Network-Attached Storage (NAS) for, CIFS, NFS, AFS, FTP, SFTP.
Network-attached storage (NAS) is dedicated file storage that enables multiple users and heterogeneous client devices to retrieve data from centralized disk capacity. Users on a local area network (LAN) access the shared storage via a standard Ethernet connection. NAS devices typically do not have a keyboard or display and are configured and managed with a browser-based utility. Each NAS resides on the LAN as an independent network node, defined by its own unique Internet Protocol (IP) address.
What most characterizes NAS is ease of access, high capacity and fairly low cost. NAS devices provide infrastructure to consolidate storage in one place and to support tasks, such as archiving and backup, and a cloud tier. NAS and storage area networks (SANs) are the two main types of networked storage. NAS handles unstructured data, such as audio, video, websites, text files and Microsoft Office documents. SANs are designed primarily for block storage inside databases, also known as structured data. What network-attached storage is used for NAS enables users to collaborate and share data more effectively, particularly work teams that are remotely located or in different time zones. A NAS connects to a wireless router, making it easy for distributed work environments to access files and folders from any device connected to the network. Organizations commonly deploy a NAS environment as the foundation for a personal or private cloud. NASThere are NAS products designed for use in large enterprises, as well as those for home offices or small businesses. Devices usually contain at least two drive bays, although single-bay systems are available for noncritical data. Enterprise NAS gear is designed with more high-end data features to aid storage management and usually comes with at least four drive bays.NAS Use Cases:
NAS Product Categories:
- The type of HDD selected for a NAS is dictated by the applications to be handled. Sharing Microsoft Excel spreadsheets or Word documents with co-workers is a routine task, as is performing periodic data backup.
- Conversely, using a NAS to handle large volumes of streaming media files requires larger capacity disks, more memory and more powerful network processing.
- In the home, people often use a NAS system to store and serve multimedia files or to automate backups. Homeowners may rely on NAS to manage storage for smart TVs, security systems and other consumer-based internet of things (IoT) components.
- In the enterprise, a NAS array can be a backup target for archiving and disaster recovery (DR). If a NAS device has a server mode, it can also serve email, multimedia files, databases or printing jobs.
- Some higher-end NAS products accommodate enough disks to support RAID (redundant array of independent disks), a storage configuration that turns multiple hard disks into one logical unit to boost performance, high availability (HA) and redundancy.
- NAS devices are grouped in three broad categories based on the number of drives, drive support, drive capacity and scalability.
- High-end or enterprise NAS: The high end of the market is driven by enterprises that need to store vast quantities of file data, including virtual machine (VM) images. Enterprise NAS provides rapid access and NAS clustering capabilities. The clustering concept arose as a way to address drawbacks associated with traditional NAS.
If a particular NAS device is allocated to an organization's primary storage, it creates the potential for a single point of failure. Ways of dealing with this include spreading mission-critical applications and file data across multiple boxes and strictly adhering to scheduled machine backups.