PERFORMANCE IMPROVEMENT OF A CAPACITY OPTIMIZED STORAGE SYSTEM USING A PERFORMANCE SEGMENT STORAGE SYSTEM AND A SEGMENT STORAGE SYSTEM

• US 20110072227A1
• Filed: 09/21/2010
• Published: 03/24/2011
• Est. Priority Date: 09/22/2009
• Status: Active Grant

• Current Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Original Assignee: EMC Corporation (Dell Technologies Inc.)
• Inventors: Patterson, R. Hugo
• Granted Patent: US 9,141,300 B2
• Time in Patent Office: Days
• US Class Current: 711/162
• CPC Class Codes: G06F 12/121 using replacement algorithms
• CPC Class Codes: G06F 3/0607 by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
• CPC Class Codes: G06F 3/0608 Saving storage space on storage systems
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0611 in relation to response time
• CPC Class Codes: G06F 3/0619 in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/064 Management of blocks
• CPC Class Codes: G06F 3/0641 De-duplication techniques
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
• CPC Class Codes: G06F 3/0685 Hybrid storage combining heterogeneous device types, e.g. hierarchical storage, hybrid arrays

Abstract

A system for storing data comprises a performance storage unit for storing a data stream or a data block in. The data stream or the data block comprises one or more data items. The system further comprises a segment storage system for automatically storing a stored data item of the one or more data items as a set of segments. The system further comprises a performance segment storage unit for storing the set of segments in the event that the stored data item has been stored using the segment storage system.

Claims

1. A system for storing data, comprising:

a performance storage unit for storing a data stream or a data block in, wherein the data stream or the data block comprises one or more data items;

a segment storage system for storing a stored data item of the one or more data items as a set of segments;

a performance segment storage unit for storing the set of segments in the event that the stored data item has been stored using the segment storage system.

2. A system as in claim 1, wherein the performance storage unit removes the stored data item after that the stored data item is stored by the segment storage system.

3. A system as in claim 1, wherein the segment storage system is replicated using a replica segment storage system.

4. A system as in claim 1, wherein the performance storage unit comprises one or more of the following:

a flash memory, a fiber channel storage device, a persistent memory, a flash memory, a fiber channel storage device, a persistent memory, a block addressable memory, or a file system organized memory.

5. A system as in claim 1, wherein the snapshot is performed according to a snapshot protocol.

6. A system as in claim 1, wherein a second stored data item of the one or more data items is not captured using any snapshot.

7. A system as in claim 1, wherein the snapshot is taken using a log of changes to the one or more data items stored by the performance storage unit.

8. A system as in claim 1, wherein the performance storage unit removes the stored data item once the stored data item is stored by taking the snapshot on the segment storage system.

9. A system as in claim 1, wherein the segment storage system stores the snap shot using variable length segments.

10. A system as in claim 1, wherein the segment storage system has content addressable segments.

11. A system as in claim 10, wherein the content addressable segments are addressed using a fingerprint of a segment.

12. A system as in claim 1, wherein the segment storage system is replicated using a replica segment storage system.

13. A system as in claim 12, wherein the replica segment storage system stores a copy of the snapshot of the stored data item.

14. A system as in claim 12, wherein the replication of the segment storage system occurs according to a replication protocol.

15. A system as in claim 1, wherein a data representation in the performance storage unit is not the same as the data representation in the segment storage system.

16. A system as in claim 15, wherein the data representation in the performance storage unit comprises an uncompressed data representation.

17. A system as in claim 15, where the data representation in the segment storage system comprises a compressed data representation.

18. A system as in claim 1, wherein the performance segment storage unit includes data stored using both a compressed data representation.

19. A method for storing data, comprising:

storing a data stream or a data block in a performance storage unit, wherein the data stream or the data block comprises one or more data items;

storing a stored data item of the one or more data items as a set of segments using a segment storage system; and

in the event that the stored data item has been stored using the segment storage system, storing the set of segments in a performance segment storage unit.

20. A computer program product for storing data, the computer program product being embodied in a computer readable storage medium and comprising computer instructions for:

storing a data stream or a data block in a performance storage unit, wherein the data stream or the data block comprises one or more data items;

storing a stored data item of the one or more data items as a set of segments using a segment storage system; and

in the event that the stored data item has been stored using the segment storage system, storing the set of segments in a performance segment storage unit.