Abstract: Responding to IO requests made by an application to an operating system within a computing device implements IO performance acceleration that interfaces with the logical and physical disk management components of the operating system and within that pathway provides a system memory based disk block cache. The logical disk management component of the operating system identifies logical disk addresses for IO requests sent from the application to the operating system. These addresses are translated to physical disk addresses that correspond to disk blocks available on a physical storage resource. The disk block cache stores cached disk blocks that correspond to the disk blocks available on the physical storage resource, such that IO requests may be fulfilled from the disk block cache.

Abstract: Mirroring write operations from a local storage system to a remote storage system. Such mirroring comprises intercepting I/O transactions to a storage disk of the local storage system, identifying a series of write transactions to said storage disk from the intercepted I/O transactions, storing an exact copy of the series of write transactions within a series of files that are created on a file-system of the local storage system, and transmitting the series of files from the local storage system to the remote storage system to accommodate a reproduction at the remote storage system of the series of write transactions as issued to said storage disk of the local storage system.

Abstract: A system and method that mirrors data between two geographically separate locations. A preferred embodiment of the software includes three components: an AIM driver, an AIM service coordinator and an AIM manager. The AIM driver intercepts all disk I/Os to the local storage system and encapsulates the write transactions into a series of files. The AIM service coordinator transmits these files over any or all remote networks having remote storage systems connected to the local storage system and to which the data is to be mirrored. In a preferred embodiment, particular destinations for each write transaction may be user specified. These files, as they are received at the remote storage system, are placed into the file system of the remote storage system. The AIM service coordinator on the remote storage system detects the arrival of the files and accesses them.

Abstract: A computer network system includes a client-server architecture, where the client transmits SCSI commands over a network using TCP/IP to a server to request input and output operations for a physical storage device that is communicatively coupled to a storage device. The client perceives the storage device to be a local disk drive, even though the storage device is located on the target side of a network. The system includes a client-side disk-based cache.

Abstract: A computer network system includes a client-server architecture, where the client transmits SCSI commands over a network using TCP/IP to a server to request input and output operations for a physical storage device that is communicatively coupled to a storage device. The client perceives the storage device to be a local disk drive, even though the storage device is located on the target side of a network. The system includes a client-side disk-based cache.