Synology release RS2821RP+

processor	Processor model	AMD Ryzen V1500B
	Number of CPUs	1
	Processor architecture	64-bit
	Processor clock	4-core 2.2 GHz
	Hardware encryption engine (AES-NI)
Memory	System memory	4 GB DDR4 ECC UDIMM
	Pre-installed memory modules	4 GB (4 GB x 1)
	Total memory slots	2
	Maximum memory capacity	32 GB (16 GB x 2)
	Remarks	Please purchase Synology original memory modules for best compatibility and reliability. If Synology memory modules are not used to expand the memory capacity, Synology will not be able to provide complete product warranty or technical support. Synology reserves the right to replace memory components with the same or higher frequency depending on the supplier’s product availability. Its compatibility and stability have passed the same rigorous testing and inspection, please feel free to use it.
Storage device	Number of Disk Slots	16
	Maximum number of disk bays for installing expansion units	28 (RX1217/RX1217RP x 1)
	Compatible Disk Type* (See all supported disks)	3.5″ SATA HDD 2.5″ SATA HDD 2.5″ SATA SSD
	Maximum single storage capacity*	108 TB
	Disk hot swap support
	Remarks	It is strongly recommended that you install the hard drives listed in the compatibility list of this model. Using unverified hard drives may cause storage pool and storage space creation failures. Synology does not provide technical support services for devices that use unsupported components. Compatible disk types refer to the types of hard disks that are confirmed to be compatible with the product after actual testing, and the maximum speed limit of non-hard disk bays The internal storage space can be expanded, but the single storage space after expansion cannot exceed 108 TB.
External port	RJ-45 1GbE network port	4 (Support Link Aggregation / Failover)
	USB 3.2 Gen 1 port*	2
	Expansion port	1
	Remarks	USB-IF renamed the standard formerly known as USB 3.0 to USB 3.2 Gen 1 in 2019.
PCIe	PCIe expansion	1 x Gen3 x8 slot (x4 link)
File system	Internal disk	Btrfs EXT4
	External disk	Btrfs EXT4 EXT3 FAT NTFS HFS+ exFAT*
	Remarks	exFAT Access needs to be purchased separately from the Kit Center.
Exterior	Dimensions (rack unit)	3U
	Size (Height X Width X Depth)	132.3 mm x 482 mm x 656.5 mm
	weight	17.1 kg
	Rack installation support*	Four-post 19-inch (Synology Rack Kit- RKS1317 )
	Remarks	Rack kit needs to be purchased separately
other projects	System fan	80 mm x 80 mm x 3 pcs
	Fan mode	Full speed mode Low temperature mode Silent mode
	Replaceable system fan
	Automatic power recovery
	Noise value*	53.5 dB(A)
	Timer switch
	Wake on LAN
	Power supply/transformer	550 W
	Dual power supply
	AC input voltage	100 V to 240 V AC
	Current frequency	50/60 Hz, single frequency
	Power consumption power*	97.54 W (Access) 49.57 W (HDD Hibernation)
	British Thermal Unit	332.61 BTU/hr (Access) 169.03 BTU/hr (HDD hibernation)
	Remarks	The power consumption test data is obtained when the Western Digital 1TB WD10EFRX hard drive is full. Noise level test environment: When the Seagate 2TB ST2000VN000 hard disk is in standby mode, two GRAS Type 40AE microphones are set up at a distance of 1 meter before and after the Synology NAS; background noise level: 16.49-17.51 dB(A); temperature: Celsius 24.25-25.75 degrees; humidity: 58.2-61.8%.
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 body	FCC CE BSMI EAC CCC KC UL VCCI RCM
Warranty	Hardware warranty for 3 years, which can be extended to 5 years coverage- EW202
	Remarks	The warranty period starts from the date of purchase stated on the purchase receipt. (See more)
surroundings	RoHS compliant
Package contents	Host X 1 Accessory bag X 1 Power cord X 2 Quick Installation Guide X 1
Optional accessories	DDR4 ECC UDIMM: D4EU01-4G / D4EC-2666-8G / D4EC-2666-16G Expansion unit: RX1217 / RX1217RP 3.5″ SATA HDD: HAT5300 2.5″ SATA SSD: SAT5200 M.2 SSD & 10GbE combo adapter card: E10M20-T1 M.2 SSD adapter card: M2D20 25GbE network interface card: E25G21-F2 10GbE network interface card: E10G21-F2 / E10G18-T2 / E10G18-T1 Sliding rack kit: RKS1317 VisualStation: VS960HD / VS360HD Monitoring device authorization
	Remarks	The memory module will operate at the maximum frequency set by the CPU manufacturer.

DSM product specifications
Storage space management	Maximum storage space	64
	SSD read/write cache (White Paper)
	SSD TRIM
	Support RAID disk array type	Synology Hybrid RAID Basic JBOD RAID 0 RAID 1 RAID 5 RAID 6 RAID 10
	RAID configuration migration	Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6
	Use larger hard drives to expand storage space	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 RAID 10
	Add hard drives to expand storage space	Synology Hybrid RAID JBOD RAID 5 RAID 6
	Global Hot Spare supports RAID types	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 RAID 10
File service	File agreement	SMB/AFP/NFS/FTP/WebDAV
	Maximum number of simultaneous SMB/AFP/FTP connections	1,000
	Maximum number of simultaneous SMB/AFP/FTP connections (equipped with extended memory)	2,000
	Windows Access Control List (ACL) integration
	NFS Kerberos authentication
	Remarks	For data equipped with expanded memory, all memory slots have been tested with memory capacity up to the upper limit that can be supported. The test standard is based on the maximum number of simultaneous connections supported by this model. During the test, 25% of the connections were file transfers at the same time. The transmission process only ensures that the connection is uninterrupted, and the minimum transmission speed cannot be guaranteed.
Accounts and shared folders	Maximum number of local user accounts	2,048
	Maximum number of local groups	256
	Maximum number of shared folders	512
	Maximum shared folder synchronization task	16
High availability	Synology High Availability
Log center	Logs received per second	800
Virtualization support	VMware vSphere with VAAI
	Windows Server 2016
	Windows Server 2019
	Citrix Ready
	OpenStack
General specifications	Network protocol	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
	Supported browsers	Google Chrome Firefox Microsoft Edge Internet Explorer 11 or above Safari 13 or above Safari (iOS 13.0 or above) Google Chrome (Android 11.0 or above)
	Supported languages	English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไ긗ย, Chinese Simplified Chinese, Traditional Chinese

Antivirus by McAfee (Trial)
Central Management System
Synology Chat	Maximum number of users	1,500
	Remarks	The maximum number of simultaneous HTTP connections has been adjusted to the maximum when testing Synology Chat. For models with expandable memory, the maximum capacity memory has been installed during testing.
Document Viewer
Download Station	Maximum number of download tasks	80
exFAT Access (optional)
iSCSI Manager	Maximum number of iSCSI targets	128
	Maximum number of iSCSI LUNs	256
	iSCSI LUN Clone/Snapshot, Windows Offload Data Transfer (ODX)
Synology MailPlus / MailPlus Server	Number of free email accounts	5 (If you want to have more email accounts, you need to purchase additional authorization)
	Maximum number of simultaneous online	150
	Maximum server performance	1,484,000 emails/day, about 45GB
	Remarks	All models with more than 4 hard drive bays have installed two SSDs and configured them as SSD caches. For models with expandable memory, the maximum capacity memory has been installed during testing. In the high-availability mode, the performance of the mail system will be slightly reduced due to the data synchronization between the two servers. In all the above tests, the activated functions include: anti-spam, anti-virus, DNSBL, greylisting, content scanning, full-text search (English only).
Media Server	DLNA compatible
Moments	Face recognition
	Subject identification
	Automatic color correction and angle correction
	Moments carefully selected
Snapshot Replication	Maximum number of snapshots supported by a single shared folder	1,024
	Maximum number of system snapshots	65,536
Surveillance Station	Maximum number of camera support channels (camera authorization required)	40 (including 2 sets of free licenses) (check compatible IP cameras)
	Frames per second (FPS) (H.264)	1200 FPS @ 720p (1280×720) 1050 FPS @ 1080p (1920×1080) 600 FPS @ 3M (2048×1536) 440 FPS @ 5M (2591×1944) 320 FPS @ 4K (3840×2160)
	Frames per second (FPS) (H.265)	1200 FPS @ 720p (1280×720) 1200 FPS @ 1080p (1920×1080) 1120 FPS @ 3M (2048×1536) 600 FPS @ 5M (2591×1944) 480 FPS @ 4K (3840×2160)
	Remarks	Surveillance Station uses an Axis camera during the test; the recording schedule is continuous recording; the Surveillance Station is used as the real-time image source; the motion detection source is set to the camera; the real-time image and the recording use the same set of image streams. The maximum number of supported channels covers devices installed on Virtual DSM. Other concurrently executed services may affect the frame per second (FPS), such as using Archive Vault to perform archiving tasks.
Synology Drive	Recommended number of files	1,000,000 (Applicable to files that are indexed or belong to Synology Drive . For files accessed through other protocols, please refer to the file service in the above field)
	Suggest the number of clients that can be synchronized at the same time	550 (The number of devices that can be connected at the same time when the recommended number of files to be stored is reached)
	Remarks	Exceeding the recommended quantity above will not cause the kit to stop functioning, but will only cause a longer response time. Using SSD caching can significantly improve performance. For models with expandable memory, the maximum capacity memory has been installed during testing. The Btrfs file system and unencrypted shared folders were used in the above test.
Synology Office	Maximum number of users	1,800
	Remarks	The test opens multiple files, and each file is edited by 30 users at the same time. For models with expandable memory, the maximum capacity memory has been installed during testing. Client performance may affect the maximum number of simultaneous editing users. Client test computer specifications: Intel Core i3-3220 / 8GB RAM
Video Station
Virtual Machine Manager	Recommended number of virtual machines	8 (see more)
	Recommended number of Virtual DSMs (authorization required)	8 (including 1 free license)
	Remarks	This specification varies depending on the system configuration and the amount of memory.
VPN Server	Maximum number of connections	30