DATA MANAGEMENT IN SOLID-STATE STORAGE DEVICES AND TIERED STORAGE SYSTEMS

• US 20120290779A1
• Filed: 07/27/2012
• Published: 11/15/2012
• Est. Priority Date: 09/08/2009
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Eleftheriou, Evangelos S., Haas, Robert, Hu, Xiao-Yu
• Application Number:
  US13/560,635
• Publication Number:
  US 20120290779A1
• Time in Patent Office: Days
• US Class Current: 711/103
• CPC Class Codes: G06F 3/0616 in relation to life time, e.g. increasing Mean Time Between Failures [MTBF]
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/0652 Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket
• CPC Class Codes: G06F 3/0685 Hybrid storage combining heterogeneous device types, e.g. hierarchical storage, hybrid arrays

Abstract

A method for managing data in a data storage system having a solid-state storage device and alternative storage includes identifying data to be moved in the solid-state storage device for internal management of the solid-state storage; moving at least some of the identified data to the alternative storage instead of the solid-state storage; and maintaining metadata indicating the location of data in the solid-state storage device and the alternative storage.

Claims

1. A method for managing data in a data storage system having a solid-state storage device and alternative storage, the method comprising:

identifying data to be moved in the solid-state storage device for internal management of the solid-state storage;

moving at least some of the identified data to the alternative storage instead of the solid-state storage; and

maintaining metadata indicating the location of data in the solid-state storage device and the alternative storage.

2. The method of claim 1, further comprising identifying data to be moved in a garbage collection process in the solid-state storage device and moving at least some of that data to the alternative storage instead of the solid-state storage.

3. The method of claim 1, further comprising identifying data to be moved in a wear-leveling process in the solid-state storage device and moving at least some of that data to the alternative storage instead of the solid-state storage.