Chitrank Seshadri

Title: Chitrank Seshadri and Multipath Storage I/O

Introduction

Chitrank Seshadri is an inventor associated with San Jose, California, and Sun Microsystems, Inc. His patent work addresses multipath input/output (I/O), a technique for managing multiple connections between computer systems and storage devices.

Latest Patents

The provided information identifies one patent associated with Seshadri: “Virtual Host Controller Interface with Multipath Input/Output.” The invention describes a processor-based system in which a virtual host controller interface (vHCI) sits between a common architecture layer and physical host controller interfaces, such as host bus adapters connected to storage devices in a storage area network.

In the described architecture, target drivers send I/O requests through the common architecture layer to the vHCI layer, which forwards them to the appropriate host bus adapters. A multipathing driver interface (MPXIO) beneath the vHCI layer supplies target-device path information. This arrangement avoids requiring multipathing target drivers above the common architecture layer. The patent also describes failover modules that provide the vHCI layer with protocol information for handling a failed path.

Career Highlights

Seshadri’s listed patent reflects work on storage-system architecture and the coordination of I/O across multiple paths. The design aims to support path selection and failover while keeping multipathing functionality beneath the common architecture layer. The supplied information lists 1 patent for him.

Collaborations

The provided information names Seetharaman Padmanabhan and John H. Danielson as Seshadri’s coworkers. It does not specify their roles in the patent or describe particular collaborative contributions.

Conclusion

Chitrank Seshadri’s identified invention focuses on organizing multipath storage I/O through a virtual host controller interface, with path information and failover support designed into the system architecture.