Netgear Analysis NAS Network attached storage technology

The Chinese name of the NAS is Network attached storage and is a professional storage technology based on hard disk. It can directly access computer network and provide centralized data access service for clients of various operating systems.

The advantages of NAS

Nas's professional Storage design and features for a wide range of client services to make data more secure and accessible. Unlike general storage devices such as U disk, 1394-port storage, or Cd/dvd,nas, you have embedded operating systems. The operating system gives NAS the built-in intelligence to support its independent servicing of various clients on the network. NAS does not need to rely on any other host device and does not appear to be a problem that NAS cannot access when other devices are down. In addition, NAS includes RAID technology, where data is backed up redundantly on multiple hard disks, and easy data recovery can be provided once a hard disk encounters a hardware failure.

Why NAS can be a substitute for servers

As a professional storage and file server, NAS is much cheaper and more convenient than traditional servers. Traditional servers can be your choice if you need complete service capabilities-applications, services or monitoring, and hardware peripherals-additional storage and file services. But NAS is more focused on its most important storage work. Stripped of other features. A NAS device becomes less system-conflict and security-attack issues, providing higher read and write performance and system stability. Also, when a problem arises, NAS systems can handle failures more quickly due to lower system complexity.

NAS supports different operating system platforms

Because of the redundancy of its operating system, NAS devices can connect more kinds of operating systems than normal servers. NAS runs its own operating system, which does not require specific client support for access by operating systems such as Windows, UNIX, Linux, and Mac.

Definition of RAID

RAID is the abbreviation for Redundant array of independent disks, meaning redundant arrays of independent disks. RAID allows multiple independent hard drives to form a large logical hard drive, using a professional algorithm that distributes data across hard disks and makes redundancy. This reduces the risk of losing all data due to a hard drive corruption.

The importance of RAID

The importance of data backup is well known, but the reality is that we don't usually do exactly what we want. RAID protects your data and provides protection when you encounter a hard drive failure. Based on the level of RAID you are using (at least RAID 1), your data can be recovered even if a hard drive fails. If you are using a standalone hard drive with no raid, your data will not be recovered once the failure occurs.

Why NAS instead of Das

The direct attached Storage (DAS) means direct-attached storage, such as U disk and FireWire interface disks (1394 interfaces). Das still has a market space, but it is not as versatile as NAS. Das is connected directly to the computer, but it is not accessible to other clients at the same time as the direct connection. A DAS device relies entirely on the host (computer), so Das can be an effective choice for individual users, but it is difficult to serve multiple users. In addition, most Das products do not include RAID technology for data protection. For multiple clients or network applications, NAS has a higher efficiency, security, ease of use, and manageability characteristics.

Nas vs SAN

Nas and SAN are two major storage technologies, and discussions about their similarities and differences continue. The concise answer is that NAS is derived from the concept of a file server, serving multiple clients on the network. Nas as a file server in the foreground, a large amount of physical storage can be mounted on NAS as the physical capacity of the NAS. NAS provides file-based services to clients. Management and backup of each client's data can be separated from the client host and concentrated in the NAS.

The Storage area Networks (SAN) storage network is derived from the concept of network organization storage and storage networks providing high load flow. Storage is contained in a dedicated network, with no other business impact from the public network, and is ideal for large traffic data transfer. Instead, Nas is directly connected to an existing public LAN, which can withstand poor network throughput.

The differences in rationale and architecture lead to differences in complexity, usability, and performance. Sans can provide high performance and a lot more configuration options. In most cases, however, NAS is cheaper and more convenient to use than Sans.