News Column

Researchers Submit Patent Application, "SATA Data Appliance for Providing SATA Hosts with Access to a Configurable Number of SATA Drives Residing in...

June 19, 2014



Researchers Submit Patent Application, "SATA Data Appliance for Providing SATA Hosts with Access to a Configurable Number of SATA Drives Residing in a SAS Topology", for Approval

By a News Reporter-Staff News Editor at Politics & Government Week -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventor Pinglikar, Vidyadhar C. (Pune, IN), filed on November 28, 2012, was made available online on June 5, 2014.

The patent's assignee is Lsi Corporation.

News editors obtained the following quote from the background information supplied by the inventors: "Serial AT Attachment (SATA) is a computer bus interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives. Currently if a SATA host needs to access multiple SATA drives, it is done through a port multiplier which has a limitation of sixteen physical SATA drives and this is the maximum number of physical SATA drives which can be accessed by a legacy port multiplier aware SATA host. On the other hand, addressing schemes such as 48-bit Logical Block Addressing (LBA) with 512 byte sector size is 144 PiB (pebibyte). Since the maximum available size for a physical SATA drive is far less in capacity than 144 PiB, a large number of physical SATA drives may need to be group together. However, there is no efficient mechanism available to group the multiple physical SATA drives into one logical SATA drive which can be seen by the SATA host through a port multiplier.

"Therein lies the need to provide a method and system to enable access of large number of SATA drives in a SAS topology to SATA hosts/initiators without the aforementioned shortcomings."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventor's summary information for this patent application: "Accordingly, an embodiment of the present disclosure is directed to an apparatus for providing a SATA host with access to multiple SATA drives. The apparatus may include: an emulated port multiplier for presenting at least one logical drive to the SATA host; a mapping module for maintaining a mapping between the at least one logical drive and a plurality of physical SATA drives, wherein the plurality of physical SATA drives reside in a SAS topology; and a SATA/STP bridge for providing an interface between the SATA host and the SAS topology, the SATA/STP bridge configured to function as a SATA target to communicate with the SATA host and to function as a STP initiator to communicate with the plurality of physical SATA drives in the SAS topology.

"A further embodiment of the present disclosure is directed to a method for providing a SATA host with access to multiple SATA drives. The , the method comprising: presenting at least one logical drive to the SATA host; maintaining a mapping between the at least one logical drive and a plurality of physical SATA drives, wherein the plurality of physical SATA drives reside in a SAS topology; and providing an interface between the SATA host and the SAS topology, the interface configured to function as a SATA target to communicate with the SATA host and to function as a STP initiator to communicate with the plurality of physical SATA drives in the SAS topology.

"An additional embodiment of the present disclosure is directed to a system. The system may include: at least one SATA host, a plurality of physical SATA drives residing in a SAS topology, and a SATA data appliance for providing the at least one SATA host with access to the plurality of SATA drives. The SATA data appliance may further include: an emulated port multiplier for presenting at least one logical drive to the at least one SATA host; a mapping module for maintaining a mapping between the at least one logical drive and the plurality of physical SATA drives in the SAS topology; and a SATA/STP bridge for providing an interface between the at least one SATA host and the SAS topology, the SATA/STP bridge configured to function as a SATA target to communicate with the at least one SATA host and to function as a STP initiator to communicate with the plurality of physical SATA drives in the SAS topology.

"It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not necessarily restrictive of the invention as claimed. The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the general description, serve to explain the principles of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

"The numerous advantages of the present invention may be better understood by those skilled in the art by reference to the accompanying figures in which:

"FIG. 1 is a block diagram illustrating an exemplary topology that utilizes a SATA Data Appliance in accordance with the present disclosure;

"FIG. 2 is a block diagram illustrating one embodiment of the SATA Data Appliance; and

"FIG. 3 is a flow diagram illustrating a method for providing a SATA host with access to multiple SATA drives in accordance with the present disclosure."

For additional information on this patent application, see: Pinglikar, Vidyadhar C. SATA Data Appliance for Providing SATA Hosts with Access to a Configurable Number of SATA Drives Residing in a SAS Topology. Filed November 28, 2012 and posted June 5, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=540&p=11&f=G&l=50&d=PG01&S1=20140529.PD.&OS=PD/20140529&RS=PD/20140529

Keywords for this news article include: Lsi Corporation.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Politics & Government Week