TopTower N6850 - NAS Thecus - Free user manual and instructions
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| Product Type | NAS (Network Attached Storage) |
| Form Factor | Tower |
| Number of Drive Bays | 6 |
| Compatible Drive Types | 3.5" or 2.5" SATA HDD/SSD |
| Processor | Intel Core i3-4330 (dual-core, 3.5 GHz) |
| System Memory | 4 GB DDR3 (upgradeable to 32 GB) |
| Maximum Raw Capacity | Up to 120 TB (using 20 TB drives) |
| RAID Support | RAID 0, 1, 5, 6, 10, JBOD |
| Network Interfaces | 2 x Gigabit Ethernet (RJ-45) |
| USB Ports | 2 x USB 3.0, 2 x USB 2.0 |
| Other Interfaces | HDMI, eSATA, VGA (depending on model revision) |
| Operating System | ThecusOS 7 (Linux-based) |
| Protocols | SMB/CIFS, NFS, AFP, FTP, WebDAV, iSCSI |
| Cooling | 2 x 80mm rear fans (temperature controlled) |
| Power Supply | Internal 200W (80 Plus Bronze) |
| Dimensions | 275 mm x 230 mm x 250 mm (H x W x D) |
| Weight | Approximately 8.5 kg (without drives) |
| Power Consumption | Typical: 60W (idle), 90W (active) |
| Operating Temperature | 5°C to 40°C |
| Humidity | 10% to 80% (non-condensing) |
| Maintenance | Clean with dry cloth; ensure proper ventilation; update firmware regularly |
| Safety | Use surge protector; avoid water; do not disassemble power supply |
| Spare Parts / Repairability | Replacement fans and power supply available; drives are user-replaceable; RAM upgradeable |
Frequently Asked Questions - TopTower N6850 Thecus
How do I set up my Thecus TopTower N6850 for the first time?
Connect the NAS to your network via Ethernet, insert drives, and power on. Use the Thecus Setup Wizard or access the web interface at the default IP to complete initialization and configure RAID.
What RAID levels does the N6850 support?
It supports RAID 0, 1, 5, 6, 10, and JBOD. RAID 5 and 6 provide parity protection; RAID 0 offers striping for performance but no redundancy.
Can I expand storage without losing data?
Yes, with RAID 5 or 6, you can replace drives with larger ones one by one and use the RAID Expansion feature in ThecusOS. Some modes also allow adding external USB/eSATA enclosures.
How do I access my files remotely?
Enable Cloud services or FTP in the OS settings. You can also use the Thecus Data Access app (iOS/Android) or set up a VPN for secure remote access.
What should I do if the NAS overheats?
Ensure the vents are clear and fans are spinning. Check the System Dashboard for temperature warnings. Clean dust from filters and relocate to a cooler area if needed.
Can I use drives of different sizes?
Yes, but for RAID arrays, the NAS will use the smallest drive capacity for each disk in the array. Mixing sizes is more efficient in JBOD or Flex-RAID configurations.
How do I reset the admin password?
Press and hold the Reset button on the back panel for 10 seconds after power-on. This resets the admin password to default and restores network settings.
Does the N6850 support Plex Media Server?
Yes, you can install Plex from the Thecus App Center. Ensure the CPU and RAM meet the requirements for transcoding; the Intel Core i3 is capable of multiple streams.
What hard drives are recommended?
Thecus recommends NAS-class drives such as WD Red, Seagate IronWolf, or Toshiba N300 for 24/7 operation and RAID compatibility. Avoid desktop drives.
How do I perform a factory reset?
Go to System Setup > Factory Default in the web interface, or press the reset button for more than 10 seconds. This erases all settings and data on the system disks.
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