摘要:
A client computer streams a digital media presentation from a dispersed data storage network including a plurality of slice servers. A dispersed data storage network access component streams data directly from the dispersed data storage network and passes data to a media player, also residing on the client computer.
摘要:
A method begins by a dispersed storage (DS) processing module selecting two or more correlated error messages of a plurality of error messages. The method continues with the DS processing module identifying two or more collection of records corresponding to the selected two or more correlated error messages such that a collection of records includes an event record including information regarding an event, a first record including information regarding a dispersed storage (DS) processing module processing an event request to produce a plurality of sub-event requests, and a plurality of records including information regarding a plurality of DS units processing the plurality of sub-event requests. The method continues with the DS processing module identifying a correlation cause of one or more errors corresponding to the two or more correlated error messages based on the two or more collections of records.
摘要:
A method begins by a dispersed storage (DS) processing module identifying a set of collections of records corresponding to a data segment that is stored in a dispersed storage network (DSN) as a set of encoded data slices, wherein a collection of records includes an event record including information regarding an event, a first record including information regarding a dispersed storage (DS) processing module processing an event request to produce a plurality of sub-event requests, and a plurality of records including information regarding a set of DS units processing the plurality of sub-event requests. The method continues with the DS processing module determining whether an error exists for one of the set of encoded data slices based on at least some of the set of collections of records and when the error exists, flagging the one of the set of encoded data slices for potential rebuilding.
摘要:
A method begins by a dispersed storage (DS) processing module identifying a performance anomaly within a dispersed storage network (DSN). The method continues with the DS processing module identifying a set of collections of records corresponding to the performance anomaly, wherein one of the set of collections of records includes an event record including information regarding an event, a first record including information regarding a dispersed storage (DS) processing module processing an event request to produce a plurality of sub-event requests, and a plurality of records including information regarding a set of DS units processing the plurality of sub-event requests. The method continues with the DS processing module determining whether a reliable significance indication of the performance anomaly is determinable, and when the reliable significance indication of the performance anomaly is not determinable, modifying data collection criteria for one or more of the sets collections of records.
摘要:
A method begins by a processing module receiving an encoded data slice for storage in memory that is organized as a plurality of log files and identifying a log file based on information regarding the encoded data slice to produce an identified log file, wherein the identified log file is storing at least one other encoded data slice. The method continues with the processing module comparing storage parameters of the identified log file with desired storage parameters associated with the encoded data slice. The method continues with the processing module attempting to identify a second log file based on an alternate log file storage protocol when the storage parameters of the identified log file compare unfavorably with the desired storage parameters and when the second log file is identified, storing the encoded data slice in the second log file.
摘要:
A method for reading data from a dispersed data storage network that includes a plurality of slice servers. The method begins by accessing a list of slice servers of the plurality of slice servers, wherein each slice server on the list stores at least one data slice associated with a data segment of the data. The method continues by transmitting read requests to at least some of the slice servers on the list. The method continues by receiving a data slice from a slice server on the list. The method continues by determining whether a threshold number of data slices has been received. The method continues, when the threshold number of data slices has been received, assembling the data segment from at least the threshold number of data slices.
摘要:
A method begins by a processing module determining a retrieval threshold for retrieving a set of encoded data slices from a dispersed storage network (DSN), wherein the set of encoded data slices represents data encoded using a dispersed storage error encoding function having a pillar width of “n”, a decode threshold of “k”, and an encoding ratio of n−k>k and wherein the retrieval threshold is in accordance with the encoding ratio. The method continues with the processing module issuing data retrieval requests to the DSN for the set of encoded data slices and receiving encoded data slices of the set of encoded data slices to produce received encoded data slices. The method continues with the processing module decoding the received encoded data slices to recapture the data when a number of received encoded data slices compares favorably to the retrieval threshold.
摘要:
A method begins by a processing module identifying a memory loading mismatch between a first memory device and a second memory device of a dispersed storage unit, wherein the first memory device is assigned a first range of slice names and the second memory device is assigned a second range of slice names. The method continues with the processing module determining an estimated impact to reduce the memory loading mismatch and when the estimated impact compares favorably to an impact threshold, modifying the first and second ranges of slices names to produce a first modified range of slice names for the first memory device and a second modified range of slice names for the second memory device based on the memory loading mismatch and transferring one or more encoded data slices between the first and second memory devices in accordance with the first and second modified ranges of slice names.
摘要:
A block-based interface to a dispersed data storage network is disclosed. The disclosed interface accepts read and write commands from a file system resident on a user's computer and generates network commands that are forwarded to slice servers that form the storage component of the dispersed data storage network. The slice servers then fulfill the read and write commands.
摘要:
A file system interface to a dispersed data storage network is disclosed. The disclosed interface accepts read and write commands from a file system resident on a user's computer and generates network commands that are forwarded to slice servers that form the storage component of the dispersed data storage network. The slice servers then fulfill the read and write commands.