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A network storage device is a storage system connected to a computer network so multiple authorized users and devices can store and retrieve shared files from one central location. A network-attached storage (NAS) appliance is the most common dedicated form: it provides file access over the network rather than connecting to just one computer.
How a network storage device works
Instead of plugging a drive directly into one computer, a network storage device joins a local network. Authorized computers and other devices then reach its shared folders over that network. The storage is centralized, while access can come from more than one client.
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A NAS provides file-level access: clients request and work with files and folders. It commonly uses network file protocols such as SMB or NFS; SNIA also identifies CIFS, an earlier name associated with the SMB family. The exact protocols available depend on the device and its configuration. SNIA’s NAS overview and HPE’s NAS explanation describe these file-access services.
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What people use one for
- Shared household or team files: Keep documents in a common location that authorized users can reach from their devices.
- Backups and recovery: Store copies of computer files centrally to help restore them after loss or device failure.
- Photos, video, and archives: Keep large or infrequently accessed collections on shared storage.
- Media streaming: Make stored media available to compatible devices on the network.
- Organizational workloads: NAS can also support uses such as virtual desktop infrastructure and application development. AWS’s NAS overview outlines these examples.
How NAS differs from other storage
| Type | Connection and access | Typical distinction |
|---|---|---|
| NAS | Connected to a computer network; provides file-level access to multiple authorized clients. | Shared files are served from a central storage system. |
| Direct-attached storage (DAS) | Connected directly to a computer. | Access is centered on the connected computer, rather than provided as a network file service. |
| Storage area network (SAN) | Uses a storage network to provide block-level storage. | Often used in more specialized environments; setup and management can be more complex and costly than NAS, according to NetApp’s NAS and SAN comparison. |
| Public cloud storage | Hosted by a provider and accessed over the internet. | The provider manages the storage service; a NAS is generally managed by its owner or internal IT team. IBM’s NAS overview explains this distinction. |
Local access, remote access, and management
NAS files are ordinarily available to authorized devices on the local network. Access from outside that network is possible when remote access is configured, but it is not automatic simply because a device is a NAS. How remote access is provided depends on the particular system and its setup.
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UGREEN NAS DH2300 2-Bay for Beginners & Personal Users, Phone Backup
- Entry-level NAS Personal Storage：UGREEN NAS DH2300 is your first and best NAS made easy. It is designed for beginners who want a simple, private way to store videos, photos and personal files, which is intuitive for users moving from cloud storage or external drives and move away from scattered date across devices. This entry-level NAS 2-bay perfect for personal entertainment, photo storage, and easy data backup (doesn't support Docker or virtual machines).
- Set Your Devices Free, Expand Your Digital World: This unified storage hub supports massive capacity up to 64TB.*Storage drives not included. Stop Deleting, Start Storing. You can store 22 million 3MB images, or 2 million 30MB songs, or 43K 1.5GB movies or 67 million 1MB documents! UGREEN NAS is a better way to free up storage across all your devices such as phones, computers, tablets and also does automatic backups across devices regardless of the operating system—Window, iOS, Android or macOS.
- The Smarter Long-term Way to Store: Unlike cloud storage with recurring monthly fees, a UGREEN NAS enclosure requires only a one-time purchase for long-term use. For example, you only need to pay $459.98 for a NAS, while for cloud storage, you need to pay $719.88 per year, $2,159.64 for 3 years, $3,599.40 for 5 years. You will save $6,738.82 over 10 years with UGREEN NAS! *NAS cost based on DH2300 + 12TB HDD; cloud cost based on 12TB plan (e.g. $59.99/month).
- Blazing Speed, Minimal Power: Equipped with a high-performance processor, 1GbE port, and 4GB RAM on Board, this NAS handles multiple tasks with ease. File transfers reach up to 125MB/s—a 1GB file takes only 8 seconds. Don't let slow clouds hold you back; they often need over 100 seconds for the same task. The difference is clear.
- Let AI Better Organize Your Memories: UGREEN NAS uses AI to tag faces, locations, texts, and objects—so you can effortlessly find any photo by searching for who or what's in it in seconds. It also automatically finds and deletes similar or duplicate photo, backs up live photos and allows you to share them with your friends or family with just one tap. Everything stays effortlessly organized, powered by intelligent tagging and recognition.
With a NAS, the owner or an organization’s IT team is typically responsible for managing the device. Public cloud storage, by contrast, is hosted and managed by a third-party provider. The distinction is about who operates the storage; it does not mean a NAS can never be reached remotely.
Drives, RAID, and backup
NAS appliances do not all arrive in the same condition. Some are diskless and require separately selected drives; others come with drives installed. Check the device’s compatibility information before buying drives, since there is no single drive model that fits every NAS.
Rank #2
BUFFALO LinkStation 210 2TB 1-Bay NAS Network Attached Storage with HDD Hard Drives Included NAS Storage that Works as Home Cloud or Network Storage Device for Home
- Value NAS with RAID for centralized storage and backup for all your devices. Check out the LS 700 for enhanced features, cloud capabilities, macOS 26, and up to 7x faster performance than the LS 200.
- Connect the LinkStation to your router and enjoy shared network storage for your devices. The NAS is compatible with Windows and macOS*, and Buffalo's US-based support is on-hand 24/7 for installation walkthroughs. *Only for macOS 15 (Sequoia) and earlier. For macOS 26, check out our LS 700 series.
- Subscription-Free Personal Cloud – Store, back up, and manage all your videos, music, and photos and access them anytime without paying any monthly fees.
- Storage Purpose-Built for Data Security – A NAS designed to keep your data safe, the LS200 features a closed system to reduce vulnerabilities from 3rd party apps and SSL encryption for secure file transfers.
- Back Up Multiple Computers & Devices – NAS Navigator management utility and PC backup software included. NAS Navigator 2 for macOS 15 and earlier. You can set up automated backups of data on your computers.
Some systems use RAID configurations to maintain access to data after a drive failure, depending on the RAID level and setup. RAID is not a complete independent backup: it does not by itself protect against every cause of data loss, such as accidental deletion or damage affecting the whole device. Keep a separate backup of important files. HPE and AWS describe NAS configurations and uses in their respective NAS and NAS explainers.
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Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.In plain terms
A network storage device is shared storage that other authorized devices reach through a network. NAS is the familiar appliance version, suited to centralized file access; DAS connects directly to a computer, SAN typically delivers block storage, and public cloud storage is run by a provider.
Quick Recap
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UGREEN NAS DH4300 Plus 4-Bay for Beginners, Home Users & Remote Workers
- Entry-level NAS Home Storage: The UGREEN NAS DH4300 Plus is an entry-level 4-bay NAS that's ideal for home media and vast private storage you can access from anywhere and also supports Docker but not virtual machines. You can record, store, share happy moment with your families and friends, which is intuitive for users moving from cloud storage, or external drives to create your own private cloud, access files from any device.
- Smart Photo Backup & AI Album: Automatically back up photos and videos from your phone in real time and keep growing family memories organized with AI-powered photo albums. Semantic search, custom learning, and recognition of people, objects, pets, and similar photos help you quickly find the moments you want. Duplicate photo removal also helps keep your library organized—ideal for families and users with large photo collections.
- User-Friendly App & Easy Setup: Connect quickly via NFC, set up simply and share files fast on Windows, macOS, Android, iOS, web browsers, and smart TVs. You can access data remotely from any of your mixed devices. What's more, UGREEN NAS enclosure comes with beginner-friendly user manual and video instructions to ensure you can easily take full advantage of its features.
- More Cost-effective Storage Solution: Unlike cloud storage with recurring monthly fees, A UGREEN NAS enclosure requires only a one-time purchase for long-term use. For example, you only need to pay $629.99 for a NAS, while for cloud storage, you need to pay $719.88 per year, $1,439.76 for 2 years, $2,159.64 for 3 years, $7,198.80 for 10 years. You will save $6,568.81 over 10 years with UGREEN NAS! *NAS cost based on DH4300 Plus + 12TB HDD; cloud cost based on 12TB plan (e.g. $59.99/month).
- Your Data, You Control：No third-party clouds, no hidden access, UGREEN NAS provides a more secure and private data storage solution. It stores data locally on your private hard drives and does automatic backups. Thus, you can keep full control over it. The advanced encryption is TRUSTe certified in the United States and is awarded the first (and only) ETSI EN 303 645 certification mark for NAS products by TÜV SÜD Group.
Rank #4
BUFFALO LinkStation 210 4TB 1-Bay NAS Network Attached Storage with HDD Hard Drives Included NAS Storage that Works as Home Cloud or Network Storage Device for Home
- Value NAS with RAID for centralized storage and backup for all your devices. Check out the LS 700 for enhanced features, cloud capabilities, macOS 26, and up to 7x faster performance than the LS 200.
- Connect the LinkStation to your router and enjoy shared network storage for your devices. The NAS is compatible with Windows and macOS*, and Buffalo's US-based support is on-hand 24/7 for installation walkthroughs. *Only for macOS 15 (Sequoia) and earlier. For macOS 26, check out our LS 700 series.
- Subscription-Free Personal Cloud – Store, back up, and manage all your videos, music, and photos and access them anytime without paying any monthly fees.
- Storage Purpose-Built for Data Security – A NAS designed to keep your data safe, the LS200 features a closed system to reduce vulnerabilities from 3rd party apps and SSL encryption for secure file transfers.
- Back Up Multiple Computers & Devices – NAS Navigator management utility and PC backup software included. NAS Navigator 2 for macOS 15 and earlier. You can set up automated backups of data on your computers.
Rank #3
Sale
UGREEN NAS DXP2800 2-Bay for Advanced Home Users, Remote Workers & Creators
- 【Advanced Home Data & Media Hub】For advanced home users who need phone backup, file storage, and centralized data management. Centralize family photos, 4K videos, movies, computer backups, and personal files in one place while running multiple apps for home entertainment and everyday data management. Suitable for households with growing digital libraries and multiple NAS use cases.
- 【Built for Creators, Media Servers & Advanced Apps】Powered by the Intel N100 Quad-Core CPU, 8GB DDR5 RAM, 2.5GbE networking, and dual M.2 NVMe slots, DXP2800 handles large files and heavier workloads with ease. Run Docker, virtual machines, and media server applications compatible with Plex—ideal for content creators, tech enthusiasts, and advanced home users managing 4K videos, RAW photos, personal media libraries, and multiple NAS apps.
- 【Up to 80TB for Growing Digital Libraries】 Supports up to 80TB of storage using two HDD bays and two M.2 NVMe SSD slots for family photos, movies, RAW photos, 4K videos, work files, and device backups. AI photo management supports recognition of people, objects, scenes, and locations, album organization, and duplicate photo detection. HDDs and SSDs are not included.
- 【AI-powered Home Surveillance】Turn DXP2800 into a centralized home surveillance hub by connecting compatible network cameras and storing recordings locally on your NAS. AI-powered features include Face Recognition, People Detection, and Pet Detection, helping advanced home users review important events more efficiently while managing home surveillance and personal data in one place.
- 【One data Center Across Your Devices】Keep files from desktops, laptops, phones, tablets, and other devices together instead of scattered across cloud accounts and external drives. Access, back up, organize, and share data across Windows, macOS, Android, iOS, web browsers, and compatible smart TVs—ideal for creators and advanced home users working across multiple devices.
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