Synology NAS FS6400 24 bay NAS FlashStation (Diskless) Retail

Fast and reliable networking

With multi-LAN design, FS6400 is capable of performing Link Aggregation and failover. For environments requiring a higher speed, two optional Ethernet add-in cards can be installed on PCIe 3.0 slots to provide fast data transmission.

Complete iSCSI and virtualization solutions

Synology iSCSI storage supports most virtualization solutions such as VMware vSphere, Microsoft Hyper-V, Citrix Xen Server, and OpenStack Cinder to enhance work efficiency. You can run and manage multiple virtual machines on Windows, Linux, or DSM using Virtual Machine Manager.

Next-generation file system for better data protection

The Btrfs file system introduces advanced storage technologies and optimized snapshots to prevent data corruption and reduce maintenance overheads. It offers flexible, efficient data protection and recovery tools while ensuring high-level data integrity.

RAID F1

Due to the peculiarities of SSD and RAID technology, a common challenge lies in how to prevent all of the drives from failing at the same time because of the evenly distributed workload. RAID F1 alleviates this problem with a specially designed algorithm to unevenly distribute workload to drives, enhancing the resilience of the storage pool and ensuring your data remains safe.

Digital asset protection

Powered by Synology DiskStation Manager (DSM), Synology NAS offers advanced security measures to protect against sudden data loss and potential security holes.

Hardware Specs

CPU
CPU Model
Intel Xeon Silver 4110 x 2
CPU Architecture
64-bit
CPU Frequency
8-Core 2.1 (base) / 3.0 (turbo) GHz
Hardware Encryption Engine (AES-NI)
Yes

Memory
System Memory
32 GB DDR4 ECC RDIMM
Memory Module Pre-installed
32 GB (16 GB x 2)
Total Memory Slots
16
Memory Expandable up to
512 GB (32 GB x 16)
Notes
Synology reserves the right to replace memory modules with the same or higher frequency based on suppliers product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.

Storage
Drive Bays
24
Maximum Drive Bays with Expansion Unit
48 (RX1217sas) / 72 (RX2417sas)
Compatible Drive Type
2.5" SAS HDD
2.5" SAS SSD
2.5" SATA SSD
Maximum Internal Raw Capacity
184.32 TB (7.68 TB drive x 24) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units
552.96 TB (184.32 TB + 7.68 TB drive x 48) (Capacity may vary by RAID types)
Maximum Single Volume Size
200 TB (for RAID 5 or RAID 6 groups only)
108 TB
Hot Swappable Drive
Yes
Notes
"Compatible drive type" indicates the drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
The maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit.
Each internal volume (may consist of multiple drives) is expandable up to 200TB.

External Ports
RJ-45 1GbE LAN Port
2 (with Link Aggregation / Failover support)
RJ-45 10GbE LAN Port
2 (with Link Aggregation / Failover support)
USB 3.0 Port
2
Expansion Port
1

PCIe
PCIe Expansion
2 x Gen3 x8 slots (x8 link)
Add-In-Card Support
PCIe Network Interface Card

File System
Internal Drives
Btrfs
EXT4
External Drives
Btrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT
Notes
exFAT Access is purchased separately in Package Center.

Appearance
Form Factor (RU)
2U
Rack Installation Support
4-post 19" rack (Synology Rail Kit - RKS1317)
Notes
The rail kit is sold separately

Others
System Fan
80 mm x 80 mm x 4 pcs
Fan Speed Mode
Full-Speed Mode
Cool Mode
Quiet Mode
Easy Replacement System Fan
Yes
Power Recovery
Yes
Noise Level
53.7 dB(A)
Scheduled Power On / Off
Yes
Wake on LAN / WAN
Yes
Power Supply Unit / Adapter
800 W
Redundant Power Supply
Yes
AC Input Power Voltage
100 V to 240 V AC
Power Frequency
50/60 Hz, Single Phase
Power Consumption
288.49 W (Access)
145.8 W (HDD Hibernation)
British Thermal Unit
984.37 BTU/hr (Access)
497.49 BTU/hr (HDD Hibernation)
Notes
Power consumption is measured when its fully loaded with HGST 1.8TB HUC101818CS4204 hard drive(s).
Noise Level Testing Environment: Fully loaded with Toshiba 600GB AL14SEB060N hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A), Temperature: 24.25-25.75^oC, Humidity: 58.2-61.8%

Temperature
Operating Temperature
0^oC to 35^oC (32^oF to 95^oF)
Storage Temperature
-20^oC to 60^oC (-5^oF to 140^oF)
Relative Humidity
5% to 95% RH

Certification
EAC
VCCI
RCM
KC
FCC
CE
BSMI

Environment
RoHS Compliant

Packaging Content
Main Unit X 1
Accessory Pack X 1
AC Power Cord X 2
Quick Installation Guide X 1

Optional Accessories
D4RD-2666-16G DDR4 ECC RDIMM
D4RD-2666-32G DDR4 ECC RDIMM
Surveillance Device License Pack
Expansion Unit: RX1217sas X 2
Expansion Unit: RX2417sas X 2
Synology Ethernet Adapter E10G17-F2
Synology Ethernet Adapter E10G18-T1
Synology Ethernet Adapter E10G18-T2
Synology Rail Kit Sliding - RKS1317
VS360HD
VS960HD
Notes
It is required to use D4RD-2666-16G with identical memory modules of the same capacity and frequency.

Software Specs

Storage Management
Maximum Internal Volume Number
256
Maximum iSCSI Target Number
256
Maximum iSCSI LUN
512
iSCSI LUN Clone/Snapshot, Windows ODX
Yes
SSD Read / Write Cache
Yes
SSD TRIM
Yes
RAID Group
Yes
Supported RAID Type
RAID F1
Basic
JBOD
RAID 0
RAID 1
RAID 5
RAID 6
RAID 10
RAID Migration
Basic to RAID 1
Basic to RAID 5
RAID 1 to RAID 5
RAID 5 to RAID 6
Volume Expansion with Larger HDDs
RAID F1
RAID 1
RAID 5
RAID 6
RAID 10
Volume Expansion by Adding a HDD
RAID F1
JBOD
RAID 5
RAID 6
Global Hot Spare Supported RAID Type
RAID F1
RAID 1
RAID 5
RAID 6
RAID 10

File Services
File Protocol
CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections
8,000
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion)
10,000
Windows Access Control List (ACL) Integration
Yes
NFS Kerberos Authentication
Yes

Account and Shared Folder
Maximum Local User Accounts
16,000
Maximum Local Groups
512
Maximum Shared Folder
512
Maximum Shared Folder Sync Tasks
32

High Availability
Synology High Availability
Yes

Log Center
Syslog Events per Second
3,000