Method and system for predicting storage device failures

• US 10,223,230 B2
• Filed: 09/11/2013
• Issued: 03/05/2019
• Est. Priority Date: 09/11/2013
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Jacoby, Robert B.
• Primary Examiner(s): Bryan, Jason B
• Application Number:
  US14/024,454
• Publication Number:
  US 20150074467A1
• Time in Patent Office: 2,001 Days
• CPC Class Codes: G06F 11/008 Reliability or availability analysis
• CPC Class Codes: G06F 11/3034 where the computing system component is a storage system, e.g. DASD based or network based digital input from or digital output to record carriers G06F3/06; digital recording or reproducing 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 11/3409 for performance assessment
• CPC Class Codes: G06F 11/3485 for I/O devices

Abstract

The invention pertains to a method and information handling system (IHS) for predicting storage device failures. An embodiment of the method of the present invention begins by obtaining data regarding input and output of the at least one storage device. Next, the obtained data is normalized to determine a duty cycle of the at least one storage device. Finally, using the normalized data, a likelihood of failure of the at least one storage device is determined. In another example embodiment, a failure indicator is associated with the at least one storage device based upon the determined likelihood of failure.

Claims

1. A computer implemented method of predicting storage device failures, the method comprising:

obtaining, in computer memory, data regarding reads and writes committed by an operating system to a logical storage device, the logical storage device implemented by a plurality of independent physical drives in a RAID configuration;

accessing the data in the computer memory and determining a normalized duty cycle for each physical drive of the logical storage device as a function of the accessed data regarding reads and writes committed by the operating system and the RAID configuration, each duty cycle corresponding to a total number of reads and writes of a respective physical drive in the plurality of physical drives and, wherein determining the normalized duty cycle for each physical drive as a function of the RAID configuration includes determining a respective total number of reads and writes of each physical drive based on a number of reads and writes to each respective physical drive for each read and write committed by the operating system to the logical storage device wherein, the number of reads and writes to each physical drive for each read and write committed by the operating system is a result of the RAID configuration of the physical drives;

determining a likelihood of failure of the logical storage device based on values of the duty cycles determined, wherein higher duty cycle indicates increased likelihood of failure;

populating a database with an indication of the likelihood of failure of the logical storage device determined;

determining a likelihood of failure for each physical drive in the plurality of physical drives based on the duty cycles determined; and

replacing at least one of the physical drives based on the likelihood of failures determined for each physical drive.

2. The method of claim 1 wherein the obtained data includes device configuration information and the obtained data comprises at least one of:

a number of reads;

a number of writes;

a size of one or more reads;

a size of one or more writes;

a number of Redundant Array of Independent Disk (RAID) sets;

a total number of disks;

a number of disks per RAID set; and

a full/partial stripe ratio.

3. The method of claim 1 wherein the indication of the likelihood of failure is a high, medium, or low failure indicator.

4. The method of claim 1 further comprising:

obtaining pre-established failure data based upon one or more hardware characteristics of the physical drives implementing the logical storage device; and

modifying the determined likelihood of failure of the logical storage device using the obtained pre-established failure data.

5. The method of claim 4 wherein the indication of the likelihood of failure is a high, medium, or low failure indicator, and the method further comprising:

modifying the indication to be one of high-plus, medium-plus, or low-plus using the pre-established failure data.

6. The method of claim 4 wherein the pre-established failure data based upon one or more hardware characteristics of the physical drives implementing the logical storage device comprises at least one of:

storage device size;

storage device speed;

storage device class; and

RAID type.

7. The method of claim 1 further comprising:

generating and sending an electronic notification based on the likelihood of failure of the logical storage device determined.

8. The method of claim 1 further comprising:

generating and sending an electronic notification based on the likelihood of failures determined for each physical drive.

9. An information handling system (IHS) comprising:

a processor; and

a memory with computer code instructions stored therein, the memory operatively coupled to said processor such that the computer code instructions configure the processor to implement;

a data module configured to obtain, in computer memory, data regarding reads and writes committed by an operating system to a logical storage device, the logical storage device implemented by a plurality of independent physical drives in a RAID configuration;

a normalizing module communicatively coupled to the data module and configured to access the data in the computer memory and determine a normalized duty cycle for each physical drive of the logical storage device as a function of the accessed data regarding reads and writes committed by the operating system and the RAID configuration, each duty cycle corresponding to a total number of reads and writes of a respective physical drive in the plurality of physical drives and, wherein determining the normalized duty cycle for each physical drive as a function of the RAID configuration includes determining a respective total number of reads and writes of each physical drive based on a number of reads and writes to each respective physical drive for each read and write committed by the operating system to the logical storage device wherein, the number of reads and writes to each physical drive for each read and write committed by the operating system is a result of the RAID configuration of the physical drives;

an assessment module configured to;

determine a likelihood of failure of the logical storage device based on values of the duty cycles determined, wherein higher duty cycle indicates increased likelihood of failure;

populate a database with an indication of the likelihood of failure of the logical storage device determined;

determine a likelihood of failure for each physical drive in the plurality of physical drives based on the duty cycles determined; and

replace at least one of the physical drives based on the likelihood of failures determined for each physical drive.

10. The IHS of claim 9 wherein the obtained data includes device configuration information and the obtained data comprises at least one of:

a number of reads;

a number of writes;

a size of one or more reads;

a size of one or more writes;

a number of Redundant Array of Independent Disk (RAID) sets;

a total number of disks;

a number of disks per RAID set; and

a full/partial stripe ratio.

11. The IHS of claim 9 wherein the indication of the likelihood of failure is a high, medium, or low failure indicator.

12. The IHS of claim 9 wherein:

the data module is further configured to obtain pre-established failure data based upon one or more hardware characteristics of the physical drives implementing the logical storage device; and

the assessment module is further configured to modify the determined likelihood of failure of the logical storage device using the obtained pre-established failure data.

13. The IHS of claim 12 wherein the indication of the likelihood of failure is a high, medium, or low failure indicator and the assessment module is further configured to:

modify the indication to be one of high-plus, medium-plus, or low-plus using the pre-established failure data.

14. The IHS of claim 12 wherein the pre-established failure data based upon one or more hardware characteristics of the physical drives implementing the logical storage device comprises at least one of:

storage device size;

storage device speed;

storage device class; and

RAID type.

15. A non-transitory computer readable medium having stored thereon a sequence of instructions which, when loaded and executed by a processor coupled to an apparatus, causes the apparatus to:

obtain, in computer memory, data regarding reads and writes committed by an operating system to a logical storage device, the logical storage device implemented by a plurality of independent physical drives in a RAID configuration;

access the data in the computer memory and determine a normalized duty cycle for each physical drive of the logical storage device as a function of the accessed data regarding reads and writes committed by the operating system and the RAID configuration, each duty cycle corresponding to a total number of reads and writes of a respective physical drive in the plurality of physical drives and, wherein determining the normalized duty cycle for each physical drive as a function of the RAID configuration includes determining a respective total number of reads and writes of each physical drive based on a number of reads and writes to each respective physical drive for each read and write committed by the operating system to the logical storage device wherein, the number of reads and writes to each physical drive for each read and write committed by the operating system is a result of the RAID configuration of the physical drives;

determine a likelihood of failure of the logical storage device based on values of the duty cycles determined, wherein higher duty cycle indicates increased likelihood of failure;

populate a database with an indication of the likelihood of failure of the logical storage device determined;

determine a likelihood of failure for each physical drive in the plurality of physical drives based on the duty cycles determined; and

replace at least one of the physical drives based on the likelihood of failures determined for each physical drive.