The most basic thing about network storage - NAS

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   A system NAS Synology drive high five

   
   
   
   As the most basic needs of computer like web browsing, listening to music or watching movies has been satisfied, people want to use the feature more useful, more advanced, such as listening to music wirelessly from away or sitting in the living room to watch movie with computer source is in the bedroom ... That is the reason that the NAS network storage systems increasingly popular. Of course it is also home NAS NAS Enterprise is "good hurt" many times, hopefully this article will help you with the most basic knowledge of NAS as well as other criteria for buying NAS failure or not being purchased to meet demand.
   
   What is NAS?
   NAS is an acronym for Network Attached Storage, Vietnamese translation is temporary storage device attached to the network. Translation and heard a very narrow definition of it but do a lot of the NAS and the main task is to centralize all data users for easy management. We need to distinguish NAS and DAS (direct attached storage) lighter, NAS is not attached directly to the DAS computer as it connects to the network. NAS is often used to store, share files and especially streaming multimedia data in recent times. With the NAS system, you leave the house, the office is accessible in the data easily. modern NAS systems can also be envisioned as a miniature server CPU because it also , also RAM and running the embedded version of the operating system collapse (usually Linux) as well as network connectivity via Ethernet or even wireless connections like Wi-Fi. To store frequently used data in the built-in NAS but some devices also support connection with external devices or even USB memory. NAS market is currently quite crowded and you can choose anything you like, the NAS only supports external storage via USB usually smaller and much cheaper than the use NAS drive embedded. Some NAS supports advanced features such as setting up a web server, remote administration or the hard drive setup RAID mode. NAS market is now usually divided into three main categories. The first is the NAS for individual customers usually only support the USB port and mount the hard drive died. Next is the slightly more advanced NAS, such as support for iSCSI communications for small offices and advanced users. Finally, we have the most genuine NAS supports RAID protocols, Active Directory, Web Server, Firewall, ... Here, let's look at the criteria when buying NAS: NAS Storage: Storage that a NAS drive support is often very much affected its price. The in NAS for individual customers are less likely to support SATA drives that use external hard drive via USB port. Some of these NAS up to 4 USB ports hard drive to support both the TB capacity. What is lacking in the drive usually does not support the data protection methods such as RAID 1 or RAID 0 speed. Also, while the NAS system supports hard drives in many different modes of management and not nearly as limited storage capacity of a hard drive (up to 3TB / 1 drive current), many External USB NAS is limited few hundred GB or less on a port. So you must find out the manufacturer before buying. Usually the NAS drive comes with a hard drive inside would be cheaper than buying separately. However, there are cases when you back and not buy a drive (disk less) and mounting the drive on the left. The installations are very simple but please be advised that the NAS drives support lightly. Hard drive not always used with NAS support where, hard drive compatibility list is usually placed on the manufacturer's website. With the enterprise hard drive is not necessary to mention our ability to expand. For example, QNAP TS-212 drive only 1 USB port for expansion but to support iSCSI virtual disks to improve capacity. NAS wireless or wired? Most of the new NAS market support Gigibit 100Mbps Ethernet network rather slow before. Some even NAS supports up to two Ethernet ports for Port Trunking, this feature will reserve a broken gate and immediately replaced with another port in order to ensure connectivity, in addition it also combines two Ethernet NAS is the speed of data transfer. You can connect the NAS to the router or switch to connect it to the network is using. Many NAS is available DHCP and will automatically receive an IP address from the network. If you want remote management, you should assign it a static IP address. The NAS supports wireless devices available is rarer than many kinds of wired and we also met a number of issues such as latency are often larger than other types of cord. Even so, more and more NAS comes with built-in WiFi N standard or the option to allow attached USB WiFi. The disadvantage of the use of WiFi is its slow speed, as fast as 450Mbps WiFi n also last less than a half-Gigabit Ethernet. Unless you want to stream video over WiFi or download / upload should not continually put money into these options, use them to upgrade a hard drive or router. Processing Power: Just like computers, devices NAS also RAM and its own processor. And of course, the faster processor, more RAM, the NAS that have higher performance. Do not be mistaken for the NAS processor requires a computer as mild, but most current high-end NAS using the notes as D510 ATOM 2 people only. If the higher your needs, do the work operations I / O should continually invest in the Atom NAS, the NAS is often cheaper than using Marvell chip. Some NAS allow us to upgrade the RAM but most die mounted on the mainboard. OS: If you use Windows do not have to worry much about this, most NAS systems fully support Windows. Mac users do not have to worry too much, some NAS systems support periodic backups of Mac OSX Time Machine. The use Linux then you should use the popular Linux distribution, however, shall not have any NAS also supports Linux. system backup and restore of NAS: NAS is only valid as long as it captures data of you. The high-end NAS often have the option of setting the system RAID or hard drive failure warnings and serious problem. The data recovery in case of failure is also an important issue should be mind. The regular business NAS supports hot swap drives (hot-swap), allows you to change drives without shutting off power or affecting the performance of the drive. Some NAS also supports data backup hard drive to a server cloud, an extremely secure solution when your data is stored in two completely separate areas. Manufacturers often use the term hybrid for this solution and it is applied to the data is extremely important. If not using the manufacturer's server, the NAS for individual customers can also support backup service cloud. not only data but also the configuration of the NAS needs to be saved, you may not want to set themselves to re-establish each individual NAS in its system where right? Some NAS also allows users to plug the drive into the USB port and then back out there. Noise: There are many NAS systems very noisy, very noisy when the four hard drive recording at the same time, cooling fans also run vu service. Therefore, you should test before buying NAS to be able to be annoyed with it here. Noise is not a major problem in the enterprise sector to private servers, but would be offensive to individual customers. Power Consumption: NAS is created to save energy compared with other systems network server. However, you should also note that the solution that manufacturers do not provide full, with NAS allows fan management, power consumption or just run the fan when the temperature reaches the threshold. The NAS business even more control over the flow of CPU power ... Remote Control: More and more NAS supports remote management, such as cloud-based services or manage through the web interface. Integration with cloud services platform is a very important feature if you want easy data sharing easier with friends and relatives. NAS software and services: Although the NAS software comes mainly focused on multimedia streaming and file system backup but there are a number of manufacturers rather quickly when the server supports FTP, BitTorrent downloads, iTunes server or even Telnet. Some even have more advanced MySQL, Web IP camera management. for NAS Security: Privacy is an issue to consider, whether you use a NAS at home or company. You should choose a NAS that supports file encryption or even protected by a firewall. The NAS also supports small multi business protection methods such as physical or K-Kensingto keyhole slots.