Patent ID: 9575675
Date: 2017-02-21
CPC Classifications: G06F

Claim:
1. A method, comprising: arranging multiple distributed 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 distributed 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; and 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.