A hard disk drive is a computer device that allows data to be stored permanently. A hard drive (HDD), stores data even when it is powered down making it non-volatile, an example of volatile memory would be RAM which does lose data when it is powered down.
Data is written to a hard disk in the form if a magnetic signal in the surface of the platters, platters are broken down to specific areas.
Hard drives connect to a computer using a bus through an interface most often IDE or SATA although there are other interfaces such as SCSI and Fibre Channel.
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R3 Data Recovery is an excellent emergency data recovery service that I would have no hesitation in recommending to anyone.
From the initial telephone conversation I had with them I was extremely impressed by their implicit understanding and sensitive handling of my stress and panic, believing I had possibly lost 10 year’s worth of invaluable documentation, imagery and archiving from my highly respected research held on a USB stick.
They worked efficiently and conscientiously to retrieve data urgently for me and made provision for me to receive it and all in time for an important PP presentation, the success of which was crucial to my career.
They were mindful in keeping me informed of their progress with the recovery process, hence putting my mind at rest, and they accomplished this all within a working day/evening. They worked hard and consistently until the job was completed successfully and made themselves available for me to talk to during out-of-work hours. They transferred all the remaining data that was not urgent onto a USB stick and returned it in the post to me, thus very satisfactorily completing an exemplary and outstanding service.
Adrian Howells (Performance Artist and Honorary Research Fellow ) - University of Glasgow
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