Synology RackStation RS4021XS+ NAS/storage server Rack (3U) Ethernet LAN Black D-1541

Identifiers
MPN	Synology RS4021XS
Dimensions / Weight
Key Features
AC input frequency	50/60 Hz
Backup function	Yes
Certification	FCC CE BSMI VCCI RCM EAC CCC KC UL
Chassis type	Rack (3U)
Colour	Black
Cooling type	Active
Depth	656.5 mm
Device class	Small & Medium Business
Ethernet LAN ports	6
Fan diameter	8 cm
Harmonized System HS code	84714100
Height	132.3 mm
Installed storage drive type	No
Intel Secure Key Technology version	1.00
Internal memory	16384 MB
Internal memory type	DDR4
Maximum CPU configuration	1
Maximum Ethernet LAN data rate supported	10000 Mbit/s
Maximum RAM supported	64 GB
Memory form factor	UDIMM
Noise Level	44.7 dB
Operating relative humidity	5 - 95 %
Operating temperature	0 - 35 °C
PCI Express x8 Gen 3.x slots	2
Power consumption	145.79 W
Power consumption HDD standby	62.68 W
Power supply unit PSU capacity	800 W
Processor boost frequency	2.7 GHz
Processor family	Intel® Xeon®
Processor frequency	2.1 GHz
Processor model	D-1541
RAID levels	5, 6
Storage drive interface	Serial ATA II, Serial ATA III
Storage drive sizes supported	2.5,3.5"
Storage drives supported	16
Storage temperature	-20 - 60 °C
Supported storage drive types	HDD & SSD
Type	Storage server
Weight	17.4 kg
Width	482 mm

Synology is a Taiwanese company that makes network-attached storage (NAS) devices. These devices allow users to store data on a central server that can be accessed by multiple devices on a network. Synology's NAS devices are popular with home users and small businesses because they are easy to use and offer a wide range of features.