Dynamically adjusting power disturbance hold up times

Patent metadata

Field	Value
Publication number	US-9886356-B2
Application number	US-201615147380-A
Country	US
Kind code	B2
Filing date	May 5, 2016
Priority date	May 3, 2013
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

Power line disturbance hold up times are dynamically adjusted based on battery capacity of a plurality of batteries in a plurality of racks by determining which one of the plurality of racks has a fewest number of remaining batteries of the plurality of batteries having the battery capacity. A determination of an amount of the power line disturbance the one of the plurality of racks, having the fewest number of remaining batteries of the plurality of batteries with the battery capacity, is able to support.

First claim

What is claimed is:

1. A method for reducing power disturbance failover in a storage system having at least one uninterruptible power supply (UPS), by a processor device in a computing environment, comprising:
dynamically adjusting power line disturbance hold up times based on battery capacity of a plurality of batteries in a plurality of racks by determining which one of the plurality of racks has a fewest number of remaining batteries of the plurality of batteries having the battery capacity; and
determining an amount of the power line disturbance the one of the plurality of racks, having the fewest number of remaining batteries of the plurality of batteries with the battery capacity, is able to support.

2. The method of claim 1 , further including performing one of:
monitoring for a failure of one of the plurality of batteries,
repairing one of the plurality of batteries, and
adding at least one new battery to the plurality of batteries.

3. The method of claim 1 , further including setting the power line disturbance hold up time based on a number of remaining batteries of the plurality of batteries with the battery capacity in a surviving one of the at least one UPS.

4. The method of claim 1 , further including selecting the power line disturbance hold up time having a shortest hold up time in one of the plurality of racks.

5. The method of claim 1 , further including writing a new power line disturbance hold up time into a power controller.

6. The method of claim 1 , further including performing one of:
performing a repair operation on one of a battery in the plurality of batteries and the UPS,
waiting for at least one new battery of the plurality of batteries to charge for a predetermined time period,
determining if the at least one new battery of the plurality of batteries charged,
determining if the plurality of racks is able to support an increased power line disturbance hold up time, and
updating the power line disturbance hold up time upon adding at least one new battery to the plurality of batteries.

7. A system for reducing power disturbance failover in a storage system of a computing environment, the system comprising:
the storage system;
a plurality of racks in the storage system;
a plurality of batteries in the plurality of racks;
at least one uninterruptible power supply (UPS) in the storage system in association with the plurality of batteries and the plurality of racks;
a power controller in association with the at least one UPS; and
at least one processor device operable in the computing environment, wherein the at least one processor device:
dynamically adjusts power line disturbance hold up times based on battery capacity of a plurality of batteries in a plurality of racks by determining which one of the plurality of racks has a fewest number of remaining batteries of the plurality of batteries having the battery capacity; and
determines an amount of the power line disturbance the one of the plurality of racks, having the fewest number of remaining batteries of the plurality of batteries with the battery capacity, is able to support.

8. The system of claim 7 , wherein the at least one processor device performs one of:
monitoring for a failure of one of the plurality of batteries,
repairing one of the plurality of batteries, and
adding at least one new battery to the plurality of batteries.

9. The system of claim 7 , wherein the at least one processor device sets the power line disturbance hold up time based on a number of remaining batteries of the plurality of batteries with the battery capacity in a surviving one of the at least one UPS.

10. The system of claim 7 , wherein the at least one processor device selects the power line disturbance hold up time having a shortest hold up time in one of the plurality of racks.

11. The system of claim 7 , wherein the at least one processor device writes a new power line disturbance hold up time into the power controller.

12. The system of claim 7 , wherein the at least one processor device performs one of:
performing a repair operation on one of a battery in the plurality of batteries and the UPS,
waiting for at least one new battery of the plurality of batteries to charge for a predetermined time period,
determining if the at least one new battery of the plurality of batteries charged,
determining if the plurality of racks is able to support an increased power line disturbance hold up time, and
updates the power line disturbance hold up time upon adding at least one new battery to the plurality of batteries.

13. A computer program product for reducing power disturbance failover in a storage system having at least one uninterruptible power supply (UPS), by a processor device in a computing environment, the computer program product comprising a non-transitory computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:
an executable portion that dynamically adjusts power line disturbance hold up times based on battery capacity of a plurality of batteries in a plurality of racks by determining which one of the plurality of racks has a fewest number of remaining batteries of the plurality of batteries having the battery capacity; and
an executable portion that determines an amount of the power line disturbance the one of the plurality of racks, having the fewest number of remaining batteries of the plurality of batteries with the battery capacity, is able to support.

14. The computer program product of claim 13 , further including an executable portion that performs one of:
monitoring for a failure of one of the plurality of batteries,
repairing one of the plurality of batteries, and
adding at least one new battery to the plurality of batteries.

15. The computer program product of claim 13 , further including an executable portion that performs one of:
setting the power line disturbance hold up time based on a number of remaining batteries of the plurality of batteries with the battery capacity in a surviving one of the at least one UPS, and
selecting the power line disturbance hold up time having a shortest hold up time in one of the plurality of racks.

16. The computer program product of claim 13 , further including an executable portion that writes a new power line disturbance hold up time into the power controller.

17. The computer program product of claim 13 , further including an executable portion that performs one of:
performing a repair operation on one of a battery in the plurality of batteries and the UPS,
waiting for at least one new battery of the plurality of batteries to charge for a predetermined time period,
determining if the at least one new battery of the plurality of batteries charged, and
determining if the plurality of racks is able to support an increased power line disturbance hold up time, and
updating the power line disturbance hold up time upon adding at least one new battery to the plurality of batteries.

Assignees

• IBM

Inventors

• Du Mann
• Juan Ya Huey
• Juarez Larry
• Kraemer Brian C
• Martens Ronald D
• Qin Su
• Sorenson Todd C
• Xu Ji Qiu

Classifications

• H02J7/00

  Circuit arrangements for charging or discharging batteries or for supplying loads from batteries · CPC title

• H02J9/061

  for DC powered loads · CPC title

• G06F11/2015 Primary

  Redundant power supplies (power supply failure G06F1/30) · CPC title

• G06F1/30 Primary

  Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations (for resetting only G06F1/24) · CPC title

• G06F1/28

  Supervision thereof, e.g. detecting power-supply failure by out of limits supervision · CPC title