Intel Corporation
METHOD AND APPARATUS TO IMPROVE PERFORMANCE OF A REDUNDANT ARRAY OF INDEPENDENT DISKS THAT INCLUDES ZONED NAMESPACES DRIVES

Abstract:

High performance parity-based Redundant Array of Independent Disks (RAID) on Zoned Namespaces Solid State Drives (SSD)s with support for high queue depth write Input Output (IO) and Zone Append command is provided in a host system. The host system includes a stripe mapping table to store mappings between parity strips and data strips in stripes on the RAID member SSDs. The host system also includes a Logical to Physical (L2P) table to store data block addresses returned by the Zone Append command.