ADJUSTING A DISPERSAL PARAMETER OF DISPERSEDLY STORED DATA

摘要

A method includes dispersed storage error encoding a data object into a plurality of sets of encoded data slices. The method further includes determining a local slice storage number, a local area network (LAN) slice storage number, and a wide area network (WAN) slice storage number, wherein a sum of the local slice number, the LAN slice storage number, and the WAN slice storage number equals the pillar width number. For at least some sets of encoded data slices, the method further includes sending the local slice storage number of encoded data slices to the local slice storage number of local memory devices; sending the LAN slice storage number of encoded data slices to the LAN slice storage number of LAN storage units of the DSN; and sending the WAN slice storage number of encoded data slices to the WAN slice storage number of WAN storage units of the DSN.

主权项

1. A method for execution by a computing device of a dispersed storage network (DSN), the method comprises:
dispersed storage error encoding a data object into a plurality of sets of encoded data slices, wherein a data segment of the data object is recoverable from a decode threshold number of encoded data slices of a set of encoded data slices of the plurality of sets of encoded data slices and wherein the set of encoded data slices includes a pillar width number of encoded data slices; determining a local slice storage number, a local area network (LAN) slice storage number, and a wide area network (WAN) slice storage number, wherein the local slice storage number is less than or equal to the decode threshold number and wherein a sum of the local slice number, the LAN slice storage number, and the WAN slice storage number equals the pillar width number; and for each set of at least some sets of encoded data slices of the plurality of sets of encoded data slices:
sending the local slice storage number of encoded data slices to the local slice storage number of local memory devices;sending the LAN slice storage number of encoded data slices to the LAN slice storage number of LAN storage units of the DSN; andsending the WAN slice storage number of encoded data slices to the WAN slice storage number of WAN storage units of the DSN.