Abstract: A method for access control, the method may include (a) receiving, by a file server, an access request for allowing a user to access a file system entity, the user is identified by a first file system protocol (FSP) user identifier, (b) converting the first FSP user identifier to a first access control user identifier (ACUI) of the user, the first ACUI represents a combination of the user and the first FSP, (c) searching, within an access control data structure (ACUI), for a relevant access control rule associated with a member of a multiprotocol set of ACUIs of the user, wherein the multiprotocol set includes the first ACUI of the user and at least one other ACUI of the user that represents at least one combination of the user and at least one other FSP, and (d) responding to the access request based on the relevant access control rule, when finding the relevant access control.

Abstract: A method for access control, the method may include (a) receiving, by a file server, an access request for allowing a user to access a file system entity, the user is identified by a first file system protocol (FSP) user identifier, (b) converting the first FSP user identifier to a first access control user identifier (ACUI) of the user, the first ACUI represents a combination of the user and the first FSP, (c) searching, within an access control data structure (ACUI), for a relevant access control rule associated with a member of a multiprotocol set of ACUIs of the user, wherein the multiprotocol set includes the first ACUI of the user and at least one other ACUI of the user that represents at least one combination of the user and at least one other FSP, and (d) responding to the access request based on the relevant access control rule, when finding the relevant access control.

Abstract: A method for preventing file system case related errors, the method may include receiving, by a storage system, an indication that a case insensitive file system client intends to cache a first file of a file system; searching for match between (a) at least a part of a case-insensitive version of a case-sensitive pathname of the first file, and (b) at least a part of a case-insensitive version of a case-sensitive pathname of a second file that belongs to the file system and differs from the first file; and preventing a caching of the first file by the case insensitive file system client.

Abstract: A storage system, including: (a) a primary storage entity utilized for storing a data-set of the storage system; (b) a secondary storage entity utilized for backing-up the data within the primary storage entity; (c) a flushing management module adapted to identify within the primary storage entity two groups of dirty data blocks, each group is comprised of dirty data blocks which are arranged within the secondary storage entity in a successive sequence, and to further identify within the primary storage entity a further group of backed-up data blocks which are arranged within the secondary storage entity in a successive sequence intermediately in-between the two identified groups of dirty data blocks; and (d) said flushing management module is adapted to combine the group of backed-up data blocks together with the two identified groups of dirty data blocks to form a successive extended flush sequence and to destage it to the secondary storage entity.

Abstract: Provided is a method for copying data as stored in at least one source storage entity, including copying data from a source storage entity into a destination storage entity and catering to at least one I/O operation directed toward the source storage entity during copying, the copying including reading at least one chunk of data in a predetermined order; and reading, responsive to a request, at least one relevant chunk containing data related to at least one I/O operation out of the predetermined order.

Abstract: Systems and methods for input/output command management. In embodiments of the invention an input/output command fully executes after a lock has been obtained for the command on all storage segments relating to the command, in a predetermined order. Some embodiments of the invention allow overlapping access to storage and/or to individual storage segments by a plurality of input/output commands. In some embodiments of the invention, prioritization of commands is facilitated through the usage of a sharing policy and/or wakeup policy.

Abstract: There is provided according to an example of the claimed subject matter, a system and a method for managing access to a shared storage entity. According to an example of the claimed subject matter, a system for managing access to a shared storage entity can include two or more initiator entities, two or more local sequencing agents and an arbitration module. Each of the two or more local sequencing agents can be associated with a respective one of two or more initiator entities which generate I/O requests for accessing the shared storage entity. Each local sequencing agent can be adapted to locally sequence its respective initiator entity's I/O requests.

Abstract: Systems and methods for input/output command management. In some cases of a write command received from a host, a maximum capacity limit relating to primary memory may be disregarded because data relating to the write command is written to backup memory prior to acknowledging the write command. In some of these cases, timeout is less likely than if the maximum capacity limit had been respected.

Abstract: A storage system, including: (a) a primary storage entity utilized for storing a data-set of the storage system; (b) a secondary storage entity utilized for backing-up the data within the primary storage entity; (c) a flushing management module adapted to identify within the primary storage entity two groups of dirty data blocks, each group is comprised of dirty data blocks which are arranged within the secondary storage entity in a successive sequence, and to further identify within the primary storage entity a further group of backed-up data blocks which are arranged within the secondary storage entity in a successive sequence intermediately in-between the two identified groups of dirty data blocks; and (d) said flushing management module is adapted to combine the group of backed-up data blocks together with the two identified groups of dirty data blocks to form a successive extended flush sequence and to destage it to the secondary storage entity.

Abstract: A compression and decompression method and apparatus comprising at least one data source providing a stream of data to at least one data destination, employing at least one pattern classifier processing the stream of data of the at least one data source into a single stream of messages and generating at least one pattern event, a message encoder and a message decoder changing an internal state in response to the at least one pattern event.

Abstract: A compression and decompression method and apparatus comprising at least one data source providing a stream of data to at least one data destination, employing at least one pattern classifier processing the stream of data of the at least one data source into a single stream of messages and generating at least one pattern event, a message encoder and a message decoder changing an internal state in response to the at least one pattern event.