Patent ID: 8914425

Claim:
A system in communication with data storage, for storing data, and comprising: a first log structured array storing data in a storage device; a first log structured data storage system operable with the first log structured array to store the data in the first log structured array; a second log structured array in the storage device storing metadata for the data in the first log structured array, wherein the second log structured array for storing the metadata is nested within the first log structured array, and wherein the first and second log structured arrays comprise separate instances of log structured arrays; a second log structured storage system operable with the second log structured array, wherein the second log structured storage system allocates address space in the second log structured array for the metadata when the first log structured storage system requires the allocation of address space for metadata for data the first log structured storage system stores in the first log structured array; and a superblock area storing data for both the first and second log structured arrays, wherein the second log structured array uses a portion of the superblock area to provide a data area in which the first log structured array stores metadata.