| Hard disk air filter is the device to keep off solid | | | | make any direct contact with platters, but instead read |
| contaminants, like dust, pollen, etc., from its platters’ | | | | write data by magnetic sensations. This height is quite |
| surface and heads. Hard disk platters, being sensitive | | | | less to stand any dust particle, which is quite large as |
| to dust-like particles, require absolute air filtering. Hard | | | | compared to this height. Thus if any contaminant |
| disk air filter also ensures proper atmospheric pressure | | | | enters in hard disk enclosure, it could lead to head |
| and amount of moisture in its enclosure. But if it fails, it | | | | crash. In addition, affected platters’ surfaces suffer |
| can create serious issues to hard disk integrity. Hard | | | | permanent loss of magnetic data. |
| disk may suffer read/write crash. More severely, if | | | | Hard Disk Recovery engineers take it as the possible |
| you don’t have full data backup in such cases, data | | | | of recovering data. If platters surfaces have not |
| loss will occur. To recover data, however, you can | | | | undergone any physical damages, recovery is feasible |
| send such failed hard drives to Hard Drive Recovery | | | | by replacing or repairing crashed heads. These |
| center. | | | | processes should be safe, though advanced, to |
| General hard drives are not totally sealed, but are | | | | prevent further data damage. |
| certainly isolated from external contaminated | | | | Head crash is the most general failure case that hard |
| surroundings through air filter. If this air filter fails, dust | | | | drive recovery experts encounter while recovery. |
| particles could settle down on device surface. Head | | | | There are several modern technies available, entailed |
| crash may result if heads happen to sweep over | | | | to get successful data recovery. To open such failed |
| these settled down dust particles. | | | | hard drive, it requires proper filtered surroundings so |
| The reason why hard disk fails because of foreign | | | | that no more foreign particulates may penetrate in |
| particles entrance is the negligible distanc (called as | | | | hard disk to cause damages. A data recovery |
| floating height or flying height) between heads and | | | | company fulfills this requirement through Clean Rooms |
| hard disk platters’ surfaces. New hard drives have | | | | facility. |
| floating height of about .5 micro inches. Heads don’t | | | | |