The safest way to protect a NASync DXP6800 Ultra is to keep a copy outside the unit and to choose a task that matches your recovery goal. Use Sync & Backup to synchronize with another UGREEN NAS, use Back up & Restore with rsync or WebDAV for a compatible third-party NAS or server, and use Cloud Drives for supported cloud accounts and object storage. Treat ordinary synchronization as a live mirror: deletions and other changes can propagate. For protection against accidental deletion or ransomware, enable retained backup versions where the workflow supports them, use cloud or destination version history, and test a restore.
Choose between synchronization and backup first
UGREEN exposes synchronization and backup as separate functions. Synchronization keeps selected paths aligned between endpoints; backup is a one-way protection workflow that can retain historical versions. They can be used together, but a sync task is not automatically a historical backup.
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| Route | Best for | What you need | Main recovery limitation |
|---|---|---|---|
| Another UGREEN NAS through Sync & Backup | A second UGREEN unit and straightforward device-to-device replication | The destination must run UGOS Pro with Sync and Backup installed; both devices need network reachability | It is primarily a synchronization operation. Review direction, conflicts and deletion behavior before relying on it for history |
| Remote rsync or WebDAV backup | A compatible third-party NAS, Linux server or other remote endpoint | Rsync or WebDAV enabled on the destination, an account, address, credentials and reachable ports | UGREEN encrypts remote backup files by default; their contents are viewed after restoring them to a UGREEN NAS |
| Cloud Drives | An off-site copy in a supported account or object-storage service | Cloud Drives installed, a provider account or access keys, network access and selected source and destination paths | Cloud synchronization can mirror deletions. Provider versioning or deleted-file recovery must supply the historical safety net |
Use a second NAS when you want fast local recovery and control over the storage hardware. Use an off-site cloud or remote server when a fire, theft, power event or other local incident could affect both the primary NAS and a nearby copy. A robust plan can combine both: a local destination for frequent restores and an off-site destination with retention.
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Check the DXP6800 Ultra and network before creating a task
Confirm firmware and applications
The DXP6800 Ultra Download Center listing showed UGOS Pro 1.20.0.0142, released on 2026-09-21. That is a point-in-time listing, not a promise that every unit has the same build or that all app interfaces are identical. On the NAS, open the system update screen and install the current release offered for your device. Then open App Center and update Sync & Backup and Cloud Drives if you intend to use them.
#1 Best Overall
- 【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.
App names, supported providers and task options can change with firmware and app releases. Record the versions on both NAS devices when troubleshooting a connection or a missing option.
Check destination capacity and access
- Calculate the data set to be protected, plus space for future growth and retained versions. Every retained backup version consumes additional destination storage.
- Create a destination account with only the permissions required for the intended folder when the remote platform supports restricted accounts.
- Verify that the destination is reachable from the DXP6800 Ultra. A local address, VPN route, firewall rule, router mapping or cloud credential can each be a separate dependency.
- Keep recovery credentials, encryption information and administrative access in a secure password manager. A backup that cannot be opened during an incident is not a usable backup.
UGREEN describes the DXP6800 Ultra as a six-bay NAS with six SATA bays and two M.2 NVMe bays, and states a maximum capacity of 208 TB on its product page. That hardware figure describes the unit, not the size or suitability of a backup target. The destination still needs enough free space for the selected data and any version policy.
Route A: synchronize with another UGREEN NAS
This is the most direct native route when the second device also runs UGOS Pro. The remote unit must have Sync and Backup installed. UGREEN documents real-time, manual and scheduled strategies.
1. Prepare the destination NAS
- Install or update UGOS Pro, Sync and Backup on the second UGREEN NAS.
- Sign in with an account that can write to the destination folder. Create a dedicated destination folder rather than pointing a task at the entire volume unless that is genuinely required.
- Note the destination IP address or UGREENlink ID. For a domain-name connection, verify the app-version and port requirements described below.
2. Create the task on the DXP6800 Ultra
- Open Sync & Backup.
- Create a new sync task and choose Sync another UGREEN NAS.
- Enter the destination IP address, UGREENlink ID or supported domain name, then provide the credentials requested by the interface.
- Select the source folders on the DXP6800 Ultra and the remote destination paths.
- Choose real-time, manual or scheduled synchronization. Real-time mode reduces replication delay but depends continuously on the network. A schedule or manual run makes the transfer window explicit and can reduce overnight network activity.
- Review direction, conflict handling and deletion behavior before saving. Confirm which side is authoritative and what happens when the same file changes at both ends.
- Save the task and run a small test containing ordinary files, a large file and a recently changed file.
3. Connect across networks
For a remote UGREEN NAS, UGREEN documents UGREENlink ID as a connection method. It also documents domain-name connections with prerequisites: Sync and Backup must be version V1.1.2.0649 or higher on both devices, and port 22000 must be mapped. Confirm the exact firewall and router configuration for your network rather than exposing more services than necessary.
If a connection fails, test name resolution and reachability from the DXP6800 Ultra, check that the destination account is permitted to write to the selected path, and inspect the task log for authentication, timeout or permission errors.
Rank #2
- 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.
When synchronization is not enough
A mirrored sync can transmit a deletion or an unwanted overwrite. If the source is encrypted by malware or a user removes a folder, the same change may appear on the destination. Do not make a plain mirrored sync your only protection when older states matter. Add a separate versioned backup, enable retention on the destination where available, or use another off-site copy with its own history.
Route B: back up to a third-party NAS or server with rsync or WebDAV
Use this route when the destination is not another UGREEN NAS but provides a supported rsync or WebDAV service. Compatibility depends on the destination product and its configuration; the service must be enabled and reachable before the DXP6800 Ultra can create a task.
1. Enable and restrict the remote service
- On the destination, enable either an rsync server or WebDAV.
- Create an account whose access is limited to the intended backup directory when possible.
- Record the server address, port, username, password and remote path. Confirm whether the server requires a particular TLS or authentication mode.
- Test reachability from the network where the DXP6800 Ultra resides. A service that works from a desktop on the local LAN may still be blocked from the NAS by a firewall or routing rule.
2. Configure Back up & Restore
- On the DXP6800 Ultra, open Sync & Backup and then Back up & Restore.
- Create a task named Backup this UGREEN NAS.
- Select rsync or WebDAV as the destination protocol.
- Enter the destination address and credentials, and set the protocol and port. UGREEN lists rsync’s default port as 873. Its WebDAV defaults are HTTP 5005 and HTTPS 5006; the actual server may use different settings.
- Select the source folders and the remote destination path.
- Configure file filters and the backup version policy if the interface offers them. Retention increases recovery options but consumes additional destination capacity.
- Review the summary, create the task and run it. Start with a small folder so that authentication, permissions and path mapping are proven before transferring the full data set.
3. Understand encryption and restoration
UGREEN states that remote backup files are encrypted by default. The protected contents are viewed after restoring them to a UGREEN NAS through the UGREEN restore workflow, rather than by browsing the remote files as an ordinary directory. Keep the information needed to perform that restore with your disaster-recovery records.
When a backup version policy is enabled, historical versions are stored at the destination. Each additional version uses more remote storage, so set a retention limit that fits the destination and the rate at which your files change. A short retention window may be sufficient for documents, while frequently changing project data may need a larger allowance.
Prefer secure transport
WebDAV over HTTPS is preferable to unencrypted HTTP when traffic crosses an untrusted network. For rsync, use the secure transport or tunnel supported by the destination if available. Strong credentials, least-privilege accounts and firewall restrictions reduce the impact of a stolen password or exposed service.
Rank #3
- 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.
Route C: copy or synchronize to cloud storage with Cloud Drives
Cloud Drives can connect supported cloud accounts and object-storage services, transfer files and create synchronization tasks. The exact providers and task types shown depend on the installed Cloud Drives version. UGREEN’s documentation distinguishes services that can be connected or mounted from services that can be used in a synchronization task, so do not assume that every listed provider supports scheduled, one-way backup semantics.
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- Open App Center and install or update Cloud Drives.
- Add the provider shown in your installed version. Depending on the service, you may enter an account login, bucket name, region, Key ID and application key.
- Grant only the cloud permissions required for the selected bucket or directory.
- Confirm that the DXP6800 Ultra can reach the provider and that the destination has enough capacity.
2. Select a one-way workflow
- Choose the NAS source path and cloud destination path.
- Select the available NAS-to-cloud transfer or one-way synchronization workflow.
- Avoid two-way synchronization for a simple off-site copy when changes made in the cloud must not propagate back to the NAS.
- Set filters, scheduling and any polling or comparison options offered by the app.
- Run a small test, inspect the log and restore sample files before committing the entire NAS.
Backblaze B2 and Amazon S3 support
UGREEN’s June 2026 system update notes add Backblaze B2 support to Cloud Drives for the DXP Series, whose x86 family includes the DXP6800 Ultra. The B2 setup guide describes entering a bucket name, Key ID and application key, then transferring files or creating a sync task.
UGREEN’s May 2026 update notes add Amazon S3 support to Cloud Drives for the DXP Series. S3-compatible services commonly require a bucket, region and access keys, but the fields and supported operations should be confirmed in the installed app. Provider support and task behavior can change independently of the NAS hardware.
Deletion, versions and polling
Cloud sync is a continuing relationship, not a frozen snapshot. UGREEN warns that changes, including deletions, can be reflected across sync endpoints. Enable provider-side object versioning, file history or deleted-file recovery where available, and define a retention period that covers the time in which an accidental deletion could be discovered.
UGREEN also notes that real-time sync may miss changes during network fluctuations. Cloud Drives describes a polling-period setting that periodically compares file lists; enabling polling can affect drive-sleep behavior. If completeness is more important than immediate replication, choose a comparison interval that gives the NAS time to reconnect and reconcile changes, then verify the resulting logs.
Rank #4
- Pro-Performance NAS Engineered for Demanding Workflows: This NAS is built for offices, businesses, and power users who need serious performance. Powered by a pro-performance Intel processor, it serves as a versatile private workstation that delivers smooth performance for running virtual machines and Docker containers. It functions as an IT hub for video editors, developers, virtualization tasks, and growing teams with advanced workflows
- Pro-Grade Core Hardware Performance: Features the Intel Core i3-1315U Processor (6 Cores, 8 Threads, up to 4.5GHz Turbo), offering a significant performance lead. It's paired with 8GB of high-speed DDR5 RAM (expandable to 96GB) and 13th Gen Intel UHD Graphics for smooth multitasking. Dual high-speed network ports (10GbE + 2.5GbE) enable blazing-fast transfers, reaching up to 1.25GB/s
- Ultimate Flexibility with Docker, VMs & Smart AI: It offers comprehensive support for Docker and Virtual Machines, unlocking endless possibilities to run personal websites, smart home hubs, or private development environments. The local AI-powered Photo Album automatically recognizes faces, scenes, and content. All AI processing happens on-device, ensuring your privacy while managing massive photo libraries effortlessly
- Massive Storage & Intuitive All-in-One System: It supports a colossal 144TB capacity (4x HDD + 2x M.2 SSD), enough for approximately 4.2 million 35MB RAW photos, 3.6K 40GB 4K movies, 5 million 30MB lossless music, or 150 million 1MB files. Dual M.2 PCIe 4.0 SSD slots can be used as a high-speed cache or storage pool to eliminate HDD bottlenecks. The intuitive UGOS Pro operating system integrates a media center, photo management, cloud sync, downloads, and more for a one-stop experience
- Enterprise-Grade Data Security & Privacy: Provides multiple RAID configuration options (0, 1, 5, 10) for flexibility between capacity, speed, and protection. Features granular user permission controls (supporting up to 2048 accounts). The Data Vault offers an extra layer of security by hiding and encrypting sensitive files. Certified for strong privacy and data protection by TV SD (ETSI EN 303 645) and TRUSTe
Build a recoverable backup policy
Use separate failure domains
A second NAS in the same room protects against a disk failure but not necessarily theft, fire or a power event affecting the room. An off-site cloud or remote server addresses different risks. Keep at least one copy outside the physical location of the DXP6800 Ultra when the data is difficult or impossible to recreate.
Separate live mirrors from historical copies
Use synchronization for operational replication when you want current files available elsewhere. Use versioned backup or destination history when you need to return to an earlier state. Document which task provides each function so that an operator does not mistake a live mirror for an archive.
Protect the backup control plane
- Use unique credentials for each destination and limit them to the required path.
- Restrict inbound ports with firewall rules or a private network path where practical.
- Store cloud keys and restore information securely, and rotate them according to your security policy.
- Keep the destination account separate from everyday user accounts so a compromised workstation does not automatically control both copies.
Verify the first run and test recovery
A task showing completed is not proof that your files can be recovered. Verification should be part of setup, not an emergency procedure.
- Check the task log for skipped files, permission errors, authentication failures and network interruptions.
- Compare representative file names, sizes and timestamps at the destination. Include nested folders, large files and files with non-ASCII characters if those are part of your data.
- Restore several files to a separate test directory. For remote UGREEN backups, perform the restore through a UGREEN NAS because the backup files are encrypted by default.
- Open restored documents, photos, archives and application exports rather than checking only that they exist.
- Test an older version or deleted-file recovery path if you enabled retention or cloud history.
- Record the task name, destination, schedule, retention, credentials owner and restore procedure. Re-run the test after major firmware, app or destination changes.
Troubleshooting common failures
The other UGREEN NAS is not discovered
Confirm that Sync and Backup is installed on both devices, that the account credentials are valid and that the addresses are reachable from the DXP6800 Ultra. Across networks, verify UGREENlink configuration or the documented domain prerequisites, including version V1.1.2.0649 or newer on both devices and port 22000 mapping. Check router and firewall logs for blocked traffic.
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Re-enter the account and password, check whether the server expects HTTP or HTTPS, and confirm the port. Start with the destination’s documented defaults of rsync 873, WebDAV HTTP 5005 or WebDAV HTTPS 5006, then replace them with the actual server settings if they differ. Verify that the account can write to the selected directory and that the path is expressed in the form expected by that server.
Best Value
- High-Performance NAS with Powerful Procesor: DXP4800 Plus is ideal for small offices, & More. You can enjoy smooth performance and seamless collaboration, while making use of advanced features like Docker and virtual machines. It works semalessly across every device inluding Windows, macOS, Linux, iOS, Android or Google services and so on.
- Better Way to Store Than External Drives: NAS offers centralized storage, automatic backups, remote access, and a wide range of RAID options for easy data recovery even if a drive fails. Massive Storage Capacity: Never worry about storage limits again. With up 144TB capacity, you can store 50 million 1MB photos or 98K 1.5GB movies，5 million 30MB songs! *Hard Drives not included.
- Super-Fast Transfers: Back up 1GB in less than a second using either the 10GbE network port or the 10Gbps USB ports.
- Secure Private Cloud: Retain 100% data ownership with advanced encryption to protect your files. Flexible permission management makes it easy to protect your privacy when collaborating with others.
- AI-Powered Photo Album: Automatically organizes your photos by recognizing faces, scenes, objects, and locations. It can also instantly remove duplicates, freeing up storage space and saving you time.
The task completes but files are missing
Inspect filters, excluded folders and the task log. A real-time cloud task may have encountered a network fluctuation; run a comparison or polling cycle if available. Confirm that the cloud task is transferring the intended source path rather than merely mounting a provider account. For large jobs, allow the initial run to finish before judging the steady-state result.
Storage fills faster than expected
Review retained backup versions, cloud object versions and deleted-file recovery. Historical copies intentionally consume space. Reduce retention only after deciding how far back you must recover, and account for future data growth before setting a new limit.
A restore cannot open the data
Use the documented UGREEN restore workflow for encrypted remote backups, confirm that the destination is complete and check that the required restore credentials or keys are available. Test a different file and review logs for a partial transfer. Do not delete the original backup set until a representative restore has succeeded.
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Current DXP6800 Ultra support context
The DXP6800 Ultra is listed in UGREEN’s DXP product lineup. The model-specific listing at the time of the cited firmware release showed UGOS Pro 1.20.0.0142, while the product page states six SATA bays, two M.2 NVMe bays and a maximum capacity of 208 TB. Those specifications describe the primary appliance; they do not determine how much backup history a destination can retain.
Cloud Drives provider support is version-dependent. UGREEN’s general guide, update notes and dedicated tutorials enumerate providers and task types differently. Confirm the exact provider, transfer mode, schedule and retention controls visible in the Cloud Drives version installed on your NAS before designing a policy around them.
Quick Recap
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