Imagine your hard drive is full, your cloud storage bill keeps climbing, and you can never find the family photos you need. You need a central, secure, and expandable storage hub. A 4 bay NAS (Network Attached Storage) gives you exactly that: private cloud access, data protection, and the ability to stream media to any device in your home. In this guide, we compare the best 4 bay NAS options for 2026, from entry-level models perfect for beginners to powerhouses built for creative pros and IT teams. Whether you are setting up a home media server or managing a small office storage system, these picks have you covered. For more on media streaming, check out our guide to the best NAS for media servers.

Buying Guide: How to Choose a 4 Bay NAS

Performance and Processor

The CPU and RAM determine how many tasks your NAS can handle simultaneously. For basic file sharing and photo backup, an entry-level processor like the one in the UGREEN DH4300 Plus is sufficient. But if you plan to run Docker containers, virtual machines, or edit 4K video directly off the NAS, you will want a more powerful chip such as the Intel N100 in the Yxk Zero1 Pro or the AMD Ryzen in the UGREEN DXP4800 GT. More RAM also helps multitasking; look for at least 8 GB, with expansion options for future growth.

Network Connectivity and Transfer Speeds

Faster network ports mean quicker file transfers and smoother streaming. Most modern NAS units come with 2.5 GbE ports, which is enough for most home users. For creative professionals or teams who frequently move large files, a model with 10 GbE (like the UGREEN DXP4800 GT or DXP4800 Pro) can dramatically reduce wait times. Some NAS models support link aggregation, which combines multiple ports for even higher bandwidth. If you work with high-resolution media, a 10 GbE connection is a worthwhile investment.

Software Ecosystem and Ease of Use

The operating system and mobile apps define your daily experience. User-friendly NAS like the UGREEN DH4300 Plus offer simple setup via NFC and a polished app for photo management and file sharing. For power users, platforms that support Docker, virtual machines, and third-party operating systems (like TrueNAS or Unraid) provide endless customization. The Yxk Zero1 Pro and the UGREEN DXP4800 Pro both offer these advanced features. If you value privacy and local control, look for NAS that emphasize local account mode and encryption certifications like TRUSTe and ETSI.

Storage Capacity and Expandability

All 4 bay NAS support up to four hard drives, but the total capacity can reach 144 TB with today’s largest drives. RAID configurations let you balance speed, capacity, and redundancy. If you need additional speed for frequently accessed files, look for M.2 NVMe slots that can act as cache or extra storage. Note that the BUFFALO LinkStation 220 is a 2 bay model, so it offers less capacity but is a great value if you only need a simple home cloud. For more on 2 bay options, see our best 2 bay NAS recommendations.

Final Thoughts

After evaluating these top 4 bay NAS models, your choice really comes down to your specific needs and technical comfort. For beginners and families who want a hassle free private cloud with excellent photo management, the UGREEN NAS DH4300 Plus 4-Bay for Beginners offers an intuitive app and robust privacy features at a compelling price. On the other hand, if you are a tech enthusiast or professional who needs heavy multitasking, Docker support, and ultrafast 10 GbE networking, the UGREEN NAS DXP4800 Pro 4-Bay for IT Professionals is engineered to handle demanding workflows with ease. Either way, a 4 bay NAS gives you total control over your data, freeing you from cloud subscription fatigue and scattered external drives.

Frequently Asked Questions

What is the difference between a 2 bay and a 4 bay NAS?

A 2 bay NAS can hold two hard drives, while a 4 bay NAS holds four. More bays mean more storage capacity and more flexible RAID configurations (like RAID 5 or 6) that provide better data protection. If you plan to store large media libraries or need redundancy, a 4 bay NAS is the better choice. For lighter use, a 2 bay model like the BUFFALO LinkStation 220 may suffice.

Can I run Plex on a 4 bay NAS?

Yes, most modern 4 bay NAS can run Plex Media Server. For smooth 4K transcoding, choose a NAS with a powerful processor like the Intel N100 or AMD Ryzen. Models like the UGREEN DXP4800 GT and Yxk Zero1 Pro support Plex via Docker. For detailed recommendations, see our best NAS for Plex guide.

Do I need to buy hard drives separately for a NAS?

In most cases, yes. NAS units are often sold without drives (diskless) so you can choose your preferred capacity and brand. The BUFFALO LinkStation 220 is an exception with 4TB of drives included. Always check the product description. If you buy a diskless NAS, you will need to purchase compatible HDDs or SSDs separately.

Is a 4 bay NAS suitable for remote work?

Absolutely. A 4 bay NAS functions as a private cloud, allowing you to access files from anywhere via a mobile app or web browser. Models like the UGREEN DH4300 Plus and DXP4800 Pro offer secure remote access with encryption and user permissions. This makes them ideal for remote workers who need fast, reliable file sharing without third party cloud costs.