Synology RackStation RS3621RPxs NAS Rack (2U) Intel® Xeon® D D-1531 8 GB DDR4 48 TB HDD DiskStation Manager Black

Safeguard your business assets
Synology RS3621RPxs is a powerful 12-bay storage server. Its 6-core processor enables compute-intensive services while its redundant power, ECC memory, and Btrfs file system safeguard mission-critical data. Capable of delivering 189,098 4K random read IOPS and 4,718 MB/s sequential read throughput1, it is ideal for small businesses.

Reliability first
Service continuity is at the core of the RS3621RPxs design.

Redundant power
Dual PSUs provide protection against a PSU failure or accidental cord removal while hot-swappable fans can be replaced without powering down the system.

Near-zero downtime
Synology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover.

Next-generation file system
Btrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots.

Customize to suit
The two built-in PCIe slots allow users to customize the RS3621RPxs to satisfy unique performance, networking, and storage requirements2.

10GbE ready
Support for 10GbE NICs expands the throughput of the unit by up to 5x times using link aggregation.

SSD cache3
Boost read/write IOPS by up to 16 times by enabling SSD cache via our Synology M.2 NVMe adapter cards and SNV3000 Series SSDs or by installing one or more 2.5” SAT5200 SSDs.

On-demand drive bays
Expand to 36 drive bays using two RX1217(RP) expansion units with minimal intervention.

Hyper Backup
A comprehensive backup and recovery solution for securing data stored on Synology servers. Backup data locally, to another Synology device, rsync server, or cloud-based storage such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2. Deduplication4, integrity checks, and incremental transfer technology reduce bandwidth and storage used.

Snapshot Replication
Easily schedule flexible point-in-time backups of shared folders and iSCSI LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption.

Storage for virtualization
Synology iSCSI storage supports mainstream virtualization solutions with an easy management interface to enhance usability. VMware vSphere 6.5 and VAAI integration helps offload storage operations. Windows Offloaded Data Transfer (ODX) speeds up data transfer. OpenStack Cinder support turns your Synology NAS into a block-based storage component. Additionally, Synology Storage Console enables even more simplified storage provisioning and management options in VMware and Windows environments

Works best with Synology drives
Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.

Storage drive capacity	4 TB
Supported storage drive interfaces	Serial ATA II, Serial ATA III
Storage drive sizes supported	3.5,2.5"
RAID support	Yes
RAID levels	0, 1, 5, 6, 10, F1, JBOD
Online RAID migration	Yes
Online RAID expansion	Yes
Hot-swap drive bays	Yes
Supported file systems	BTRFS, Fat, HFS+, NTFS, exFAT, ext3, ext4
Storage drives installed	Yes
Total installed storage capacity	48 TB
Number of storage drives installed	12
Number of storage drives supported	12
Installed storage drive type	HDD
Supported storage drive types	HDD & SSD
Processor manufacturer	Intel
Processor family	Intel® Xeon® D
Processor model	D-1531
Processor frequency	2.2 GHz
Processor boost frequency	2.7 GHz
Processor cores	6
Processor threads	12
Processor cache	9 MB
CPU configuration (max)	1
Conflict-Free processor	Yes
Internal memory	8 GB
Internal memory type	DDR4
Maximum RAM supported	64 GB
Memory slots	4
Memory form factor	UDIMM
ECC	Yes
Ethernet LAN	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s
iSCSI support	Yes
Wake-on-LAN ready	Yes
Supported network protocols	SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN
Link aggregation	Yes
USB port	Yes
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
Ethernet LAN (RJ-45) ports	4
PCI Express x8 (Gen 3.x) slots	2
Chassis type	Rack (2U)
Cooling type	Active
Product colour	Black
Number of fans	4 fan(s)
Fan diameter	8 cm
LED indicators	Yes
Type	NAS
Device class	Small & Medium Business
Backup function	Yes
Backup features	Cloud, iSCSI LUN
Multilingual support	Yes
Number of users	4000 user(s)
Noise level	50.2 dB
Third-party support	Yes
Snapshot	Yes
Web-based management	Yes
Security algorithms	HTTPS, SSH, SSL/TLS
Access Control List (ACL)	Yes
Reset button	Yes
On/off switch	Yes
Built-in iTunes server	Yes
Built-in FTP server	Yes
Browser supported	Chrome, Firefox, Edge, Internet Explorer, Safari
System log	Yes
Share folder	SMB/NFS/AFP/FTP
Operating system installed	DiskStation Manager
Windows operating systems supported	Yes
Mac operating systems supported	Yes
Power supply location	Built-in
Power supply unit (PSU) capacity	500 W
Redundant power supply (RPS) support	Yes
Power consumption (typical)	140.01 W
Power consumption (HDD standby)	65.94 W
AC input voltage	100 - 240 V
Width	482 mm
Depth	724 mm
Height	88 mm
Cables included	AC
Power cables quantity	2
Embedded options available	No
Enhanced Intel SpeedStep Technology	Yes
Execute Disable Bit	Yes
Idle States	Yes
Intel 64	Yes
Intel Enhanced Halt State	Yes
Intel Secure Key Technology version	1.00
Intel Trusted Execution Technology	Yes
Intel TSX-NI	Yes
Intel TSX-NI version	1.00
Intel Virtualization Technology (VT-x)	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes
Intel VT-x with Extended Page Tables (EPT)	Yes
Sustainability compliance	Yes
Operating temperature (T-T)	0 - 35 °C
Operating relative humidity (H-H)	5 - 95%
Storage temperature (T-T)	-20 - 60 °C
Storage relative humidity (H-H)	5 - 95%
Operating altitude	0 - 5000 m
Compliance certificates	RoHS