CN108520762A - Batch hard disk accelerated degradation test method and device under a kind of vibration environment - Google Patents
Batch hard disk accelerated degradation test method and device under a kind of vibration environment Download PDFInfo
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Abstract
The present invention relates to hard disk reliability testing fields, are in particular batch hard disk accelerated degradation test method and device under a kind of vibration environment, including three parts：It formulates hard disk performance degraded data acquisition scheme, formulate stress application scheme and design batch device for fixing hard disk.The present invention uses the data acquisition modes of the real-time synchronization of concentrating type, and can guarantee that hard disk operational performance is unaffected；Based on cephalic disc wear degradation mechanism, it is proposed that vibration induced hard disk accelerates degeneration method；By carrying out mould measurement to hard disk and accelerating experiment of knowing the real situation of degenerating, vibration start-stop frequency and order of magnitude are determined respectively, obtains stress and applies scheme；The stack device for fixing hard disk of the present invention can meet batch hard disk experiment demand, and can ensure that tested hard disk institute excited target is identical.Therefore the present invention can realize that batch hard disk is comparatively fast degenerated, and can significantly decrease the batch hard disk accelerated aging time, reduce experimentation cost, shorten the R＆D cycle, thus have larger promotional value.
Description
Technical field
The present invention relates to hard disk reliability testing field, more particularly to batch hard disk accelerates examination of degenerating under a kind of vibration environment
Test method and device.
Background technology
Accelerated life test (ALT) is whether evaluation product reaches highly reliable and long-life demand unique method.Accelerate
There are three types of different methods for life test：First, increasing the frequency of use of tested products in normal working conditions；Second is that will be by
Trial product is placed in the condition harsher than under normal condition and works；Third, for certain degradation mechanism of tested products such as machinery
The abrasion of component applies accelerated stress, this is accelerated degradation test (ADT).
In hard disk reliability testing field, conventional method is this kind of highly reliable for hard disk, for Long Life Products, limited
In time, it is difficult to obtain enough fail datas by accelerated life test；In addition, conventional method is in use of information side
There are essential defects in face, it is difficult to utilize the information about product failure process during experiment；It is traditional based on the out-of-service time
Although accelerated life test shows well under Conditions of General Samples, have in modern industrial production " multi items, small lot, fast
Under the characteristics of fast-growing production ", it is difficult to solve the problems, such as System in Small Sample Situation；Also, existing hard disk accelerated life test, majority are to be directed to firmly
The a certain component of disk is carried out, and has no and implements accelerated degradation test to hard disk integral working.
Invention content
The present invention is directed to the deficiency of existing hard disk accelerated degradation test technology, it is proposed that batch hard disk under a kind of vibration environment
Accelerated degradation test method and device, the present invention are used as the effective means for accelerating hard disk overall performance to degenerate by mechanical oscillation,
Multiple hard disks can be realized simultaneously and accelerate to degenerate, can effectively reduced hard disk reliability test period and cost, test simultaneously
Environment and operation are also fairly simple.
To achieve the above objectives, the technical solution adopted by the present invention is as follows：
Batch hard disk accelerated degradation test method under a kind of vibration environment, process are as follows：
Mould measurement is carried out to several hard disks, the resonant frequency of all hard disks is counted, is determined by all resonant frequencies
The vibration swept frequency range of batch accelerated degradation test；Several hard disks are carried out using vibration to accelerate experiment of knowing the real situation of degenerating, count institute
There is hard disk to accelerate corresponding vibration amplitude of degenerating, the vibration width of batch accelerated degradation test is determined by all vibration amplitudes
Value；
Vibrating swept frequency range and under the conditions of vibration amplitude, vibration is carried out at the same time to multiple hard disks, in vibration processes, cluster
The real-time synchronization of formula acquires and records the S.M.A.R.T. supplemental characteristics of all hard disks；
Reach defined threshold value when the defects of S.M.A.R.T. supplemental characteristics of a certain hard disk grow list value, then judges
The hard disk fails；After a certain hard disk fails, stop the S.M.A.R.T. supplemental characteristics for acquiring the hard disk, until institute
There is hard disk to fail.
The process of hard disk mould measurement is as follows：
Hard disk is fixed on a vibration table, hard disk is applied with frequency sweep mode and is vibrated, while with laser doppler vialog
The frequency response curve and the vibration shape of recording disk Motor Base determines hard disk by comparing each first order modes of hard disk Motor Base
Motor Base first natural frequencies；
Each hard disk Motor Base first natural frequencies are counted, and determine the vibration frequency in batch accelerated degradation test,
And vibration swept frequency range delimited according to vibration frequency.
Several hard disks are carried out using vibration to accelerate experiment of knowing the real situation of degenerating, all hard disks is counted and accelerates corresponding shake of degenerating
Dynamic amplitude, determines that the process of the vibration amplitude of batch accelerated degradation test is as follows by all vibration amplitudes：
Hard disk is fixed on a vibration table, under shake table frequency sweep mode, vibration stress amplitude is gradually turned up, record respectively shakes
The S.M.A.R.T. supplemental characteristics of hard disk and the lower hard disk of each vibration stress value effect is acquired during dynamic stress value acts on
S.M.A.R.T. parameter change rate；
The S.M.A.R.T. parameter change rates of the lower hard disk of more each vibration stress value effect again, and according to hard disk
S.M.A.R.T. parameter change rate divides vibration test stress levels level to vibration amplitude, and each stress levels level corresponds to one
A vibration amplitude；
S.M.A.R.T. parameter change rates and test period duration further according to hard disk require to choose vibration test stress etc.
Grade is horizontal, and shakes using the horizontal corresponding vibration amplitude of the stress levels as being carried out at the same time accelerated degradation test to multiple hard disks
Dynamic amplitude.
Stress levels are divided horizontally into 3, respectively low stress hierarchy level, middle stress levels level and high stress grade
Level, the horizontal vibration amplitude corresponding with high stress hierarchy level of low stress hierarchy level, middle stress levels be respectively 0.2g,
0.3g and 0.5g.
The applying mode of vibration stress is constant stress applying mode, stepstress applying mode and pulsating stress application side
The combination of one or more of formula.
The real-time synchronization acquisition of concentrating type and the S.M.A.R.T. supplemental characteristics for recording all hard disks include：Defect growth arranges
Table；Miscount is wrongly write in the non-delay corrections of 02_0000；02_0001 delay corrections wrongly write miscount；02_0002 adds up write error；
02_0003 cumulative correction write errors；02_0004 adds up algorithm and corrects write error；02_0005 adds up write verse number；02_0006 is tired
Count not recoverable write error；The non-delay corrections of 03_0000 misread miscount；03_0001 delay corrections misread miscount；03_
0002 accumulative read error；03_0003 cumulative correction read errors；03_0004 adds up algorithm and corrects read error；03_0005 is accumulative to be read
Byte number；The accumulative not recoverable read errors of 03_0006；The non-delay corrections of 04_0000 inversely misread miscount；04_0001 postpones
Correction inversely misreads miscount；04_0002 adds up reverse read error；The reverse read error of 04_0003 cumulative corrections；04_0004 is tired
Calculating method corrects reverse read error；04_0005 adds up reverse reading bytes；The accumulative not reverse read errors of recoverable of 04_0006.
Batch hard disk accelerated degradation test device under a kind of vibration environment, including hard disc clamping device, server, PC systems and shake
Dynamic platform, server are connect by data line with PC systems；
Hard disc clamping device includes connecting plate and several clamp block groups, and the bottom of connecting plate is connect with shake table, several folders
Tool block group is uniformly distributed in the upper surface of connecting plate and is fixedly connected with connecting plate, and each clamp block group includes two symmetrical
Clamp block, the space between two clamp blocks of each clamp block group is used to place the hard disk by least one piece of hard disk forms
Group；
After hard disk groups are placed between two clamp blocks, the both ends of all hard disks are fixed with two clamp blocks respectively to be connected
It connects, and all hard disks are connect by data line with server；
Shake table：For all hard disks to being connected on hard disc clamping device and hard disc clamping device simultaneously according to default vibration frequency and
Vibration amplitude applies vibration；
Server：The S.M.A.R.T. supplemental characteristics of all hard disks are acquired and recorded for the real-time synchronization of concentrating type；
PC systems：Pass through for operation data acquisition software and storage hard disk S.M.A.R.T. supplemental characteristics, PC systems
Data acquisition software sends out data acquisition instructions to server, and server based on data acquisition instructions acquire hard disk
S.M.A.R.T. supplemental characteristic.
It is clearance fit between the side wall of hard disk and two clamp blocks, clamp block is opposite with the threaded hole on hard disk side wall
The position answered offers through-hole, and the bolt for hard disk and clamp block to link together is provided in through-hole；
All hard disks are that stack places form, two neighboring hard disk face in each hard disk groups.
The present invention has the advantages that：
The present invention is based on cephalic disc wear degradation mechanism, carry out mould measurement to several hard disks, and count all hard disks
Resonant frequency；Several hard disks are carried out using vibration to accelerate experiment of knowing the real situation of degenerating, and counts all hard disks and accelerates corresponding to degeneration
Vibration amplitude, then determine by all resonant frequencies the vibration swept frequency range of batch accelerated degradation test, pass through all vibrations
Amplitude determines the vibration amplitude of batch accelerated degradation test；It, will be above-mentioned when formally carrying out accelerated degradation test to batch hard disk
The swept frequency range and vibration amplitude of acquisition are carried out at the same time vibration as vibration condition, to multiple hard disks, in vibration processes, concentrating type
Real-time synchronization acquisition and record the S.M.A.R.T. supplemental characteristics of all hard disks；After a certain hard disk fails, stop adopting
Collect the S.M.A.R.T. supplemental characteristics of the hard disk until all hard disks fail；The present invention is answered using mechanical oscillation as acceleration
Power, and vibration is applied on hard disk with frequency sweep mode, to make hard disk resonate, increase contact of the hard disc magnetic head with magnetic disc
Probability, and then accelerate the abrasion of hard disc head dish, the final ideal effect for obtaining hard disk performance fast degradation；Test result shows logical
The method for crossing the present invention can realize that batch hard disk is comparatively fast degenerated, significant to reduce the hard disk reliability testing time, therefore can
Experimentation cost is reduced, the R＆D cycle is shortened；And by testing the parameter obtained in the process, experiment can be provided for similar experiment
Parameter basis for selecting is reduced or avoided similar product and repeats hard disk mould measurement when carrying out degradation experiment and examination of knowing the real situation
It tests, experiment process can be shortened, and further shorten the degradation experiment time, to sum up, the present invention has larger promotional value.
The batch hard disk accelerated degradation test device of the present invention by hard disc clamping device can primary batch clamping polylith hard disk,
The quantity of hard disk sample when hard disk degradation experiment therefore can be substantially improved, so as to greatly shorten hard disk accelerated degradation test
Total duration；All hard disks on hard disc clamping device are connect by data line with server, by hard disc clamping device and are owned
The overall structure that hard disk connects into is connect with shake table, and shake table can be all hard to what is connected on hard disc clamping device and hard disc clamping device
Disk applies vibration according to default vibration frequency and vibration amplitude simultaneously；During shake table applies vibration stress, server
The real-time synchronization acquisition for capableing of concentrating type and the S.M.A.R.T. supplemental characteristics for recording all hard disks, server connect with PC systems
It connects, PC systems can obtain the S.M.A.R.T. supplemental characteristics for acquiring and recording all hard disks in server；To sum up, of the invention
Device, which can simultaneously realize multiple hard disks, to be accelerated to degenerate, and can effectively reduce hard disk reliability test period and cost, simultaneously
The operation of experimental enviroment, apparatus structure and device is also fairly simple.
Description of the drawings
Fig. 1 is the main flow chart of batch hard disk accelerated degradation test scheme of the present invention；
Fig. 2 is that hard disk performance of the present invention accelerates degeneration schematic device；
Fig. 3 is that the present invention formulates stress application scheme main flow chart；
Fig. 4 is the first-order bending vibation mode picture that the present invention carries out hard disk when hard disk mould measurement；
Fig. 5 is the overall structure diagram after hard disc clamping device of the present invention batch installation hard disk.
In figure, 201- hard disc clamping devices, 202- servers, 203-PC systems, 401- clamp blocks, 402- connecting plates, 403- is hard
Disk.
Specific implementation mode
To make the purpose of the present invention and technical solution be more clearly understood, the present invention is done with reference to the accompanying drawings and embodiments
It is further to be described in detail.
As shown in Figure 1, the stack batch hard disk accelerated degradation test scheme under the vibration environment of the present invention includes as follows
Step：
Hard disk performance degraded data acquisition scheme is formulated, realizes the real-time synchronization acquisition hard disk S.M.A.R.T. of concentrating type
(Self-Monitoring, Analysis and Reporting Technology) supplemental characteristic；
Wherein, S.M.A.R.T. supplemental characteristics include：Defect growth list；Miscount is wrongly write in the non-delay corrections of 02_0000；
02_0001 delay corrections wrongly write miscount；02_0002 adds up write error；02_0003 cumulative correction write errors；02_0004 is accumulative
Algorithm corrects write error；02_0005 adds up write verse number；The accumulative not recoverable write errors of 02_0006；The non-delay schools 03_0000
Just misread miscount；03_0001 delay corrections misread miscount；03_0002 adds up read error；03_0003 cumulative corrections are misread
Accidentally；03_0004 adds up algorithm and corrects read error；03_0005 adds up reading bytes；The accumulative not recoverable read errors of 03_0006；
The non-delay corrections of 04_0000 inversely misread miscount；04_0001 delay corrections inversely misread miscount；04_0002 is accumulative reverse
Read error；The reverse read error of 04_0003 cumulative corrections；04_0004 adds up algorithm and corrects reverse read error；04_0005 adds up inverse
To reading bytes；The accumulative not reverse read errors of recoverable of 04_0006；
It formulates stress and applies scheme：Resonant frequency obtained by hard disk mould measurement is counted, is determined by gained resonant frequency
Vibration swept frequency range when batch hard disk accelerated degradation test；Statistics hard disk accelerates the vibration amplitude of experiment of knowing the real situation of degenerating, and passes through
The vibration amplitude of experiment of knowing the real situation determines vibration amplitude when batch hard disk accelerated degradation test；
Stack hard disc clamping device 1 when designing batch hard disk accelerated degradation test for Fixed disk：In order to make hard disk and
Shake table forms rigid connection, and in conjunction with hard disk own structural characteristics, using the existing threaded hole of hard disk, design is a set of for fixing
The hard disc clamping device 1 of batch hard disk；
Build data collecting system and testing stand：Apply scheme and hard disc clamping device beam worker in data acquisition plan, stress
After the completion of making all, carries out experimental enviroment and build；
Data acquire：After experimental enviroment is put up, formal batch hard disk of carrying out accelerates experiment of degenerating, by hard to batch
Disk carries out vibration test, and data collection task is carried out to hard disk while vibration test, to acquire hard disk S.M.A.R.T. ginsengs
Number data；It when the defect growth list value of a certain hard disk reaches defined threshold value, decides that the hard disk is failed, at once will
The hard disk exits experiment and stops acquiring the S.M.A.R.T. supplemental characteristics of the hard disk；
As shown in Figure 2 and Figure 5, batch hard disk accelerated degradation test device under vibration environment of the invention, including hard disk folder
Tool 201, server 202, PC systems 203 and shake table, server 202 are connect by data line with PC systems 203；
Hard disc clamping device 201 includes connecting plate 402 and several clamp block groups, and the bottom of connecting plate 402 is connect with shake table,
Several clamp block groups are uniformly distributed in the upper surface of connecting plate 402 and are fixedly connected with connecting plate 402, each clamp block group packet
Two symmetrical clamp blocks 401 are included, the space between two clamp blocks 401 of each clamp block group is for placing by least
The hard disk groups of one piece of hard disk composition, all hard disks 403 are that stack places form in each hard disk groups, and two neighboring hard disk is just
It is right；The number for increasing clamp block group achieves that the fixation of batch hard disk；
Clamp block 401 offers through-hole in position corresponding with the threaded hole on 403 side wall of hard disk, is provided in through-hole
Bolt for hard disk 403 and clamp block 401 to link together；
After hard disk groups are placed between two clamp blocks 401, it is between the side wall of hard disk 403 and two clamp blocks 401
The both ends of clearance fit, all hard disks 403 are bolted to connection with two clamp blocks 401 respectively, and all hard disks 403 are led to
Data line is crossed to connect with server 202；
The shake table of the present invention selects eastern water chestnut shake table, for the institute to being connected on hard disc clamping device 201 and hard disc clamping device 201
There is hard disk 403 to apply vibration according to default vibration frequency and vibration amplitude simultaneously；
Server acquires and records the S.M.A.R.T. supplemental characteristics of all hard disks for the real-time synchronization of concentrating type；
PC systems 203 are used for operation data acquisition software and storage hard disk S.M.A.R.T. supplemental characteristics, PC systems 203
Data acquisition instructions are sent out to server 202 by data acquisition software, server 202 acquires hard disk according to data acquisition instructions
S.M.A.R.T. supplemental characteristics.
Preferably, it is bolted between connecting plate 402 and clamp block 401, connecting plate 402, clamp block 401 and hard disk
After 403 are connected as an overall structure, it is ensured that enough rigidity, to ensure that each piece of hard disk institute excited target is identical.
With reference to Fig. 2 and Fig. 5, on a vibration table, i.e., often the present invention can simultaneously be fixed 20 pieces of hard disks by hard disc clamping device 1
A hard disk groups stack two pieces of hard disks of setting, when hard disk is fixed on hard disc clamping device 1, hard disk forward direction setting, when the magnetic of hard disk
On the contrary head is upper, then be the reversed of hard disk, it is specified that the state is the forward direction of hard disk when magnetic disc is under, in accelerated degradation test,
All hard disks can be positive or oppositely positioned simultaneously simultaneously, using SAS (Serial Attached SCSI) data lines by hard disk 403
It is connect with server 202；
The present invention's, server 202 is the data collecting system being composed of multiple single-borad computers, and hard disk 403 passes through
SAS data lines are connect with single-borad computer, and data collecting system acquires S.M.A.R.T. parameters in real time using hard drive internal sensor
Data, additionally it is possible to be issued to hard disk by single-borad computer and read S.M.A.R.T. data commands, and by the S.M.A.R.T. of reading
Data packing is temporarily stored into single-borad computer；
The S.M.A.R.T. supplemental characteristics being temporarily stored on single-borad computer are transferred in PC systems 203 for testing crew
It uses.
As shown in figure 3, the present invention is realized when formulating stress embodiment by following steps：
Step 301, hard disk degradation mechanism is analyzed：On the basis of ongoing magnetic head and magnetic disc accelerated wear test
On, by carrying out fault mode, mechanism and effect analysis (FMMEA) to hard disk, obtain incipient fault pattern, failure cause, event
Hindering mechanism and failure influences, and identifies critical failure pattern and the priority of failure mechanism, the abrasion with highest priority
Failure mechanism will be used for hard disk accelerated degradation test；
Step 302, accelerated stress form is determined：It only can just be sent out in the case where magnetic head and magnetic disc contact due to wearing
It is raw, as long as therefore in hard disk operation process, increasing magnetic head and magnetic disc contact probability, hard disk performance will gradually degenerate, and
As hard disk magnetic recording density constantly increases, magnetic head and magnetic disc space are constantly compressed into Nano grade, and therefore, the present invention uses
Vibration stress goes induction hard disk to accelerate to degenerate；
Step 303, hard disk mould measurement：Carry out hard disk accelerated degradation test by vibration and needs known vibration frequency, because
This prepares several pieces of hard disks and is used to determine vibration test resonant frequency, for preparing 6 pieces of hard disks, wherein 3 pieces are Seagate hard disk,
3 pieces are Hitachi's hard disk；Mould measurement object determined by the present invention is the installation foundation Motor Base of hard disk spindle motor, first
First the pcb board of hard disk is dismantled, then by every piece of hard disk, fixation is vibrated with frequency sweep mode on a vibration table one by one, and by how general
The frequency response curve and its vibration shape for strangling laser vibration measurer (LDV) recording disk Motor Base, by comparing hard disk Motor Base
Each first order mode determines hard disk Motor Base first natural frequencies (with reference to Fig. 4)；It is intrinsic to count each hard disk Motor Base single orders
Frequency, and consider the influence of the factors such as hard disk brand, production batch, manufacturing process and measurement error, it is actually measured
There are deviations for hard disk Motor Base mode；Accordingly, it is determined that carry out follow-up vibration test with frequency sweep mode, pass through 6 pieces of hard disks
Resonant frequency (or intrinsic frequency) determines vibration frequency, and vibration swept frequency range delimited further according to vibration frequency.Such as determine vibration
When frequency, the resonant frequency of 6 pieces of hard disks is close to 1.3kHz, then using 1.3kHz as vibration frequency, or being total to 6 pieces of hard disks
The mean value of vibration frequency is as vibration frequency；When determining swept frequency range, according to vibration frequency, the maximum resonance of hard disk in 6 pieces of hard disks
Frequency and minimum resonant frequencies determine that swept frequency range, the upper limit value of swept frequency range are not more than maximum resonant frequency, lower limiting value
Not less than minimum resonant frequencies, such as when vibration frequency is 1.3kHz, determine that swept frequency range is：1.25kHz~1.45kHz；
Step 304, hard disk accelerates experiment of knowing the real situation of degenerating：Vibration amplitude is another input parameter of vibration test, can be passed through
Experiment of knowing the real situation obtains, and chooses a small amount of hard disk for experiment of knowing the real situation, hard disk is fixed on a vibration table, in shake table frequency sweep mode
Under, vibration stress amplitude is gradually turned up, the S.M.A.R.T. supplemental characteristics of hard disk during each vibration stress value acts on are recorded, into one
S.M.A.R.T. supplemental characteristic change rates under more each vibration stress value effect of step, and according to the S.M.A.R.T. parameters of hard disk
Change rate divides vibration test stress levels level to vibration amplitude, and each stress levels level corresponds to a vibration amplitude；
When applying low stress, S.M.A.R.T. supplemental characteristic change rates are small to show that hard disk needs to fail for a long time；
When stress in application, S.M.A.R.T. supplemental characteristic change rates are moderate to show that hard disk can fail in a long time；Work as application
When high stress, S.M.A.R.T. supplemental characteristics change rate shows that greatly hard disk can be fail in a short time；
Therefore it needs to be required to choose vibration test according to the S.M.A.R.T. parameter change rates and test period duration of hard disk
Stress levels are horizontal, and are carried out at the same time acceleration degeneration examination using the horizontal corresponding vibration amplitude of the stress levels as to multiple hard disks
The vibration amplitude tested；
Under normal circumstances, the applying mode of vibration stress is constant stress applying mode, stepstress applying mode and follows
The combination of one or more of Zernike annular polynomial applying mode；Stress levels are divided horizontally into 3, respectively low stress grade water
Flat, middle stress levels level and high stress hierarchy level, low stress hierarchy level, middle stress levels level and high stress grade water
It is respectively 0.2g, 0.3g and 0.5g to put down corresponding vibration amplitude.
Claims (9)
1. batch hard disk accelerated degradation test method under a kind of vibration environment, which is characterized in that process is as follows：
Mould measurement is carried out to several hard disks, counts the resonant frequency of all hard disks, batch is determined by all resonant frequencies
The vibration swept frequency range of accelerated degradation test；Several hard disks are carried out using vibration to accelerate experiment of knowing the real situation of degenerating, count all hard
Disk accelerates corresponding vibration amplitude of degenerating, and the vibration amplitude of batch accelerated degradation test is determined by all vibration amplitudes；
Vibrating swept frequency range and under the conditions of vibration amplitude, vibration is carried out at the same time to multiple hard disks, in vibration processes, concentrating type
Real-time synchronization acquires and records the S.M.A.R.T. supplemental characteristics of all hard disks；
When the defects of S.M.A.R.T. supplemental characteristics of a certain hard disk growth list value reaches defined threshold value, then judgement should
Hard disk fails；After a certain hard disk fails, stop the S.M.A.R.T. supplemental characteristics for acquiring the hard disk, until all
Hard disk fails.
2. batch hard disk accelerated degradation test method under a kind of vibration environment according to claim 1, which is characterized in that hard
The process of disk mould measurement is as follows：
Hard disk is fixed on a vibration table, hard disk is applied with frequency sweep mode and is vibrated, while being recorded with laser doppler vialog
The frequency response curve and the vibration shape of hard disk Motor Base determines hard disk Motor by comparing each first order modes of hard disk Motor Base
Base first natural frequencies；
Each hard disk Motor Base first natural frequencies are counted, and determine the vibration frequency in batch accelerated degradation test, and root
Vibration swept frequency range delimited according to vibration frequency.
3. batch hard disk accelerated degradation test method under a kind of vibration environment according to claim 1, which is characterized in that adopt
Several hard disks are carried out with vibration to accelerate experiment of knowing the real situation of degenerating, all hard disks is counted and accelerates corresponding vibration amplitude of degenerating, lead to
It crosses all vibration amplitudes and determines that the process of the vibration amplitude of batch accelerated degradation test is as follows：
Hard disk is fixed on a vibration table, under shake table frequency sweep mode, vibration stress amplitude is gradually turned up, records each vibration and answers
The S.M.A.R.T. supplemental characteristics of hard disk and the S.M.A.R.T. of the lower hard disk of each vibration stress value effect is acquired during force value acts on
Parameter change rate；
The S.M.A.R.T. parameter change rates of the lower hard disk of more each vibration stress value effect again, and according to the S.M.A.R.T. of hard disk
Parameter change rate divides vibration test stress levels level to vibration amplitude, and each stress levels level corresponds to a vibration width
Value；
S.M.A.R.T. parameter change rates and test period duration further according to hard disk require to choose vibration test stress levels water
It is flat, and using the horizontal corresponding vibration amplitude of the stress levels as the vibration width that multiple hard disks are carried out at the same time with accelerated degradation test
Value.
4. batch hard disk accelerated degradation test method under a kind of vibration environment according to claim 3, which is characterized in that answer
Power hierarchy level is divided into 3, respectively low stress hierarchy level, middle stress levels level and high stress hierarchy level, low to answer
The horizontal vibration amplitude corresponding with high stress hierarchy level of power hierarchy level, middle stress levels is respectively 0.2g, 0.3g and 0.5g.
5. batch hard disk accelerated degradation test method under a kind of vibration environment according to any one of claims 1-4,
It is characterized in that, the applying mode of vibration stress is that constant stress applying mode, stepstress applying mode and pulsating stress apply
The combination of one or more of mode.
6. batch hard disk accelerated degradation test method under a kind of vibration environment according to any one of claims 1-4,
It is characterized in that, the real-time synchronization acquisition of concentrating type and the S.M.A.R.T. supplemental characteristics for recording all hard disks include：02_0000 without
Delay correction wrongly writes miscount；02_0001 delay corrections wrongly write miscount；02_0002 adds up write error；02_0003 adds up school
Positive write error；02_0004 adds up algorithm and corrects write error；02_0005 adds up write verse number；The accumulative not recoverables of 02_0006 are write
Mistake；The non-delay corrections of 03_0000 misread miscount；03_0001 delay corrections misread miscount；03_0002 adds up read error；
03_0003 cumulative correction read errors；03_0004 adds up algorithm and corrects read error；03_0005 adds up reading bytes；03_0006 is tired
Count not recoverable read error；The non-delay corrections of 04_0000 inversely misread miscount；04_0001 delay corrections inversely misread error count
Number；04_0002 adds up reverse read error；The reverse read error of 04_0003 cumulative corrections；04_0004 adds up the reverse reading of algorithm correction
Mistake；04_0005 adds up reverse reading bytes；The accumulative not reverse read errors of recoverable of 04_0006.
7. batch hard disk accelerated degradation test device under a kind of vibration environment, which is characterized in that including hard disc clamping device (201), clothes
Business device (202), PC systems (203) and shake table, server (202) are connect by data line with PC systems (203)；
Hard disc clamping device (201) includes connecting plate (402) and several clamp block groups, and bottom and the shake table of connecting plate (402) connect
It connects, several clamp block groups are uniformly distributed in the upper surface of connecting plate (402) and are fixedly connected with connecting plate (402), each to press from both sides
It includes two symmetrical clamp blocks (401) to have block group, and the space between two clamp blocks (401) of each clamp block group is used
In placement by the hard disk groups that at least one piece of hard disk forms；
After hard disk groups are placed between two clamp blocks (401), the both ends of all hard disks (403) respectively with two clamp blocks
(401) it is fixedly connected, and all hard disks (403) are connect by data line with server (202)；
Shake table：For to all hard disks (403) connected on hard disc clamping device (201) and hard disc clamping device (201) while according to pre-
If vibration frequency and vibration amplitude apply vibration；
Server (202)：The S.M.A.R.T. supplemental characteristics of all hard disks are acquired and recorded for the real-time synchronization of concentrating type；
PC systems (203)：For operation data acquisition software and storage hard disk S.M.A.R.T. supplemental characteristics, PC systems
(203) data acquisition instructions are sent out to server (202) by data acquisition software, server (202) refers to according to data acquisition
Enable the S.M.A.R.T. supplemental characteristics of acquisition hard disk.
8. batch hard disk accelerated degradation test device under a kind of vibration environment according to claim 7, which is characterized in that hard
Between the side wall of disk (403) and two clamp blocks (401) be clearance fit, clamp block (401) on hard disk (403) side wall
The corresponding position of threaded hole offers through-hole, is provided in through-hole for hard disk (403) and clamp block (401) to be connected to one
The bolt risen.
9. batch hard disk accelerated degradation test device, feature exist under a kind of vibration environment according to claim 7 or 8
In all hard disks (403) are that stack places form, two neighboring hard disk face in each hard disk groups.
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