QNAP ES1686dc Series - Page 6

Component ES1686dc-2123IT-64G
ES1686dc-2145NT-96G
ES1686dc-2145NT-128G
Memory slots 8 x DDR4 RDIMM or LRDIMM slots per controller
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 specifications.
Using unsupported modules may degrade
performance, cause errors, or prevent the operating
system from starting.
You can only use one type of dual in-line memory
module (DIMM) at a time. Do not use registered DIMM
(RDIMM) with load-reduction DIMM (LRDIMM)
memory.
Maximum memory 512 GB RAM: 8 x 64 GB
Flash memory 4 GB (dual boot OS protection)
Cache for Copy to Flash 64 GB per controller
Storage
Drive bays 16 x 3.5-inch SAS 12 Gbps
Note
The interface is backward compatible to SAS 6 Gbps.
Drive compatibility • 3.5-inch SATA hard disk drives
• 3.5-inch SAS hard disk drives
• 2.5-inch SATA hard disk drives
• 2.5-inch SATA solid-state drives
• 2.5-inch SAS hard disk drives
• 2.5-inch SAS solid-state drives
M.2 SSD slots 2 x M.2 SSD slots per controller
Note
These slots support SATA 6 Gbps and PCIe Gen 3 x4
NVMe SSDs.
M.2 SSD form factor 2280
SSD cache acceleration support • 3.5-inch drive bays 1 to 16
• M.2 SSD slots 1 to 2
• Optional: M.2 SSD slots on an M.2 SSD expansion card
Network
10 Gigabit Ethernet ports 4 x 10 GbE SFP+ ports per controller
Gigabit Ethernet ports 3 x GbE RJ45 ports per controller
External I/O Ports & Expansion Slots
ES1686dc User Guide
Product Overview 5