Patent ID: 9304759
Filing Date: 2016-04-05
CPC Classification: G06F,H04L

Claim Text:
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 the 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 the storage units, putting the other set of the 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.