Advanced Digital Information Corporation

Other

Ironics, Inc.

Mark A DeWilde

Stephen Stone

Gregory Prestas

Terence M Kelleher

Said Rahmani Khezri

Jeffrey S Goldner

There is disclosed a method and architecture for establishing independent, secure, trusted sub-networks within a storage area network (SAN). These virtual private SANs allow secure, managed interconnections between an initiator host and a target storage device or a logical unit number (LUN) indicating a sub-portion of a target storage device. A table of allowable configurations along with a connections database are used to ensure proper, allowable data connections.

Creating virtual private connections between end points across a SAN

The present invention provides a high speed, multi-ported, direct data flow memory architecture that employs memory width and speed greater than system bus width and speed to allow shallow burst depth and reduce other-port latencies, while maintaining multi-port throughput. The inventive system has a data storage device (SDRAM) and a multiplexer connected to the SDRAM. Two or more interfaces or ports are provided with data sourcing controllers respectively connected to the interfaces. A communications bus connects the SDRAM to the data sourcing controllers for facilitating data communications. A FIFO buffer memory is located between the multiplexer and the data sourcing controllers. The need for retries is eliminated and host bus widths are matched to memory data width. Read-ahead algorithms are provided that adapt the larger system bus burst sizes to the smaller memory burst sizes with the ability to cancel unneeded advance requests for data. The total memory bandwidth is greater than that of the sum of the ports, so that the small memory burst size inefficiency does not reduce throughput below target levels. Write data is selectively masked to eliminate the need for read-modify-write cycles. Reads and writes can begin and end on arbitrary byte addresses, regardless of memory or bus widths.

Dynamic adjustment of multiple sequential burst data transfers

Multiport memory architecture with direct data flow

The present invention features a system for cooling a plurality of circuit boards in a high density chassis. The system includes a circuit board enclosure assembly having a number of slots for supporting a plurality of circuit boards. A filter is disposed beneath the circuit board enclosure assembly for filtering air flowing into the circuit board enclosure. The filter also creates air turbulence, and provides a pressure head adjacent the plurality of circuit boards. An air flow is generated by a dual cage type blower that is offset from the circuit board enclosure assembly. The air flow to the circuit boards is at sufficient air pressure and air flow rate to carry heat from the circuit boards. A multi-channel plenum disposed between the dual cage type blower and the circuit board enclosure assembly diffuses and directs the air flow to the circuit board enclosure assembly in a substantially flat profile. The multi-channel plenum individually distributes the air to each of said circuit boards in a substantially equal volume to ensure uniform cooling of each circuit board in the circuit board enclosure assembly, despite an absence of circuit boards in any one of the slots of the circuit board enclosure assembly.

High density circuit board chassis cooling system

The present invention features a circuit board enclosure assembly for housing a power supply and circuit boards in operative juxtaposition. A housing has a power supply access portion comprising an opening in a top portion thereof covered by a lid. An interior portion of the housing supports the power supply and the circuit board cage. The cage has a plurality of slots supporting the circuit boards. The power supply is operatively connected to the plurality of circuit boards, and is pivotably mounted upon the housing by means of a pair of hinges disposed adjacent the power supply access portion. This allows for easy accessing and substantial removal of the power supply from the interior portion of the housing, while maintaining operative connection with the plurality of circuit boards.

Growing community of inventors

Freeville, NY, United States of America

Mark A DeWilde