DISTRIBUTED STORAGE NETWORK FOR MODIFICATION OF A DATA OBJECT

摘要

A method for updating software in storage units of a dispersed storage network includes determining a software updating sequence pattern, which insures that, for each set of encoded data slices, a decode threshold number of encoded data slices is accessible. The method includes taking a set of the storage units off-line for software updating in accordance with the software updating sequence pattern. The method includes, when the software has been successfully updated in the set of storage units, putting the set of storage units back on-line and taking another set of the storage units off-line in accordance with the software updating sequence pattern. The method includes, when the software has been successfully updated in the other set of storage units, putting the other set of storage units back on-line and taking yet another set of the storage units off-line for software updating in accordance with the software updating sequence pattern.

主权项

1. A method for updating software in storage units of a dispersed storage network (DSN), wherein the storage units stores pluralities of sets of encoded data slices, wherein a data object is dispersed storage error encoded to produce a plurality of sets of encoded data slices, the method is executed by a computing device and comprises:
determining a software updating sequence pattern for the storage units, wherein the software updating sequence pattern insures that, for each set of encoded data slices of the pluralities of sets of encoded data slices, a decode threshold number of encoded data slices is accessible, wherein the decode threshold number of encoded data slices is a minimum number of encoded data slices of the set of encoded data slices needed to recover a data segment of the data object; taking a set of the storage units off-line for software updating in accordance with the software updating sequence pattern for updating software; when the software has been successfully updated in the set of the storage units, putting the set of storage units back on-line and taking another set of the storage units off-line for software updating in accordance with the software updating sequence pattern for updating the software; and when the software has been successfully updated in the other set of storage units, putting the other set of storage units back on-line and taking yet another set of the storage units off-line for software updating in accordance with the software updating sequence pattern for updating the software.