NAS Recovery

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What is NAS?

NAS (Network Attached Storage) is a standalone storage device containing one or several disks and providing access to the stored data via the network. The main NAS characteristics:

  • The way of connection. NAS is connected through the network. There are devices that are very similar to NAS except the way they are connected to the host system (such devices use USB). These devices are not true NASes but USB enclosures.
  • Components. NAS can use typical PC components such as Intel Atom CPU in QNAP (e.g. model 859) or in some Synology models. Also they can use ARM or PPC CPUs.
  • OS. Typically, Linux is used to control NAS regardless the CPU type.
  • RAID software and filesystem. Because NAS uses Linux this means it uses MD-RAID to create and manage RAIDs. As for the filesystem, it is either selected by user or set by a NAS vendor. Typically, it is one of the following: ext3, ext4 or XFS (in Iomega NASes).
  • NAS is not much different from a server or HTPC. Generally, NAS is not supplied with a keyboard, a mouse, and a monitor. On top of that, the main goal of NAS is to store data while a web server is designed to serve the website content.