QNAP TS-855X-8G-US SAN/NAS Storage System - TS 855X 8G Intel Atom C5125 Octa core (8 Core) 2.80 GHz 8 x HDD Supported 0 x HDD Installed 8 x SSD Supported 0 x SSD Installed 8 GB RAM DDR4 SDRAM Serial ATA/600 Controller RAID Supported 0, 1, 5, 6,

• Number of Hard Drives Supported:
  8
  
• Number of Hard Drives Installed:
  0
  
• Number of Solid State Drive Supported:
  8
  
• Number of Solid State Drive Installed:
  0
  
• Flash Memory Capacity:
  5 GB
  

• Processor Manufacturer:
  Intel
  
• Processor Type:
  Atom
  
• Processor Model:
  C5125
  
• Processor Core:
  Octa-core (8 Core)
  
• Processor Speed:
  2.80 GHz
  

• Standard Memory:
  8 GB
  
• Memory Technology:
  DDR4 SDRAM
  

• Ethernet Technology:
  2.5 Gigabit Ethernet
  

• Number of Total Expansion Bays:
  8
  
• Number of 2.5"/3.5" Bays:
  8
  
• Total Number of Expansion Slots:
  2
  
• Expansion Slot Type:
  PCI Express 3.0 x4
  

• Controller Type:
  Serial ATA/600
  
• RAID Supported:
  Yes
  
• RAID Levels:
  0, 1, 5, 6, 10, 50, 60, JBOD
  

• Total Number of USB Ports:
  4
  
• Number of USB 2.0 Ports:
  1
  
• Number of USB 3.2 Gen 1 Ports:
  3
  
• Network (RJ-45):
  Yes
  
• Number of Network (RJ-45) Ports:
  2
  

• Operating System:
  QTS 5.1.0
  

• Protocols:
  LDAP, HTTPS, L2TP, SFTP, DHCP, SSH, IPSec, FTPS, AFP, FTP, CIFS/SMB, SNMPv2, IPv4, WEBDAV, Telnet, SSL, iSCSI, TLS, TFTP, NFS, HTTP, FXP, DDNS, IPv6, PPTP
  

• Number of Power Supplies Installed:
  2
  
• Maximum Power Supply Wattage:
  250 W
  
• Redundant Power Supply:
  Yes
  

• Height:
  9.1"
  
• Width:
  11.5"
  
• Depth:
  12.6"
  
• Form Factor:
  Rack-mountable
  
• Rack Height:
  2U
  
• Weight (Approximate):
  18.74 lb
  

CPU
Intel Atom C5125 8-core processor, 2.8GHz
CPU Architecture
64-bit x86
Floating Point Unit
Yes
Encryption Engine
Yes (AES-NI)
System Memory
8 GB non-ECC UDIMM DDR4 (1 x 8 GB)
Maximum Memory
128 GB (4 x 32 GB)
Memory Slot
4 x U-DIMM DDR4
Support ECC memory
Flash Memory
5GB (Dual boot OS protection)
Drive Bay
6 x 3.5-inch + 2 x 2.5-inch SATA 6Gb/s, 3Gb/s
Drive Compatibility
3.5-inch bays:
3.5-inch SATA hard disk drives
2.5-inch SATA solid state drives
2.5-inch bays:
2.5-inch SATA solid state drives
Hot-swappable
Yes
The following are not hot-swappable: M.2 SSDs, SSD cache drives, SSDs using PCIe expansion slots.
M.2 Slot
2 x M.2 2280 PCIe Gen 3 x4 slots
Compatible with NVMe SSD PCIe Gen 3 and above. Please refer to https://www.qnap.com/compatibility/ for compatibility. The M.2 SSD is not included as standard. M.2 SSD operations can easily generate excessive heat. It is recommended to install a heatsink (from QNAP or a third-party provider) on the M.2 SSD.
SSD Cache Acceleration Support
Yes
SR-IOV
Yes
2.5 Gigabit Ethernet Port (2.5G/1G/100M)
2 (2.5G/1G/100M/10M)
10 Gigabit Ethernet Port
1 x 10GBASE-T
25 Gigabit Ethernet Port
Optional via PCIe expansion card
Wake on LAN (WOL)
Yes
Only the 2.5GbE port
Jumbo Frame
Yes
PCIe Slot
2
Slot 1: PCIe Gen 3 x4
Slot 2: PCIe Gen 3 x4
Card dimensions for PCIe slot 1260 x 111.15 x 18.76 mm / 10.25 x 4.38 x 0.74 inches
Card dimensions for PCIe slot 2150 x 68.9 x 18.76 mm / 5.90 x 2.71 x 0.74 inches.