Drive health monitoring with provisions for drive probation state and drive copy rebuild
The present disclosure is directed to a system and method for monitoring drive health. A method for monitoring drive health may comprise: a) conducting a predictive fault analysis for at least one drive of a RAID; and b) copying data from the at least one drive of the RAID to a replacement drive according to the predictive fault analysis. A system for monitoring drive health may comprise: a) means for conducting a predictive fault analysis for at least one drive of a RAID; and b) means for copying data from the at least one drive of the RAID to a replacement drive according to the predictive fault analysis.
1. A system comprising:
means for conducting a predictive fault analysis for at least one drive of a redundant array of independent drives (RAID), wherein the means for conducting a predictive fault analysis for at least one drive of a redundant array of independent drives (RAID) comprises:
means for computing a drive-reliability metric for the at least one drive of the RAID, wherein the means for computing a drive-reliability metric for the at least one drive of the RAID comprises:
means for disregarding at least a portion of the drive-reliability metric according to an IO channel disturbance independent of the function of the at least one drive of the RAID; and
means for copying data from the at least one drive of the RAID to a replacement drive when the number of times the drive reliability metric passes the first threshold value passes a second threshold value.
2. The system of claim 1 , wherein the means for computing a drive-reliability metric for the at least one drive of the RAID comprises:
means for computing a time between an input/output (IO) request and a completion of the IO request.
3. The system of claim 1 , wherein the means for computing a drive-reliability metric for the at least one drive of the RAID comprises:
means for computing a time between a completion of a first input/output (IO) request and a completion of a second IO request.
4. The system of claim 1 , wherein the means for computing a drive-reliability metric for the at least one drive of the RAID comprises:
means for comparing the drive reliability metric to a rate-based threshold value.
5. The system of claim 1 , wherein the means for computing a drive-reliability metric for the at least one drive of the RAID comprises:
means for comparing the drive reliability metric to a user-defined threshold value.
6. The system of claim 1 , wherein the means for disregarding at least a portion of the drive-reliability metric according to an IO channel disturbance independent of the function of the at least one drive of the RAID comprises:
means for disregarding at least a portion of the drive-reliability metric according to an IO channel disturbance associated with at least one of a channel initialization, a channel communication disruption, or a channel exception that delays completion of an IO request.
7. The system of claim 1 , further comprising:
means for redirecting IO requests addressed to the at least one drive in the RAID to the replacement drive.
8. The system of claim 1 , further comprising:
means for reconstructing data of the at least one drive in the RAID from the replacement drive.
9. The system of claim 1 , further comprising:
means for storing at least one of RAID state data, RAID control data, or RAID configuration data to a non-RAID drive.
10. The system of claim 1 , further comprising:
means for verifying at least one of a read or write operation to the at least one drive of the RAID utilizing redundant RAID data.
11. A computer-readable medium comprising computer readable instructions for execution on a processor which, when executed on a processor, cause a computing device to execute a process, the process comprising:
conducting a predictive fault analysis for at least one drive of a redundant array of independent drives (RAID), wherein the conducting a predictive fault analysis for at least one drive of a redundant array of independent drives (RAID) comprises:
computing a drive-reliability metric for the at least one drive of the RAID, wherein the computing a drive-reliability metric for the at least one drive of the RAID comprises:
means for disregarding at least a portion of the drive-reliability metric according to an IO channel disturbance independent of the function of the at least one drive of the RAID; and
copying data from the at least one drive of the RAID to a replacement drive when the number of times the drive reliability metric passes the first threshold value passes a second threshold value.
12. A method comprising:
conducting a predictive fault analysis for at least one drive of a redundant array of independent drives (RAID), wherein the conducting a predictive fault analysis for at least one drive of a redundant array of independent drives (RAID) comprises:
computing a drive-reliability metric for the at least one drive of the RAID, wherein the computing a drive-reliability metric for the at least one drive of the RAID comprises:
disregarding at least a portion of the drive-reliability metric according to an 10 channel disturbance independent of the function of the at least one drive of the RAID; and
copying data from the at least one drive of the RAID to a replacement drive when the number of times the drive reliability metric passes the first threshold value passes a second threshold value.
13. The method of claim 12 , wherein the computing a drive-reliability metric for the at least one drive of the RAID comprises:
computing a time between an input/output (IO) request and a completion of the IO request.
14. The method of claim 12 , wherein the computing a drive-reliability metric for the at least one drive of the RAID comprises:
computing a time between a completion of a first input/output (IO) request and a completion of a second IO request.
15. The method of claim 12 , wherein the computing a drive-reliability metric for the at least one drive of the RAID comprises:
comparing the drive reliability metric to a rate-based threshold value.
16. The method of claim 12 , wherein the computing a drive-reliability metric for the at least one drive of the RAID comprises:
comparing the drive reliability metric to a user-defined threshold value.
17. The method of claim 12 , wherein the disregarding at least a portion of the drive-reliability metric according to an IO channel disturbance independent of the function of the at least one drive of the RAID comprises:
disregarding at least a portion of the drive-reliability metric according to an IO channel disturbance associated with at least one of a channel initialization, a channel communication disruption, or a channel exception that delays completion of an IO request.
18. The method of claim 12 , further comprising:
redirecting IO requests addressed to the at least one drive in the RAID to the replacement drive.
19. The method of claim 12 , further comprising:
reconstructing data of the at least one drive in the RAID from the replacement drive.
20. The method of claim 12 , further comprising:
storing at least one of RAID state data, RAID control data, or RAID configuration data to a non-RAID drive.
21. The method of claim 12 , further comprising:
verifying at least one of a read or write operation to the at least one drive of the RAID utilizing redundant RAID data.