News Column

Patent Issued for Serial Attached SCSI Expander Management and Alarm Reporting Using SNMP

July 23, 2014



By a News Reporter-Staff News Editor at Journal of Engineering -- From Alexandria, Virginia, VerticalNews journalists report that a patent by the inventors Khanvilkar, Saurabh Balkrishna (Pune, IN); Joshi, Mandar D. (Pune, IN); Aggarwal, Kaushalender (Pune, IN), filed on March 16, 2011, was published online on July 8, 2014.

The patent's assignee for patent number 8775609 is LSI Corporation (San Jose, CA).

News editors obtained the following quote from the background information supplied by the inventors: "Mass storage systems continue to provide increased storage capacities to satisfy user demands. Photo and movie storage, and photo and movie sharing are examples of applications that fuel the growth in demand for larger and larger storage systems.

"A solution to these increasing demands is the use of arrays of multiple inexpensive disks. These arrays may be configured in ways that provide redundancy and error recovery without any loss of data. These arrays may also be configured to increase read and write performance by allowing data to be read or written simultaneously to multiple disk drives. These arrays may also be configured to allow 'hot-swapping' which allows a failed disk to be replaced without interrupting the storage services of the array. Whether or not any redundancy is provided, these arrays are commonly referred to as redundant arrays of independent disks (or more commonly by the acronym RAID). The 1987 publication by David A. Patterson, et al., from the University of California at Berkeley titled 'A Case for Redundant Arrays of Inexpensive Disks (RAID)' discusses the fundamental concepts and levels of RAID technology.

"RAID storage systems typically utilize a controller that shields the user or host system from the details of managing the storage array. The controller makes the storage array appear as one or more disk drives (or volumes). This is accomplished in spite of the fact that the data (or redundant data) for a particular volume may be spread across multiple disk drives."

As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventors' summary information for this patent: "An embodiment of the invention may therefore comprise a Serial Attached SCSI (SAS) expander, comprising: an Ethernet interface configured to communicate using TCP/IP protocol, the SAS expander configured to send an indicator of an alarm condition using Simple Network Management Protocol (SNMP), said indicator of said alarm condition to be sent via said Ethernet interface; and, at least one SAS interface.

"An embodiment of the invention may therefore further comprise a method of reporting an alarm condition associated with a Serial Attached SCSI (SAS) expander, comprising: receiving an alarm indicator; and, sending an indicator of said alarm using Simple Network Management Protocol (SNMP), said indicator of said alarm condition to be sent via an Ethernet interface of said SAS expander."

For additional information on this patent, see: Khanvilkar, Saurabh Balkrishna; Joshi, Mandar D.; Aggarwal, Kaushalender. Serial Attached SCSI Expander Management and Alarm Reporting Using SNMP. U.S. Patent Number 8775609, filed March 16, 2011, and published online on July 8, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8775609.PN.&OS=PN/8775609RS=PN/8775609

Keywords for this news article include: Ethernet, Networks, LSI Corporation.

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Source: Journal of Engineering


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