Types of NAS: Personal Cloud vs. Prebuilt vs. DIY

A NAS is a storage device that connects to your network so multiple authorized devices can store, access, and share files. If you want a deeper introduction, start with What Is NAS and How Does It Work?.

There are three practical types of NAS:

1. Simplified personal-cloud NAS: Best for phone backup, family photos, file sharing, native media apps, and buyers who want minimal setup.
2. Full-featured prebuilt NAS: Best for Docker, virtual machines, media transcoding, creators, advanced home users, and small teams.
3. DIY NAS: Best for users who want to choose the hardware, operating system, and applications themselves.

1. Simplified Personal-Cloud NAS

Choose this type when your main problem is scattered personal data.

Your phone is running out of space. Family photos are spread across several devices. Important files live on USB drives that nobody remembers to back up. You want one private storage location without learning how to manage a server.

A simplified personal-cloud NAS focuses on:

• Automatic phone and computer backup
• Photo organization
• File sharing between family members
• Remote file access
• Media playback through natively supported apps
• Simple setup and administration

The UGREEN NASync DH2300 is a current example. It has two SATA drive bays, a 1GbE network port, and a listed maximum capacity of 64TB using two 32TB SATA drives. Storage drives are sold separately.

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What the DH2300 Can and Cannot Run

It can run Jellyfin. Jellyfin is available as a native application through the UGREEN App Center, so a DH2300 is a valid choice for a household that wants a personal media server without container management.

It cannot run Plex. Plex Media Server requires Docker on UGOS Pro, and the DH2300 does not support Docker or virtual machines. The same applies to Home Assistant, Nextcloud, and any other service that is only distributed as a container. Unofficial installations fall outside the supported configuration and can affect system stability.

Move up to a full-featured prebuilt NAS when you need Docker, virtual machines, expandable memory, M.2 NVMe storage, or faster networking.

2. Full-Featured Prebuilt NAS

Choose this type when the NAS needs to do more than store folders.

You may want to deploy Docker containers, host a virtual machine, transcode media for remote playback, manage a creative library, support several users, or move large files over a faster network. You still want the manufacturer to supply the enclosure, operating system, updates, and primary support path.

Current UGREEN examples include:

• NASync DXP2800 GT: A two-bay model with an AMD Ryzen Embedded R2514 processor, one 10GbE port, up to 64GB of RAM, and a listed maximum storage capacity of 80TB.
• NASync DXP4800 Plus: A four-bay model with an Intel Pentium Gold 8505 processor, 10GbE plus 2.5GbE networking, up to 64GB of RAM, and a listed maximum storage capacity of 144TB.

Bay Count Changes Your RAID Options

A two-bay DXP2800 GT gives advanced users Docker, virtual machines, 10GbE networking, and expandable memory in a compact system. Two drives limit you to simpler storage modes and cap future SATA capacity.

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Four bays on the DXP4800 Plus allow RAID 5, RAID 6, and RAID 10 in addition to simpler modes. Note that RAID 6 across only four drives yields the same usable capacity as RAID 10 with slower write performance, so RAID 5 or RAID 10 is the more common choice at this bay count.

What 10GbE Actually Delivers

A 10GbE connection has a theoretical ceiling of 1.25GB/s, compared with 125MB/s for 1GbE. Conventional hard drives will not reach that ceiling. A four-bay array of spinning disks typically sustains a few hundred MB/s on large sequential transfers, which is well short of what the port can carry.

10GbE earns its cost through SSD storage pools, NVMe caching, or several users working at the same time. It also requires a compatible switch, cabling, and client network adapter. Upgrading the NAS alone changes nothing.

The NAS hardware buying guide explains how the processor, memory, drives, and network interact.

Choose a full-featured prebuilt NAS if: you need advanced applications or faster hardware but want a supported, integrated system.

Consider DIY instead if: the manufacturer’s operating system, expansion options, or supported applications cannot meet a specific requirement.

3. DIY NAS

A DIY system lets you select the case, motherboard, processor, memory, storage controller, network interfaces, drives, and operating system. It can reuse existing hardware or be designed around a highly specific workload.

Choose DIY when at least one of these conditions applies:

• You already own suitable hardware.
• You need a specific storage operating system.
• You require more drive bays or expansion cards than available prebuilt systems provide.
• You need specialized networking.
• You want to replace or upgrade individual components over time.
• Building and maintaining the server is part of the appeal.

Do not assume DIY is automatically cheaper. A reused computer can reduce the initial cost, while a new build may require a case, motherboard, processor, memory, power supply, storage controller, network adapter, boot drive, cables, cooling, and UPS.

Support is also divided among component vendors, the operating-system project, documentation, and community forums. When something fails, you determine whether the problem comes from a drive, controller, cable, driver, operating system, application, or configuration.

Choose DIY when you need the control enough to accept that work. Choose a full-featured prebuilt NAS when your priority is running applications rather than maintaining the platform underneath them.

NAS vs. DAS vs. SAN

These are three different storage architectures, not three types of NAS.

• DAS, or direct-attached storage, connects directly to a computer or server. A USB external drive and a directly connected disk enclosure are common examples.
• NAS connects to a network and provides centralized file access to multiple authorized devices.
• SAN, or storage area network, provides block-level storage to servers through dedicated storage infrastructure and is primarily used in enterprise environments.

Choose DAS when one workstation needs direct storage with minimal setup. Choose NAS when several devices or users need shared file access. SAN belongs to organizations with enterprise block-storage requirements and the infrastructure to operate it.

For deeper comparisons, read DAS vs. NAS and NAS vs. SAN.

Desktop vs. Rackmount NAS

A desktop NAS sits on a desk, shelf, or equipment cabinet. This is the normal form factor for homes, creators, homelabs, and small offices.

Desktop does not mean silent. Spinning hard drives produce seek noise and vibration, while the enclosure fan adds a steady background sound. If you are sensitive to noise, do not place a multi-bay NAS with hard drives next to your bed or primary recording position. This is one of the most common regrets among first-time buyers.

A rackmount NAS installs in a standard equipment rack. It suits organizations that already have dedicated networking, cooling, power, and server infrastructure. Rackmount systems often provide more drive bays and easier component access, but they are usually louder and more demanding to operate.

If you do not have a rack or a specific infrastructure requirement, choose a desktop NAS.

Scale-Up vs. Scale-Out NAS

A scale-up NAS grows inside one system. You add drives, replace drives with larger ones, install supported memory, or connect an expansion chassis when the model supports one.

The enclosure still has limits. Before buying, check:

• Maximum supported drive capacity
• Maximum memory
• Available drive bays
• Whether M.2 slots are usable as storage pools, as cache only, or both, since this varies by model
• Supported RAID migrations
• Expansion-unit support
• Network upgrade options

A scale-out NAS grows by adding complete storage nodes that work together as a larger storage platform. This architecture belongs primarily in enterprise environments with datasets, user counts, or availability requirements beyond one appliance. Home users and small teams normally need a sensible scale-up plan instead.

ARM vs. x86 NAS

ARM and x86 describe processor architectures. Application support must be checked at the model level.

The ARM-based DH2300 supports backup, file sharing, native Jellyfin, photo management, DLNA, and HDMI playback. It does not support Docker or virtual machines.

Both Intel and AMD manufacture x86 processors used in full-featured NAS systems. Their capabilities are not interchangeable:

• The AMD-based DXP2800 GT supports Docker and virtual machines but does not provide Intel Quick Sync.
• The Intel-based DXP4800 Plus supports Docker, virtual machines, and Quick Sync for compatible hardware-transcoding workflows.

Five Decisions to Make After Choosing the NAS Type

1. How Many Drive Bays Do You Need?

Two bays are enough when capacity requirements are modest and RAID 1 meets your drive-failure tolerance needs. Four bays provide more capacity and RAID flexibility.

Read the 2-bay vs. 4-bay NAS guide before choosing the enclosure.

2. What Network Speed Does Your Workload Require?

Use 1GbE for ordinary backup, documents, and household access. Consider 2.5GbE or 10GbE for large creative files, several active users, or workloads restricted by the roughly 110MB/s practical ceiling of 1GbE. Budget for the switch and client adapter at the same time.

3. Which Drives Will You Install?

Check the required capacity, workload rating, noise, warranty, and compatibility. Do not assume every SATA HDD or M.2 SSD is supported in every slot or storage role.

Use the NAS drive selection guide and the current compatibility list before buying drives.

4. Which RAID Level Will You Use?

RAID can provide drive-failure tolerance, performance, or capacity benefits depending on the level. It is not a backup. The Storage Networking Industry Association notes in its explanation of storage mirroring that mirroring gives no protection against data that has been deleted, overwritten, or compromised.

Understand the capacity math before you buy drives. Four 8TB drives in RAID 5 provide 24TB of decimal usable capacity. Most operating systems report storage in binary units while labeling them “TB,” so the same array typically displays as approximately 21.8TB in the operating system. That difference is unit conversion, not lost space. Filesystem and system overhead then reduce the available figure slightly further.

One caveat on larger drives: rebuilding a RAID 5 array after a drive failure takes substantial time at high capacities, and the array has no remaining redundancy until the rebuild completes. If your drives are large and the data matters, plan for RAID 6 on arrays with enough bays, or accept RAID 5 with a tested independent backup.

Compare the tradeoffs in the UGREEN RAID guide, then maintain an independent backup for important data regardless of the level you choose.

5. Which Applications Must the NAS Run?

Write down the required applications before choosing a model. Include Docker, virtual machines, Plex, Jellyfin, surveillance, computer backup, cloud sync, and any workflow-specific software.

Then verify support on the exact product page, and note whether each application runs natively or only in a container. A feature available on one UGREEN NAS should not be assumed to exist across the entire lineup.

When you are ready to compare current options, browse and filter UGREEN NAS models or use the UGREEN NAS Selector.

Frequently Asked Questions

What are the three main types of NAS?

The three practical buying categories are personal-cloud NAS, full-featured prebuilt NAS, and DIY NAS. Choose personal cloud for simple backup and home media, full-featured prebuilt for Docker and higher-performance workloads, and DIY for custom hardware or software.

Is personal cloud storage the same as NAS?

A personal-cloud device is usually a simplified prebuilt NAS focused on easy backup, sharing, and remote access. The label does not guarantee Docker, virtual machines, or advanced RAID options. The DH2300, for example, runs Jellyfin natively but cannot run Plex because Plex requires Docker. Check the exact model against the applications you need.

Can I run Plex on any NAS?

No. On UGOS Pro, Plex Media Server runs in Docker, so it requires a Docker-capable model such as the DXP2800 GT or DXP4800 Plus. Hardware transcoding adds a second requirement: a compatible Intel Quick Sync processor plus correct configuration, which the Intel-based DXP4800 Plus provides and the AMD-based DXP2800 GT does not.

Should I buy a prebuilt or DIY NAS?

Buy a prebuilt NAS if you want an integrated operating system, vendor updates, supported applications, and one primary support path. Build a DIY NAS if you need custom hardware or software and are willing to handle compatibility, updates, and recovery yourself.