Is it possible for a data recovery software to get a correct file and folder structure but bad file content or vice versa? Why does it happen?
The answer depends on the filesystem type being recovered.
On FAT, the location of the parent folder is determined depending on the same formulae which are used for finding data. If the parameters in these formulae are invalid, neither data nor a folder structure can be restored. Hence, typically if you have a folder tree recovered properly or close to that, the files should be good as well.
On NTFS, there are two independent sets of parameters, one set controlling the data location and the other set covering the parent-child relationships in a folder tree. So on NTFS, it is theoretically possible (and sometimes happens) to have one good set of the parameters but the other one wrong. So, if you unformat an NTFS drive, a good folder tree full of damaged files is perfectly possible.
On HFS and HFS+, the parent-child relationship is described by desig…
In PCPro magazine,
January 2013, in the article "Getting it taped", they describe the current
state of tape drives and the data storage devices using them. All would be well
but the article illustration that is quite weird - it would be logical to see
these tape drives, however, instead of this the readers are offered a typical
that, while inspecting in detail this NAS that claims to be
Tandberg DPS 2000, I found out that it is like two peas similar to a four bay
QNAP device. So, go for the original - buy QNAP.