Abstract: Embodiments of the present invention provide methods and systems for data movement in data storage systems. For one embodiment, a physical data storage parcel containing a first type of data requiring a first type of processing and a second type of data requiring a second type of processing is created. The first type of data is transferred to a first memory address space via a direct memory access operation and the second type of data is transferred to a second memory address space via the direct memory access operation. For one embodiment, the first type of data and the second type of data are copied to physically distinct data storage mediums. In an alternative embodiment, the first type of data and the second type of data are copied to distinct data storage structures of the same device. Thus, the bulk memory access operations are performed via hardware, thereby reducing performance impact.

Abstract: An interface adapter is provided that allows a host device that communicates through a first interface protocol, such as a Fiber Channel compliant interface or a SCSI compliant interface, to connect to a plurality of storage devices that communicate through a second interface protocol, such as an IDE/ATA compliant interface. The interface adapter is configured to convert transmissions received from the host device to the second interface protocol and to convey the converted transmissions to the plurality of storage devices. The interface adapter is also configured to convert transmissions received according to the second interface protocol from the plurality of storage devices to the first interface protocol and to convey the converted transmissions to the host device. In this manner, the host device and the storage devices can accomplish input/output (I/O) transactions despite the fact that they implement different interface protocols.

Abstract: Embodiments of the present invention provide methods and systems for data movement in data storage systems. For one embodiment, a physical data storage parcel containing a first type of data requiring a first type of processing and a second type of data requiring a second type of processing is created. The first type of data is transferred to a first memory address space via a direct memory access operation and the second type of data is transferred to a second memory address space via the direct memory access operation. For one embodiment, the first type of data and the second type of data are copied to physically distinct data storage mediums. In an alternative embodiment, the first type of data and the second type of data are copied to distinct data storage structures of the same device. Thus, the bulk memory access operations are performed via hardware, thereby reducing performance impact.

Abstract: Embodiments of the invention provide a parcel-based, data-mapping scheme that allow for implementation of data integrity methods and variable size logical data blocks while the layout of the physical storage device remains unchanged. For one embodiment, the invention provides a method in which a virtual data storage parcel including a number of extended-size logical data storage blocks is created, and one or more physical data storage parcels, each including a number of standard-size logical data storage blocks, is created. The combined size of the one or more physical data storage parcels equals or exceeds the size of the virtual data storage parcel. The extended-size logical data storage blocks of the virtual data storage parcel are mapped to the standard-size logical data storage blocks of the one or more physical data storage parcels.

Abstract: An interface adapter is provided that allows a host device that communicates through a first interface protocol, such as a Fiber Channel compliant interface or a SCSI compliant interface, to connect to a plurality of storage devices that communicate through a second interface protocol, such as an IDE/ATA compliant interface. The interface adapter is configured to convert transmissions received from the host device to the second interface protocol and to convey the converted transmissions to the plurality of storage devices. The interface adapter is also configured to convert transmissions received according to the second interface protocol from the plurality of storage devices to the first interface protocol and to convey the converted transmissions to the host device. In this manner, the host device and the storage devices can accomplish input/output (I/O) transactions despite the fact that they implement different interface protocols.