Patent ID: 6934799
Filing Date: 2005-08-23
Classification: G06F,H04L

Abstract:
1. A method comprising accessing virtual iSCSI storage, including the steps of defining at least one physical logical unit number (LUN) on a physical storage device having an device IP address; associating a unique TCP port number with each said at least one physical LUN; replacing a first LUN identifier specified in said iSCSI command with a second LUN identifier associated with said given TCP port number; establishing a unique IP address at which a virtual LUN is accessed from a host; identifying a block TCP port number with each block range of said virtual LUN; mapping a SCSI command to one or more iSCSI/TCP connections having said unique IP address and the block TCP port number identified with said each block range referenced by said SCSI command; and substituting said unique IP address and said block TCP port number with said device IP address and said given TCP port number on packets between said host and said storage devices, wherein said step of associating results in forming TCP/iSCSI connections between the host and one or more physical LUNs without terminating said TCP/iSCSI connection at an intermediate gateway between said host and said device.