Patent ID: 9600192
Date: 2017-03-21
CPC Classifications: G06F

Claim:
1. A method, comprising: arranging multiple storage devices and multiple digital information devices having respective memories to communicate within a network; dividing data of a logical volume into data subsets; defining, for the logical volume, at least one storage configuration for the data subsets distributed among the respective storage devices; writing metadata for the logical volume to a first set of first metadata tables, each of the first metadata tables configured as a master metadata table; dividing the first set of first metadata tables into metadata subsets having a one-to-one correspondence with the data subsets; distributedly storing the metadata subsets among the multiple digital information devices, the storage configuration of the data subsets independent from the storing of the metadata subsets; copying the metadata from the first set of first metadata tables to a second set of corresponding second metadata tables in a one-to-one correspondence with the first metadata tables, each of the second metadata tables configured as a backup metadata table; and distributedly storing the second metadata tables among the multiple digital information devices so that a given first metadata table and the corresponding second metadata table are stored to a different one of the multiple digital information devices, and so that the corresponding second metadata tables for the first metadata tables on a first of the digital information devices are distributed among at least an additional two of the digital information devices.