Component TS-855X-8G
Memory slots 4 x U-DIMM DDR4
Important
Use only QNAP memory modules to maintain system
performance and stability. For NAS devices with more
than one memory slot, use QNAP modules with identical
specications.
Using unsupported modules may degrade performance,
cause errors, or prevent the operating system from starting.
Note
This device supports ECC memory modules.
Maximum memory 128 GB RAM: 4 x 32 GB
Flash memory 5 GB (dual-boot OS protection)
Storage
Drive bays • 6 x 3.5-inch SATA 6 Gbps
• 2 x 2.5-inch SATA 6 Gbps
Tip
The drive bays are backward compatible with SATA 3 Gbps
drives.
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
Note
You can purchase tray bases from QNAP or an authorized
reseller. For details, go to https://shop.qnap.com/.
M.2 SSD slots 2 x PCIe Gen 3 x4 NVMe
M.2 SSD form factor 2280
SSD cache acceleration
support
Supported.
Hot-swapping The device supports hot-swapping drives except for the following:
• M.2 SSDs
• SSD cache drives
• SSDs using PCIe expansion slots
Network
10 Gigabit network
interface
1 x 10G BASE-T
TS-855X User Guide
Product Overview 4
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