Automatic raid mirroring when adding a second boot drive

• US 9,213,611 B2
• Filed: 08/26/2013
• Issued: 12/15/2015
• Est. Priority Date: 07/24/2013
• Status: Active Grant

• Current Assignee: Western Digital Technologies Incorporated (Western Digital Corporation)
• Original Assignee: Western Digital Technologies Incorporated (Western Digital Corporation)
• Inventors: Ludwig, Thomas E., Maroney, John E.
• Primary Examiner(s): Manoskey, Joseph D
• Application Number:
  US14/010,458
• Publication Number:
  US 20150033067A1
• Time in Patent Office: 841 Days
• Field of Search: 714/6.22, 714/6.23, 714/6.21, 714/6.1, 714/6.2
• US Class Current: 1/1
• CPC Class Codes: G06F 11/0727 in a storage system, e.g. in a DASD or network based storage system drivers for digital recording or reproducing units G06F3/06; circuits for error detection or correction within digital recording or reproducing units G11B20/18; for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS], H04L67/1097
• CPC Class Codes: G06F 11/1417 Boot up procedures
• CPC Class Codes: G06F 11/1662 the resynchronized component or unit being a persistent storage device re-synchronization of failed mirror storage G06F11/2082; rebuild or reconstruction of parity RAID storage G06F11/1008
• CPC Class Codes: G06F 11/201 between storage system components
• CPC Class Codes: G06F 11/2056 by mirroring
• CPC Class Codes: G06F 11/2069 Management of state, configuration or failover
• CPC Class Codes: G06F 11/2082 Data synchronisation
• CPC Class Codes: G06F 11/2087 with a common controller
• CPC Class Codes: G06F 3/0617 in relation to availability
• CPC Class Codes: G06F 3/0632 by initialisation or re-initialisation of storage systems
• CPC Class Codes: G06F 3/0689 Disk arrays, e.g. RAID, JBOD

Abstract

A storage system including a first boot drive configured to store an operating system, one or more data drives configured to store user data, the one or more data drives distinct from the first boot drive, and a controller configured to detect when a second boot drive is added to the storage system, and automatically configure the first boot drive and the second boot drive in a redundant array of independent disks (“RAID”) configuration when the controller detects that the second boot drive is added to the storage system.

Claims

1. A storage system comprising:

a first boot drive configured to store an operating system;

one or more data drives configured to store user data, the one or more data drives being distinct from the first boot drive; and

a controller configured to;

detect when a second boot drive is added to the storage system;

determine whether the second hoot drive is a valid hoot drive;

automatically configure the first boot drive and the second boot drive in a redundant array of independent disks (“

RAID”

) configuration when the controller detects that the second boot drive added to the storage system is a valid boot drive; and

prevent configuration of the second hoot drive in the RAW configuration when the controller determines that the second boot drive added to the storage system is not a valid boot drive.

2. The storage system of claim 1 wherein the first boot drive comprises RAID configuration metadata and the second boot drive comprises RAID configuration metadata.

3. The storage system of claim 2 wherein the controller is configured to determine when the first boot drive or the second drive contains an error by analyzing the RAID configuration metadata of the first boot drive and the RAID configuration metadata of the second boot drive.

4. The storage system of claim 2 wherein the controller is configured to determine when the second boot drive is a new boot drive by analyzing the RAID configuration metadata of the second boot drive.

5. storage system of claim 4 wherein the controller is further configured to automatically configure the first boot drive and the second boot drive in the RAID configuration when the controller determines that the second boot drive is a new boot drive.

6. The storage system of claim 5 wherein the controller further determines that the second boot drive is a new boot drive by comparing the RAID configuration metadata of the second boot drive with the RAID configuration metadata of the first boot drive.

7. The storage system of claim 4 wherein the controller is further configured to automatically configure the first boot drive and the second boot drive in the RAID configuration when the second boot drive is determined to be new boot drive.

8. The storage system of claim 1 wherein the controller is further configured to configure the first boot drive and the second boot drive in a RAID 1 configuration.

9. The storage system of claim 1 wherein the controller is further configured to automatically migrate data from the first boot drive to the second boot drive when the controller detects that the second hoot drive is added to the storage system.

10. A method for configuring a first boot drive and a second boot drive in a storage system, the method comprising:

detecting when the second boot drive is added to the storage system using a controller in the storage system, wherein the storage system further comprises one or more data drives distinct from the first boot drive;

determining whether the second boot drive is a valid boot drive;

automatically configuring the first boot drive and the second boot drive in a redundant array of independent disks (“

RAID”

) configuration when the controller detects that the second boot drive added to the storage system as a valid boot drive; and

preventing, configuration of the second boot drive in the RAID configuration when the second boot drive added to the storage system is determined not to be a valid boot drive,

wherein the first boot drive is configured to store an operating system, and the one or more data drives are configured to store user data.

11. The method of claim 10 wherein the first boot drive comprises RAID configuration metadata and the second boot drive comprises RAID configuration metadata.

12. The method of claim 11 further comprising:

determining when the first boot drive or the second drive contains an error by analyzing the RAID configuration metadata of the first boot drive and the RAID configuration metadata of the second boot drive.

13. The method of claim 11 further comprising:

determining when the second boot drive is a new boot drive by analyzing the RAID configuration metadata of the second boot drive.

14. The method of claim 13 further comprising:

automatically configuring the first boot drive and the second boot drive in the RAID configuration when the controller determines that the second boot drive is a new boot drive.

15. The method of claim 14 further comprising:

determining that the second boot drive is a new boot drive by comparing the RAID configuration metadata of the second boot drive with the RAID configuration metadata of the first boot drive.

16. The method of claim 13

wherein automatically configuring comprises automatically configuring the first boot drive and the second boot drive in the RAID configuration when the second boot drive is determined to be a new boot drive.

17. The method of claim 10 further comprising:

configuring the first boot drive and the second boot drive in a RAID 1 configuration.

18. The method of claim 10 further comprising:

automatically migrating data from the first boot drive to the second boot drive when the controller detects that the second boot drive is added to the storage system.

19. A server comprising:

a boot drive configured to store an operating system;

one or more data drives configured to store user data, the one or more data drives being distinct from the boot drive; and

a controller configured to;

provide a selection for the one or more data drives between a redundant array of independent disks (“

RAID”

) configuration and an extent based file system configuration.

20. The server of claim 19 wherein the one or more data drives comprise a first data drive comprising a first size, and a second data drive comprising a second size different than the first size.

21. The server of claim 20 wherein the first data drive is configured to store a first amount of user data, and the second data drive is configured to store a second amount of user data different than the first amount of user data.

22. The server of claim 19 wherein the one or more data drives comprise a first data drive comprising a first type of data drive, and a second data drive comprising a second type of data drive different than the first type of data drive.

23. The server of claim 22 wherein the first type of data drive comprises a hard disk drive, and the second type of data drive comprises a solid state drive.

24. The server of claim 19 wherein the extent based file system configuration is configured to utilize a journal to keep track of space available in the one or more data drives, utilize the one or more data drives to form storage pools, and utilize the storage pools to create volumes.