Sort NAS Hard Drives with Physical Properties

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Sort NAS Hard Drives with Physical Properties

NAS physical classification: 4 bay NAS storage, 2 bay NAS, 8 bay NAS and single drive NAS; 4TB NAS, NAS 2TB, NAS 1TB and NAS storage 8tb; NAS HDD, NAS


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  • Category - Computer Basics/Computer Basics

  • Submitted By - Helen Green

  • Submitted on - 2018-02-06 11:52:46


General Introduction to NAS
Network Attached Storage – NAS hard drive is a kind of data storage device attached to network within LAN (Local Area Network). It is used for storing large amount of data including videos, movies, pictures, photos, documents, files and folders, etc. And, data stored on NAS can be shared to all computers within the same LAN; this is called file sharing. Yes, NAS seems like a cloud drive as for its functions. Actually, nowadays, NAS, especially NAS for business usage, is developing towards cloud technologies.

Traditional NAS is various and it can be sorted into different groups according unlike standards, such as disk bay, storage capacity and hard disk type.

Classify NAS with the Number of Disk Bay
Disk bay is a physical port in NAS hard drive device in which hard disks for storage are inserted and connected to the whole NAS device so that connected to electricity and network. Thus, these hard drives can be detected by computers within LAN. Without disk bay, hard disks cannot be connected to the NAS device, therefore, the NAS has no storage space for file saving.

Usually, the most common NAS types are 4 bay NAS storage, 2 bay NAS, 8 bay NAS and single drive NAS. Also, there are NAS with other number of bay, like the 5-bay Synology DiskStation DS1515+.

Assort NAS with Capacity of Storage
As a storage device, one of the most important property of a NAS hard drive is its capacity. In general, the larger the capacity is, the better. However, in daily life, we should choose a proper capacity which suits us or suits the condition most. That is to say, in some cases, it is not that “the larger the capacity is, the better.”

For instance, if you are a home user only want to get a NAS to store some family data like party videos, family photos, beloved music, etc. and make them accessible to all family members; or, for backing up a couple of PCs or family phones, you only need a small NAS whose storage capacity does not need to be very large. 1TB to 2TB should be sufficient. Since 1tb is, general speaking, unreachable for computer local storage, you do need NAS hard drive. Thus, here, NAS 1tb or NAS 2tb is your choice, like Buffalo TeraStation 5200DN (2TB).

Yet, for other usage instead of home/personal use, such as for business use, for enterprise usage or for office use, you should have a large NAS hard drive. As for how large it is, it depends on how large your company is and how many data you need to save to the NAS. No matter how large the data are, there are NAS of all levels, various from 1tb to hundreds of terabytes, such as 4TB NAS, NAS 2TB, NAS 1TB and NAS storage 8tb, etc.

NAS with Different Types of Disk
Furthermore, NAS hard drive can be classified by the type of its storage disks. Usually, there are NAS HDD, NAS SSD, NAS raid and USB NAS storage. Moreover, NAS raid can be divided into raid 5 NAS, raid 1 NAS, etc.

Compared with traditional NAS HDD, NAS SSD has several advantages:

Higher read and write speed
No noise
Workable in larger range of temperature
Safer for data storage
Compared with traditional NAS HDD, NAS SSD has several advantages:

High read and write speed: thorough operating on several hard drives simultaneously, its speed is hundreds of times of single hard disk, maybe even higher than SSD.
Safer for data saving: occupying several disks, besides improving speed, it also improve the security of data by mirroring saved data to an image file stored on another disk with the disk arrays. Thus, when original data crashed, you can restored them back from image ones.
Therefore, most NAS take raid disk technology into their products, such as Western Digital My Cloud Mirror Gen 2 (4TB).


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