Lsi Corporation

Netapp, Inc.

Avago Technologies General IP (singapore) Pte. Ltd.

Mandar Dattatraya Joshi

Saurabh Balkrishna Khanvilkar

Kaushalender Aggarwal

Vidyadhar Pinglikar

Shankar More

Prasad Ramchandra Kadam

Rakesh Verma

A server application is executed on an active device within the SAS domain, the active device connected to a remote client via an Ethernet connection. At least one command is received from the remote client via the Ethernet connection. An Ethernet frame of the at least one command is converted to at least one SAS frame. The at least one SAS frame is routed via a SAS data path to a SAS target device connected to the active device, the SAS target device corresponding to a field of the command.

SAS domain management and SSP data handling over ethernet

Methods and structure for emulating wide ports at an expander are provided. An exemplary system includes a Serial Attached Small Computer System Interface (SAS) expander. The expander includes a plurality of physical links, and a controller. The controller is able to identify a physical link coupled with a device, to generate a plurality of virtual physical links that are configured as a virtual wide port coupled with the device, and to present the virtual wide port at the expander in place of the physical link.

Wide port emulation at serial attached SCSI expanders using virtual physical links

Methods and structure are provided for enhancing zone configuration processes in a Serial Attached SCSI (SAS) architecture. The method includes embedding, at a SAS initiator, a ZONE UNLOCK request within a Serial Management Protocol (SMP) ZONE ACTIVATE command. The method also comprises transmitting the SMP ZONE ACTIVATE command to a SAS expander, and receiving, at the SAS expander, the SMP ZONE ACTIVATE command. Further, the method includes detecting, at the SAS expander, the ZONE UNLOCK request within the SMP ZONE ACTIVATE COMMAND. Additionally, the method includes copying, at the SAS expander, shadow SAS zoning data from a memory of the expander to current SAS zoning data at the memory of the expander responsive to acquiring the SMP ZONE ACTIVATE command. The method also comprises unlocking the SAS expander responsive to extracting the ZONE UNLOCK request from the SMP ZONE ACTIVATE command.

Methods and structure enhancing zone configuration in a serial attached SCSI environment

Methods and structure are provided for implementing security features in SCSI Enclosure Services (SES) systems. The system comprises an SES device server, which includes a frontend interface, control unit, and backend interface. The frontend interface is operable to receive SES commands generated by Small Computer System Interface (SCSI) devices, and the backend interface is operable to manage operations of at least one peripheral device communicatively coupled with the SES device server based on received SES commands. The control unit is operable to determine whether a SCSI initiator that generated an SES command is an authorized device. The control unit is further operable to perform the SES command in response to determining that the SCSI initiator is an authorized device, and is further operable to reject the SES command in response to determining that the SCSI initiator is not an authorized device.

Methods and structure for implementing security in systems that utilize small computer system interface enclosure services

Disclosed is a Serial Attached SCSI (SAS) expander. The SAS expander is configured with an Ethernet interface and at least one SAS interface. The Ethernet interface is configured to communicate using TCP/IP protocol. The SAS expander is also configured to send an indicator of an alarm condition using Simple Network Management Protocol (SNMP). The indicator of the alarm condition is sent via the Ethernet interface. Configuration functions and status reads or writes of values stored in the SAS expander, or devices coupled to it may also be exchanged using SNMP.

Serial attached SCSI expander management and alarm reporting using SNMP

Methods and structure are provided for managing a Serial Attached SCSI (SAS) domain via Universal Serial Bus (USB) communications. The system comprises a SAS expander. The SAS expander comprises a plurality of physical links, a USB interface, and a control unit. The control unit is operable to receive USB packets via the USB interface, to determine SAS management information based upon the received USB packets, and to alter a configuration of the SAS domain based upon the SAS management information determined from the USB packets.

Methods and structure for configuring a Serial Attached SCSI domain via a Universal Serial Bus interface of a Serial Attached SCSI expander

A storage system comprising: a SCSI initiator being configured for receiving a data request and providing a SMP request corresponding to the data request, the SCSI initiator being further configured for encapsulating the SMP request into a first SCSI command; a SCSI target being configured for receiving the first SCSI command, the SCSI target being further configured for recognizing encapsulation of the SMP request and obtaining the SMP request from the first SCSI command; and an SMP target being configured for processing the SMP request and providing an SMP response to the SCSI target. The SCSI target being further configured for acknowledging the SCSI initiator upon reception of the SMP response; and the SCSI initiator being further configured for sending a second SCSI command to the SCSI target to retrieve the SMP response.

SAS SMP tunneling using SCSI commands

The present invention is directed to a method for implementing firmware in an expander system in such a way that a single hardware component (ex.&#x2014;a chip) of the expander system may be presented as multiple virtual expanders to both upstream connected devices (ex.&#x2014;HBAs) as well as downstream connected devices (ex.&#x2014;disk drives).

Growing community of inventors

Pune, India

Mandar Dattatraya Joshi