UGREEN DXP4800 Plus

[Enquiries]

I have a new UGREEN DXP4800 Plus with the following.
• 4) 16TB Seagate IronWolf Pro ST16000NT001 16TB 7200 RPM 256MB Cache 3.5" Internal Hard Drive
• 2) Samsung 16GB DDR5 5600MHz PC5-44800 SODIMM 1Rx8 Single Rank CL46 1.1v 262pin Non-ECC M425R2GA3BB0-CWM Laptop Notebook RAM Memory Upgrade
• 2) SAMSUNG 990 PRO w/ Heatsink SSD 2TB, PCIe Gen4 M.2 2280 Internal Solid State Hard Drive, Seq. Read Speeds Up To 7,450MB/s for High End Computing, Workstations, Compatible w/ PlayStation 5, MZ-V9P2T0CW
• OS TrueNAS 25.10.1- Goldeye
• I am using RAIDZ2
• Datasets are setup as follows, Main as the Parent, then Documents, Photos and Videos as the children.
• Datasets are SMB and they all show unlocked.
I am going to use it for my home network just to store important documents, photos, and videos.
I cannot figure out how to do the following.
1. Encrypt the HD/Data
2. Setup the S.M.A.R.T. test.
3. Setup the SSD
I also have screen shots if that would be helpful.
Thank you for all your help.

[ed]

1. Encrypting your pool or datasets

In TrueNAS Scale:

To encrypt the entire pool (recommended for new builds):
Settings Storage
Click your pool (Main)
Under the three dot menu choose Export/Disconnect
Select Enable encryption and reimport the pool

This applies native ZFS encryption and gives you a recovery key you must store safely.

If you only want to encrypt specific datasets:
Storage
Click a dataset such as Documents
Edit
Change Encryption Options to:
Enable encryption
Select AES 256 GCM
Set a passphrase or let TrueNAS create a key

You’ll see the lock icon appear once encryption is active.

⸻

2. Setting up SMART tests

Go to:
Data Protection SMART Tests Add

Create two tests:

• Short test
Type: Short
Schedule: Daily

• Long test
Type: Long
Schedule: Weekly (pick a time the NAS is idle)

TrueNAS automatically detects all attached HDDs.

⸻

3. Setting up the NVMe SSDs

Since you have two Samsung 990 Pro drives, you can use them in either of these roles:

Option A: Metadata/SLOG (for sync workloads)
Most home users do NOT need this unless using VMs or databases.

Option B: App Pool (recommended)
Apps on TrueNAS Scale run much faster on SSD.

To configure:
Storage
Add ZFS Pool
Create a new pool called “Apps” or “NVMe” and add both NVMe as a mirror
Select this pool under Apps so Docker and Kubernetes use it.

Option C: Special Metadata Device
This improves small file performance for documents and photos.

To add:
Storage
Click your RAIDZ2 pool
Manage Devices
Add Special / Metadata Device
Choose one NVMe (or mirror both).

If you’re storing lots of photos, this is a major speed improvement.