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Synology FlashStation FS6400 Blazingly-fast all-flash server aiming for I/O-intensive applications

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Synology FlashStation FS6400 Blazingly-fast all-flash server aiming for I/O-intensive applications

CPU: Intel Xeon Silver 4110 x2 8-Core 2.1GHz(base) / 3.0 (turbo), RAM: 32 GB DDR4 ECC RDIMM (Max 512GB), USB3.0port x2, Gigabit LAN port x2, 10Gigabit LAN port x2, Expansion Port x1, PCI Gen3 x8 slots (x8 link) x2, 5Years Warranty

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RackStation FS6400

Blazingly-fast all-flash server aiming for I/O-intensive applications

Uncompromising performance

Synology FlashStation FS6400 is a 2U rackmount server designed for I/O-intensive and latency-sensitive tasks, ideal for multimedia post-production, virtual machines, online transaction processing, or database applications.

Download Datasheet

CPU

Dual Intel^® Xeon^® Silver 8-core with NUMA

Memory

DDR4 ECC RDIMM, up to 512GB

High Performance

Over 240,000 iSCSI 4K random write IOPS

Scalability

Up to 72 drives with RX2417sas¹

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. Learn more

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.

Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders

Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots

File- or folder-level data restoration accelerates data recovery and provides more flexibility for businesses

Automatic file self-healing detects and recovers corrupted files without user intervention

Learn more about the benefits of using Btrfs

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.

See the white paper for more technical details regarding RAID F1

Compared with traditional RAID, RAID F1 distributes uneven workload to SSDs to prevent all drives from wearing out simultaneously.

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. Learn more

Security Advisor

Analyze system settings, password strength and network preferences, and remove any possible malware.

AppArmor

A kernel-level enhancement that blocks malicious programs from accessing unauthorized system resources.

AES 256-bit encryption

Encrypt shared folders and network data transmission to avoid unauthorized data access.

2-step verification

Prevent others from logging in to your DSM by generating a six-digit one-time password (OTP) on your mobile device.

Trust level

Customize the trust level in Package Center to avoid installing packages from untrusted sources, safeguarding your NAS from unknown or tampered package files.

5-year warranty

As we're committed to improving product innovation and quality, Synology guarantees a robust and reliable data management experience with a 5-year limited warranty, providing responsive technical support and hardware replacement services to maximize your return on investment.

Powered by Synology DSM

Synology High Availability

Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.

Learn more

Synology Office

Collaborate on documents, spreadsheets, and slides in real time to boost team productivity.

Learn more

Synology MailPlus

Secure, reliable, and private mail server solution with an intuitive and modern mail client.

Learn more

Virtual Machine Manager

Run various operating systems in isolated sandboxes. Seamlessly clone, restore and migrate virtual machines.

Learn more

Security

Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.

Learn more

Snapshot Replication

Schedulable and instantaneous data protection of shared folders and iSCSI LUNs for disaster prevention.

Learn more

1 Power button and indicator
2 Beep off button
3 Drive tray
4 Drive status indicator

5 PSU fan
6 Power port
7 PSU indicator
8 Console port

9 Reset button
10 1GbE RJ-45 port
11 10GbE RJ-45 (10GBASE-T) port
12 USB 3.0 port

13 PCIe expansion slot
14 Expansion port

Notes:

FS6400 supports up to two optional expansion units, which can be either two identical RX1217sas/RX2417sas or one of each.

Specifications

Hardware Specifications
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)
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 supplier's 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* (See all supported drives)	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
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. (Learn more) Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 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 (Learn more)
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
Size (Height x Width x Depth)	88 mm x 482 mm x 724 mm
Weight	17.26 kg
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
Power Recovery
Noise Level*	53.7 dB(A)
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter	800W
Redundant Power Supply
AC Input Power Voltage	100V to 240V AC
Power Frequency	50/60Hz, 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)
Temperature
Operating Temperature	0°C to 35°C (32°F to 95°F)
Storage Temperature	-20°C to 60°C (-5°F to 140°F)
Relative Humidity	5% to 95% RH
Certification	EAC VCCI RCM KC FCC CE BSMI
Warranty	5 Years
Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) Power consumption is measured when fully loaded with HGST 1.8TB HUC101818CS4204 hard drive(s). Noise Level Testing Environment: Fully loaded with Toshiba 600GB AL14SEB060N hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the Synology NAS front and rear; Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
DSM Specifications ( See more )
Storage Management
Maximum Internal Volume Number	256
Maximum iSCSI Target Number	256
Maximum iSCSI LUN	512
iSCSI LUN Clone/Snapshot, Windows ODX
SSD Read/Write Cache (White Paper)
SSD TRIM
RAID Group
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
NFS Kerberos Authentication
Account & Shared Folder
Maximum Local User Accounts	16,000
Maximum Local Groups	512
Maximum Shared Folder	512
Maximum Shared Folder Sync Tasks	32
Synology High Availability
Log Center
Syslog Events per Second	3,000
Virtualization
VMware vSphere 6 with VAAI
Windows Server 2016
Citrix Ready
OpenStack
Add-on Packages (Learn more about the complete add-on package list)
Antivirus by McAfee (Trial)
Central Management System
Synology Chat
Maximum Users	6,000
Notes	The number of concurrent HTTP connections for Synology Chat was configured to the maximum. CPU and RAM usage were both under 80% when the number of maximum users was reached. For tested models with expandable memory, the maximum amount of RAM was installed.
Document Viewer
exFAT Access (Optional)
Synology MailPlus / MailPlus Server
Free Email Accounts	5 (Licenses required for additional accounts)
Maximum Number of Concurrent Users	2,200
Maximum Server Performance	5,721,000 emails per day, approx. 174GB
Notes	The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users. For tested models with expandable memory, the maximum amount of RAM was installed. The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers. Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
Snapshot Replication
Maximum Snapshots per Shared Folder	1,024
Maximum of System Snapshots	65,536
Surveillance Station
Maximum IP cam (Licenses required)	128 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)*	3840 FPS @ 720p (1280x720) 3456 FPS @ 1080p (1920x1080) 1664 FPS @ 3M (2048x1536) 970 FPS @ 5M (2591x1944) 690 FPS @ 4K (3840x2160)
Total FPS (H.265)*	3840 FPS @ 720p (1280x720) 3840 FPS @ 1080p (1920x1080) 3072 FPS @ 3M (2048x1536) 1792 FPS @ 5M (2591x1944) 1140 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*	1260 FPS @ 720p (1280x720) 770 FPS @ 1080p (1920x1080) 560 FPS @ 3M (2048x1536) 400 FPS @ 5M (2591x1944)
Notes	Surveillance Station throughput is tested with Axis network camera, using continuous recording with live view from Surveillance Station and motion detection by camera. Live view and recording are sharing the same stream from the camera.
Synology Drive
Recommended Number of Hosted Files	5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
Recommended Number of Concurrent Sync Clients	2,000 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes	For tested models with expandable memory, the maximum amount of RAM was installed. Exceeding the limits above may result in longer response time in file operations. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Maximum Users	3,400
Notes	Multiple files were opened for testing and each file was edited by 30 users simultaneously. CPU and RAM usage were both under 80% when the number of maximum users was reached. For tested models with expandable memory, the maximum amount of RAM was installed. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Virtual Machine Manager
Recommended Virtual Machine Instances	32 (Learn more)
Recommended Virtual DSM Number (Licenses required)	32 (including 1 Free License)
Notes	Virtual Machine Manager is not supported on hosts running Synology High Availability. The specifications vary depending on system configuration and memory size.
VPN Server
Maximum Connections	40
Environment & Packaging
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	Surveillance Device License Pack D4RD-2666-16G DDR4 ECC RDIMM* D4RD-2666-32G DDR4 ECC RDIMM Expansion Unit: RX2417sas X 2 Expansion Unit: RX1217sas 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. For more information, visit here.