CN104317745A - SSD power down data protecting method based on system order control - Google Patents
SSD power down data protecting method based on system order control Download PDFInfo
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- CN104317745A CN104317745A CN201410537611.XA CN201410537611A CN104317745A CN 104317745 A CN104317745 A CN 104317745A CN 201410537611 A CN201410537611 A CN 201410537611A CN 104317745 A CN104317745 A CN 104317745A
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Abstract
The invention discloses an SSD power down data protecting method based on system order control. The SSD power down data protecting method is characterized in that a power down informing order is added for a system, a data backup operation and a power down informing order receiving and identifying operation are added for a controller of an SSD module, when the system detects that the power down of the system occurs, a backup power supply provides electricity for the system, the system shutdown preparing operation is started, the system sends out the power down informing order to the controller of the SSD module before the shutdown operation after the system shutdown preparing operation is finished, and the system shutdown operation is conducted in a certain delayed time period; the controller of the SSD module receives the power down informing order and immediately conducts the data backup operation, and the controller of the SSD module does not receive any other order of the system and stops all activities after the operation is finished. The power down informing order is added, the SSD is informed in advance, the SSD conducts the data backup work before the formal power down, the safety of the data is guaranteed, the extra SSD cost is not needed, the achieving way is simple, and the large-scale popularization and use is easy.
Description
Technical field
The present invention relates to power-down data protection technology, particularly a kind of method of the power-down data protection at the application scenarios that uses SSD to be memory device.
Background technology
In existing enterprise's level application, the security of data is very important, and SSD exists higher stability compared to magnetic disc type hard disk, and progressively a large amount of in data store uses.Although the electrical network of our country is greatly improved comparatively before at present; but situation about having a power failure suddenly still inevitably; the security of the unexpected power down of system to data is great destruction; have by introducing tank circuit, by the mode of large storage capacitor to realize unexpected power-down data protection in prior art.Due to the application of enterprise-level, the power consumption of system is all very large, larger space is needed to place large tank circuit, particularly bulky capacitor, existing memory device is all in past miniaturization evolution, therefore the requirement for structure space is also very high, is difficult to the lower large tank circuit placed that has living space; This memory circuit uses for a long time simultaneously, there is decay in the quality of storage capacitor, time has grown very difficult guarantee storage capacitor can provide sufficient charging time by the product life cycle ensureing whole SSD at the beginning of design always, and during power down, the security of data also just can not be guaranteed.
Summary of the invention
For above defect, the object of the invention is how not needing additionally to increase tank circuit, under existing structure space, and the security of SSD data during the system that ensures unexpected power down.
In order to overcome the above problems a kind of method that the present invention proposes SSD power-down data protection based on system command control, it is characterized in that system increases power down notification order, the controller of SSD module increases data backup operation and receive and identify power down notification command operation; When systems axiol-ogy occurs to system power failure, standby power supply is that system is powered; The beamhouse operation of start up system shutdown simultaneously, after system closedown beamhouse operation completes, before power-off operation, system sends power down notification order to the controller of SSD module, and carries out system closedown operation again after certain time delay; The controller of SSD module receives power down notification order, carries out data backup operation immediately, has operated controller no longer receiving system other order any of rear SSD module, has stopped activities; The time requirement of the electricity of the standby power supply at least complete shutdown of demand fulfillment system.
The method of the described SSD power-down data protection based on system command control, is characterized in that described power down notification order is for narration standard commands form.
The present invention by the backup battery that utilizes system itself and carry while guarantee security of system, by increasing power down notification order, prior notice SSD, SSD carries out data backup work before formal power down, ensure the security of data, do not need the cost additionally increasing SSD, implementation is simple, compatible good, be easy to large-scale promotion application.
Accompanying drawing explanation
Fig. 1 is the processing flow chart of method of the SSD power-down data protection controlled based on system command.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the processing flow chart of method of the SSD power-down data protection controlled based on system command.General System is all furnished with standby power supply and prevents power supply i.e. UPS, the security of system is ensured when unexpected power down occurs system, UPS general energy storage for power supply time is at about 10Min, and enterprise-oriented system completes power down preliminary work only needs 5min, if the time that will complete data backup for SSD equipment only needs about 20mS, the crucial energy storage at therefore UPS is the BACKUP TIME requirement that can meet SSD completely, and key is how SSD knows that system is about to power down occurs.
UPS monitoring system power supply, judges whether power down, and after power down occurs in power supply input, ups power can be powered by very first time adapter system, and notifies system power supply generation power down.When systems axiol-ogy occurs to system power failure, UPS is that system is powered; The beamhouse operation of start up system shutdown simultaneously, after system closedown beamhouse operation completes, before power-off operation, system sends power down notification order to the controller of SSD module, system also forbids doing any operation to SSD more afterwards, and carries out system closedown operation again after SSD data backup complete operation is waited in the time delay of at least 50ms; The controller of SSD module receives power down notification order, carries out data backup operation immediately, has operated controller no longer receiving system other order any of rear SSD module, has stopped activities, waiting system power down.
It is not the time delay fixed that the system that can be implemented as sends power down notification order to the controller of SSD module, but waits for whether SSD feedback completes backup operation yet; The controller of SSD module receives power down notification order, and carry out after data backup operation completes, the controller of SSD module is by completed for backup operation notice system, and system acceptance carries out power-off operation immediately after notice.
The backup of such SSD is more more reliable than relying on self energy storage, and safety, data security is more guaranteed.
Above disclosedly be only an embodiment of the present invention, certainly the interest field of basis can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (2)
1., based on a method for the SSD power-down data protection of system command control, it is characterized in that system increases power down notification order, the controller of SSD module increases data backup operation and receive and identify power down notification command operation; When systems axiol-ogy occurs to system power failure, standby power supply is that system is powered; The beamhouse operation of start up system shutdown simultaneously, after system closedown beamhouse operation completes, before power-off operation, system sends power down notification order to the controller of SSD module, and carries out system closedown operation again after certain time delay; The controller of SSD module receives power down notification order, carries out data backup operation immediately, has operated controller no longer receiving system other order any of rear SSD module, has stopped activities; The time requirement of the electricity of the standby power supply at least complete shutdown of demand fulfillment system.
2. the method for the SSD power-down data protection based on system command control according to claim 1, is characterized in that described power down notification order is for narration standard commands form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537611.XA CN104317745A (en) | 2014-10-13 | 2014-10-13 | SSD power down data protecting method based on system order control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410537611.XA CN104317745A (en) | 2014-10-13 | 2014-10-13 | SSD power down data protecting method based on system order control |
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| CN104317745A true CN104317745A (en) | 2015-01-28 |
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| CN201410537611.XA Pending CN104317745A (en) | 2014-10-13 | 2014-10-13 | SSD power down data protecting method based on system order control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107656830A (en) * | 2017-10-09 | 2018-02-02 | 郑州云海信息技术有限公司 | A kind of complete healthy method for inspecting, system and computer equipment for dodging system |
| CN110427279A (en) * | 2019-07-19 | 2019-11-08 | 深圳忆联信息系统有限公司 | A kind of method and system for the Raid parity data restoring to write band |
| WO2023185016A1 (en) * | 2022-03-29 | 2023-10-05 | 苏州浪潮智能科技有限公司 | Power supply method and device for storage array, and server |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110427279A (en) * | 2019-07-19 | 2019-11-08 | 深圳忆联信息系统有限公司 | A kind of method and system for the Raid parity data restoring to write band |
| CN110427279B (en) * | 2019-07-19 | 2023-02-10 | 深圳忆联信息系统有限公司 | Method and system for recovering Raid parity data of write stripe |
| WO2023185016A1 (en) * | 2022-03-29 | 2023-10-05 | 苏州浪潮智能科技有限公司 | Power supply method and device for storage array, and server |
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Application publication date: 20150128 |
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