Over the years USB thumb drives and memory cards get larger and cheaper, it’s getting easier to trust much more of your data to them. It’s also much easier to mistakenly erase data or have them hiccup on you. And if you’re in the habit of holding on to that data for too long — for example, not transferring photos from your camera’s memory card — disaster is almost guaranteed to strike at some point. What happens then?
If logical based recovery attempts being excluded in most of the cases the problem is related to controller responsible for writ
ing the data to memory as well for reading rather than memory chip itself. In that case there is almost 100% chances for successful data recovery.
Approach used for reading or writing of data differ from one manufacturer to another and this where the job gets tricky. Long story short controller is based on pre-defined algorithm for writing and reading of data. In order to complete data recovery with success we need to brake this algorithm. Implemented algorithm is based on protected logic, in other words it has been patented by manufacturer and it is not available to public.
Memory has been divided to pages, size or logic for the particular page depends on type of the implemented algorithm. In addition the page layout in the memory itself is not based on linear logic so it can be several different variety or mix according to implemented algorithm. For the success of data recovery it is necessary to unsolder memory chip from damaged printed circuit board and read all sectors of memory chip to create image. After image has successfully created we can determine implemented algorithm, clear away used mix and compile all pages to one using proper algorithm.
After suggested steps had been made the data can be accessed in logical form according to file system. In almost all cases the FAT 12 file system has been used and we have to recreate tree of data stored. After logical structure has been successfully recreated the data can be copied.
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NAS (network attached storage) devices certainly aren’t the most glamorous gadgets you can have in your home. A network-connected hard drive might seem like a remnant from a home office – a backup necessity for over-paranoid users and not much more.
Early NAS devices – and even some new no-frills budget ones – do little more than allow any computer that’s connected to a network to access an external hard drive as if it was physically installed in the computer. However, a lot of new NAS devices have some great features built in, which can completely transform what your home network is capable of.
Not only can they act as media servers throughout your house – letting your devices access and stream music and videos to any device on the network – they can also be used be used to stream your media across the internet, letting you access the files from anywhere in the world, and effectively allowing you to create your own version of Spotify or Netflix.
As for cloud backup and synchronisation services, while you could pay Dropbox the equivalent of $9.99 a month for 50GB of space, with a NAS device you could have your own service with huge amounts of storage (some NAS devices accept hard drives of up to 3TB) without monthly fees or the need to trust your private data to a third party. We’ve gathered the best NAS devices on the market to find out just what they are capable of.
Buffalo Cloudstation Duo – £240
Western Digital My Book Live – £147
Netgear ReadyNAS Ultra 4 – £423
Buffalo Linkstation Pro LS-VL – £129
D-Link ShareCenter – £60
Iomega StorCenter ix2-200 – £274
Netgear Stora MS2110 – £130
Synology DS411 – £485
This article was taken from the following page: http://www.techradar.com/news/networking/routers-storage/best-nas-drive-8-on-test-1057020