Computers use a variety of data storage devices that are classified in two ways: one is whether they retain the data if there is no electricity and the other is how close they are to the processor CPU.
Both types of storage are needed in all computers. In a personal computer, memory does not retain data when the electricity is off, but while it is on, it enables quick access to open files. A storage drive, however, allows you to permanently store data, so it's available each time you turn on the computer. The first classification of computer data storage is between volatile and non-volatile storage. An example of volatile storage is memory RAM that stores data only until there is no electricity powering the device.
RAM allows your computer to have multiple files open and access any of them instantly. Some other examples of volatile storage devices are calculators. Non-volatile storage is storage that maintains the data even when there is no electricity powering the device. There is other non-volatile storage, such as DVDs or flash drives. For more information about the difference between memory and storage, read here.
Computer data storage devices are also classified by their distance from the processor, or CPU. The closest storage is memory, or RAM. This is the only kind of data storage that directly accesses the CPU. Memory includes processor registers and the processor cache, but these are included on the memory module. Memory is volatile storage, so any information that goes into memory needs to be written to the main storage device to be retained permanently.
Because data flows from memory to a storage device, it's considered secondary storage. For most personal computers, secondary storage is the main data storage device. For example, letters become numbers; the Complete Works of Shakespeare is around pages in print, contains 40 million bits, with one byte per letter, totalling five megabytes 5MB.
Photographs are converted to a set of numbers that indicate the location, colour and brightness of each pixel. Whereas convention numbers use ten digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 , binary numbers use two digits to represent all possible values.
The conventions numbers translate into binary numbers as: 0, 1, 10, 11, , , , and With binary numbers, any value can be stored as a series of items which are either true 1 or false 0. Binary data is primarily stored on the hard disk drive HDD. The device is made up of a spinning disk or disks with magnetic coatings and heads that can both read and write information in the form of magnetic patterns. In addition to hard disk drives, floppy disks and tapes also store data magnetically.
Newer laptops, as well as mobile phones, tablets, USB flash drives and SD cards, use solid state or flash storage. With this storage medium, the binary numbers are instead stored as a series of electrical charges within the NAND flash chips.
Because all data is made up of a string of binary numbers, just one number out of place can cause a file to become corrupt. Simply phone or email us for a job number and send your data recovery to us. Your hard drive or media will be photographed, catalogued and bar-coded and the data recovery evaluation will start within an hour of receipt. We aim to complete this process within 24 hours depending on the complexity of work involved.
The engineers will provide a no obligation recovery prognosis, with a guaranteed list of recoverable files and an estimated timescale. You can then decide whether to proceed with the recovery. Should you choose not to proceed, we will return your media by secure data courier.
We will then copy out the data to your preferred choice of output media - either 64Gb memory stick or HDD for purchase or loan. Your data will be dispatched on our secure, next day courier service. Once you have received your data any copies of your data will be permanently and securely erased from our servers after 7 days.
With extensive data recovery research and development capabilities, our success rates are second to none - without compromising on our prices! This is why over 36, companies and individuals come to us every year. Great care is taken when recovering and handling your data to ensure that its integrity is maintained and that there is a clear audit trail through the entire data recovery process. Class clean rooms, specialised platter removal jigs and software applications allow us to provide the most comprehensive service in the industry.
They are great at communicating findings and keeping you up to date with recovering any lost data. We had a corrupt video file recovered using the express service and the work was completed very quickly.
They were very clear from the outset about what may and may not be possible and what the cost would be. From my device being collected by a courier, to a new device being sent back to me only a matter of days later, they were in touch every step of the step way to let me know what was happening. The recovery of my data was carried out extremely efficiently. The issue for me was the recovery of my photographs, some of which were really irreplaceable.
Everything I needed was carried out and the data was returned to me on the new hdd in a manner that followed my own distribution.
The technical service and customer service was always top class, everything was delivered in the timescales promised. It was expensive but it recovered the irreplaceable and that, in its way, is priceless. I found Data Recovery Specialists through an online search and they responded to my initial query very quickly. I sent my hard drive to them and they were able to recover all my data very quickly, keeping me informed of what was going on the whole time.
Great service and I would definitely recommend them. Would recommend to anyone needing help salvaging their hard drives. Data Recovery Specialist help me retrieve the data quick.
It's not a cheap service but it works and the data recovered was far more valuable than the repair cost. I contacted several companies and opted for DRS. Collection of my device was simple, the turn around time was quicker than I expected and they kept me informed right through the process.
Really pleasant and professional company. My interaction with Daniel Rees was very good, he was honest with what he could do to recover my very important Data.
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