Abstract: A file storage system for storing data of a file received from a client includes a back-end file server in which the data is stored. The system includes a cache appliance in communication with the file server, such that the appliance stores portions of the data or attributes of the file, and uses the stored data or attributes to process file system requests received from the client, and which reads and writes data and attributes to the back-end file server independently. A system for responding to a file system protocol request in regard to a back-end server includes a token server.

Abstract: A storage system includes a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS) for storage. Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis for storage. A file system for storing a file. A file system for storing includes a plurality of vdisks. A method for storing a file.

Abstract: A file storage system for storing data of a file received from a client includes a back-end file server in which the data is stored. The system includes a cache appliance in communication with the file server, such that the appliance stores portions of the data or attributes of the file, and uses the stored data or attributes to process file system requests received from the client, and which reads and writes data and attributes to the back-end file server independently. A system for responding to a file system protocol request in regard to a back-end server includes a token server.

Abstract: A system for storing data includes a plurality of clusters located remotely from each other in which the data is stored. Each cluster has a token server that controls access to the data with only one token server responsible for any piece of data. Each cluster has a plurality of Cache appliances. Each cluster has at least one backend file server in which the data is stored. The system includes a communication network through which the servers and appliances communicate with each other. A Cache Appliance cluster in which data is stored in back-end servers within each of a plurality of clusters located remotely from each other. A method for storing data.

Abstract: A file storage system for storing data of a file received from a client includes a back-end file server in which the data is stored. The system includes a cache appliance in communication with the file server, such that the appliance stores portions of the data or attributes of the file, and uses the stored data or attributes to process file system requests received from the client, and which reads and writes data and attributes to the back-end file server independently. A system for responding to a file system protocol request in regard to a back-end server includes a token server.

Abstract: A storage system includes a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS) for storage. Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis for storage. A file system for storing a file. A file system for storing includes a plurality of vdisks. A method for storing a file.

Abstract: A storage system includes a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS). Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis.

Abstract: A storage system includes a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS) for storage. Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis for storage. A file system for storing a file. A file system for storing includes a plurality of vdisks. A method for storing a file.

Abstract: A storage system includes a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS). Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis.

Abstract: A storage system includes a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS) for storage. Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis for storage. A file system for storing a file. A file system for storing includes a plurality of vdisks. A method for storing a file.

Abstract: A storage system includes a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS). Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis.

Abstract: A file storage system for storing data of a file received from a client includes a back-end file server in which the data is stored. The system includes a cache appliance in communication with the file server, such that the appliance stores portions of the data or attributes of the file, and uses the stored data or attributes to process file system requests received from the client, and which reads and writes data and attributes to the back-end file server independently. A system for responding to a file system protocol request in regard to a back-end server includes a token server.

Abstract: A system for storing file data and directory data received over a network includes a network interface in communication with the network which receives NAS requests containing data to be written to files from the network. The system includes a first type of storage. The system includes a second type of storage different from the first type of storage. The system includes a policy specification n which specifies a first portion of one or more files' data which is less than all of the files' data is stored in the first type of storage and a second portion of the data which is less than all of the data of the files is stored in the second type of store. The system comprises a processing unit which executes the policy and causes the first portion to be stored in the first type of storage and a second portion to be stored in the second type of storage. A method for storing file data and directory data received over a network.

Abstract: A storage system includes a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS) for storage. Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis for storage. A file system for storing a file. A file system for storing includes a plurality of vdisks. A method for storing a file.

Abstract: A storage system comprises a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS). Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis.

Abstract: A system for storing file data and directory data received over a network includes a network interface in communication with the network which receives NAS requests containing data to be written to files from the network. The system includes a first type of storage. The system includes a second type of storage different from the first type of storage. The system includes a policy specification n which specifies a first portion of one or more files' data which is less than all of the files' data is stored in the first type of storage and a second portion of the data which is less than all of the data of the files is stored in the second type of store. The system comprises a processing unit which executes the policy and causes the first portion to be stored in the first type of storage and a second portion to be stored in the second type of storage. A method for storing file data and directory data received over a network.

Abstract: A file storage system for storing data of a file received from a client includes a back-end file server in which the data is stored. The system includes a cache appliance in communication with the file server, such that the appliance stores portions of the data or attributes of the file, and uses the stored data or attributes to process file system requests received from the client, and which reads and writes data and attributes to the back-end file server independently. A system for responding to a file system protocol request in regard to a back-end server includes a token server.

Abstract: A system for storing data includes a plurality of clusters located remotely from each other in which the data is stored. Each cluster has a token server that controls access to the data with only one token server responsible for any piece of data. Each cluster has a plurality of Cache appliances. Each cluster has at least one backend file server in which the data is stored. The system includes a communication network through which the servers and appliances communicate with each other. A Cache Appliance cluster in which data is stored in back-end servers within each of a plurality of clusters located remotely from each other. A method for storing data.

Abstract: A system for storing data includes a plurality of clusters located remotely from each other in which the data is stored. Each cluster has a token server that controls access to the data with only one token server responsible for any piece of data. Each cluster has a plurality of Cache appliances. Each cluster has at least one backend file server in which the data is stored. The system includes a communication network through which the servers and appliances communicate with each other. A Cache Appliance cluster in which data is stored in back-end servers within each of a plurality of clusters located remotely from each other. A method for storing data.

Abstract: A storage system includes a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS) for storage. Each vdisk stores files with data and meta data distributed among its storage segments. A storage system includes a memory having multiple classes of service. The system includes an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis for storage. A file system for storing a file. A file system for storing includes a plurality of vdisks. A method for storing a file.