APPARATUS, SYSTEM, AND METHOD FOR MANAGING LIFETIME OF A STORAGE DEVICE

• US 20120066439A1
• Filed: 10/13/2011
• Published: 03/15/2012
• Est. Priority Date: 09/09/2010
• Status: Active Grant

• Current Assignee: SanDisk Technologies LLC (Western Digital Corporation)
• Original Assignee: Fusion-IO Incorporated (Western Digital Corporation)
• Inventors: Fillingim, Jeremy
• Granted Patent: US 8,984,216 B2
• Time in Patent Office: Days
• US Class Current: 711/103
• CPC Class Codes: G06F 1/206 comprising thermal management
• CPC Class Codes: G06F 1/3221 of disk drive devices
• CPC Class Codes: G06F 1/3268 Power saving in hard disk drive
• CPC Class Codes: G06F 11/1008 in individual solid state devices G06F11/1004 takes precedence
• 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 11/3055 Monitoring arrangements for monitoring the status of the computing system or of the computing system component, e.g. monitoring if the computing system is on, off, available, not available error or fault processing without redundancy G06F11/0703; error detection or correction by redundancy in data representation G06F11/08; error detection or correction by redundancy in operation G06F11/14; error detection or correction by redundancy in hardware G06F11/16
• CPC Class Codes: G06F 11/3062 where the monitored property is the power consumption power management in a computing system G06F1/3203
• CPC Class Codes: G06F 11/3433 for load management allocation of a server based on load conditions G06F9/505; load rebalancing G06F9/5083; redistributing the load in a network by a load balancer H04L67/1029
• CPC Class Codes: G06F 11/3485 for I/O devices
• CPC Class Codes: G06F 12/0246 in block erasable memory, e.g. flash memory
• CPC Class Codes: G06F 2201/81 Threshold
• CPC Class Codes: G06F 2212/1036 Life time enhancement
• CPC Class Codes: G06F 3/0616 in relation to life time, e.g. increasing Mean Time Between Failures [MTBF]
• CPC Class Codes: G06F 3/0653 Monitoring storage devices or systems
• CPC Class Codes: G06F 3/0688 Non-volatile semiconductor memory arrays
• CPC Class Codes: G11C 16/30 Power supply circuits
• CPC Class Codes: G11C 16/3495 Circuits or methods to detect or delay wearout of nonvolatile EPROM or EEPROM memory devices, e.g. by counting numbers of erase or reprogram cycles, by using multiple memory areas serially or cyclically
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

An apparatus, system, and method are disclosed for managing lifetime for a data storage device. A target module determines a write bandwidth target for a data storage device. An audit module monitors write bandwidth of the data storage device relative to the write bandwidth target. A throttle module adjusts execution of one or more write operations on the data storage device in response to the write bandwidth of the data storage device failing to satisfy the write bandwidth target.

Claims

1. A method to manage lifetime for a data storage device, the method comprising:

determining a write bandwidth target for a data storage device;

monitoring write bandwidth of the data storage device relative to the write bandwidth target; and

adjusting execution of one or more write operations on the data storage device in response to the write bandwidth of the data storage device failing to satisfy the write bandwidth target.

2. The method of claim 1, further comprising dynamically adjusting the write bandwidth target based on a total amount of data written to the data storage device and an elapsed amount of a temporal lifetime for the data storage device such that the total amount of data written to the data storage device does not exceed a defined endurance rating for the data storage device within the temporal lifetime for the data storage device.

3. The method of claim 2, wherein the data storage device comprises a plurality of modular data storage elements and the elapsed amount of the temporal lifetime is one of, based on an oldest modular data storage element;

and determined separately for each modular data storage element.

4. The method of claim 1, wherein the write bandwidth comprises a moving average write bandwidth over a predefined period, the predefined period defines a window size for the moving average, and a sampling period defines a number of periodic write bandwidth samples within the window size that are included in the moving average.

5. The method of claim 1, further comprising,

verifying whether the write bandwidth of the data storage device satisfies the write bandwidth target in response to adjusting the execution of the one or more write operations;

and

readjusting execution of one or more subsequent write operations on the data storage device in response to verifying that the write bandwidth fails to satisfy the write bandwidth target in response to adjusting the execution of the one or more write operations.

6. The method of claim 1, further comprising,

monitoring a power consumption rate of the data storage device relative to a power consumption target;

and

adjusting execution of the one or more write operations on the data storage device in response to the power consumption rate of the data storage device failing to satisfy the power consumption target.

7. The method of claim 6, further comprising combining the adjustment of execution of the one or more write operations in response to the write bandwidth with the adjustment of execution of the one or more write operations in response to the power consumption into a single adjustment.

8. The method of claim 7, wherein combining the adjustment of execution of the one or more write operations in response to the write bandwidth with the adjustment of execution of the one or more write operations in response to the power consumption comprises selecting the largest adjustment as the single adjustment.

9. The method of claim 6, further comprising,

monitoring a temperature for the data storage device relative to a thermal ceiling;

and

adjusting execution of the one or more write operations on the data storage device in response to the temperature approaching the thermal ceiling.

10. The method of claim 9, further comprising combining the adjustment of execution of the one or more write operations in response to the write bandwidth, the adjustment of execution of the one or more write operations in response to the power consumption rate, and the adjustment of execution of the one or more write operations in response to the temperature into a single adjustment.

11. The method of claim 1, wherein adjusting execution of the one or more write operations comprises adjusting a frequency with which the one or more write operations execute on the data storage device.

12. The method of claim 11, wherein adjusting the frequency with which the one or more write operations execute comprises setting a timer value specifying a frequency with which hardware of the data storage device polls to verify that an operation has completed.

13. The method of claim 12, wherein the data storage device comprises a nonvolatile solid-state storage device, the one or more write operations comprise program operations, and the timer value comprises a tPROG wait time specifying a period of time between submitting a program command to a memory area of the data storage device and submitting a status command to the same memory area of the data storage device to verify that execution of the program command has completed.

14. The method of claim 11, wherein adjusting the frequency with which the one or more write operations execute comprises managing a submission frequency at which the one or more write operations are submitted to the data storage device for execution.

15. The method of claim 14, further comprising allowing one or more other operations to execute on the data storage device between submitting the one or more write operations to the data storage device for execution.

16. The method of claim 14, wherein managing the submission frequency comprises,

allowing a write operation to execute in response to an amount of time since a previous write operation satisfying the submission frequency;

and

delaying a write operation in response to the amount of time since a previous write operation failing to satisfy the submission frequency.

17. An apparatus to manage lifetime for a data storage device, the apparatus comprising:

a target module that determines a write bandwidth target for a data storage device;

an audit module that monitors write bandwidth of the data storage device relative to the write bandwidth target; and

a throttle module that adjusts execution of one or more write operations on the data storage device in response to the write bandwidth of the data storage device failing to satisfy the write bandwidth target.

18. The apparatus of claim 17, wherein the target module dynamically adjusts the write bandwidth target based on a total amount of data written to the data storage device and an elapsed amount of a temporal lifetime for the data storage device such that the total amount of data written to the data storage device does not exceed a defined endurance rating for the data storage device within the temporal lifetime for the data storage device.

19. A system to manage lifetime for a data storage device, the system comprising:

a data storage device;

a target module that determines a write bandwidth target for the data storage device;

an audit module that monitors write bandwidth of the data storage device relative to the write bandwidth target; and

a throttle module that adjusts execution of one or more write operations on the data storage device in response to the write bandwidth of the data storage device failing to satisfy the write bandwidth target.

20. The system of claim 19, further comprising a host device in communication with the data storage device, wherein at least a portion of one or more of the target module, the audit module, and the throttle module is part of a device driver for the data storage device installed on the host device.