initial mirror synchronization and mirror synchronization verification in storage area networks

A method of linking at least two network switches is disclosed, wherein each network switch switches data traffic of a plurality of devices, through a plurality of couplings. The method comprises the steps of generating a data stream including an identifier to be sent from a first to a second network switch, generating a number identifying one of the couplings from the identifier, and using the identified coupling for transfer of the data stream.

System and method for linking a plurality of network switches

Network processors controlled by software are used to implement the FC-1 and FC-2 layer functions. Each Network Processor comprises a fabric processor, an executive processor, channel processors and associated serial data processors. Special ASICs are not required since all of the Fiber Channel layers may be implementation with the network processors under software control.

Fibre channel implementation using network processors

A cache system and method in accordance with the invention includes a cache near the target devices and another cache at the requesting host side so that the data traffic across the computer network is reduced. A cache updating and invalidation method are described.

Caching system and method for a network storage system

Growing community of inventors

San Jose, CA, United States of America

Hawkins Yao