Abstract: Example data storage systems and methods are described. In one implementation, a method identifies data to be written to a shared storage system that includes multiple storage nodes. The method communicates a write operation vote request to each of the multiple storage nodes. The write operation vote request is associated with a data write operation to write the identified data to the shared storage system. A positive response is received from at least a portion of the multiple storage nodes. The data write operation is initiated in response to receiving positive responses from a quorum of the storage nodes.

Abstract: Example data storage systems and methods are described. In one implementation, one or more processors implement multiple virtual machines, each of which is executing an application. A virtual controller is coupled to the processors and manages storage of data received from the multiple virtual machines. Multiple I/O channels are configured to communicate data from the multiple virtual machines to a data storage node based on data storage instructions received from the virtual controller.

Abstract: A storage pool component is operable on a computing device including a storage medium having an otherwise free storage capacity for forming a portion of a storage capacity of a storage pool and being operably connected across a network to at least one other such component. The component comprises configuration data identifying at least one other computing device to which the computing device may connect across the network; and a directory for identifying file information for files of the storage pool stored on the storage medium, the file information being stored with a degree of redundancy across the computing devices of the storage pool. On instantiation, the component for communicates with at least one other component operating on one of the other computing devices to verify the contents of the directory. The component reconciles file information stored on the storage medium with file information from the remainder of the storage pool.

Abstract: Example data management systems and methods are described. In one implementation, a method restores data on a first data storage node that is part of a data storage system including multiple storage nodes. The method marks multiple data entries stored in the first data storage node as dirty. A data index associated with the data storage system is received from a quorum of the data storage nodes in the data storage system. The data index is compared with data entries stored in the first data storage node. Data entries that are not contained in the data index are deleted from the first data storage node. Data entries stored in the first data storage nodes are modified to match corresponding data entries in the data storage system based on the data index.

Abstract: Example data storage systems and methods are described. In one implementation, a method identifies data to be written to a shared storage system that includes multiple storage nodes. The method communicates a write operation vote request to each of the multiple storage nodes. The write operation vote request is associated with a data write operation to write the identified data to the shared storage system. A positive response is received from at least a portion of the multiple storage nodes. The data write operation is initiated in response to receiving positive responses from a quorum of the storage nodes.

Abstract: A storage pool component is operable on a computing device including a storage medium having an otherwise free storage capacity for forming a portion of a storage capacity of a storage pool and being operably connected across a network to at least one other such component. The component comprises configuration data identifying at least one other computing device to which the computing device may connect across the network; and a directory for identifying file information for files of the storage pool stored on the storage medium, the file information being stored with a degree of redundancy across the computing devices of the storage pool. On instantiation, the component for communicates with at least one other component operating on one of the other computing devices to verify the contents of the directory. The component reconciles file information stored on the storage medium with file information from the remainder of the storage pool.