Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Synology Network Video Recorder DVA3221 4bay desktop NVR Atom C3538 8GB DDR4 108TB RetailMPN DVA3221 CPU CPU Model Intel Atom C3538 CPU Architecture 64 bit CPU Frequency Quad Core 2. 1 GHz Hardware Encryption Engine (AES NI) Yes GPU GPU Model NVIDIA GeForce GTX 1650 Notes Display output is not supported. Storage Drive Bays 4 Maximum Drive Bays with Expansion Unit 14 (DX517 x 2) Compatible Drive Type 3. 5" SATA HDD 2. 5" SATA HDD 2. 5" SATA SSD Maximum Internal Raw Capacity 64 TB (16 TB drive x 4) (Capacity may vary by RAID types) Maximum
MPNDVA3221
CPU
CPU Model
Intel Atom C3538
CPU Architecture
64-bit
CPU Frequency
Quad Core 2.1 GHz
Hardware Encryption Engine (AES-NI)
Yes
GPU
GPU Model
NVIDIA GeForce GTX 1650
Notes
Display output is not supported.
Storage
Drive Bays
4
Maximum Drive Bays with Expansion Unit
14 (DX517 x 2)
Compatible Drive Type
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
Maximum Internal Raw Capacity
64 TB (16 TB drive x 4) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units
224 TB (16 TB drive x 14) (Capacity may vary by RAID types)
Maximum Single Volume Size
108 TB
Hot Swappable Drive
Yes
Notes
"Compatible drive type" indicates 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 108TB.
External Ports
RJ-45 1GbE LAN Port
4 (with Link Aggregation / Failover support)
USB 3.0 Port
3
eSATA Port
2
COM Port
1
Others
Wake on LAN / WAN
Yes
System Fan
120 mm x 120 mm x 1 pcs
Fan Speed Mode
Cool Mode
Quiet Mode
Full-Speed Mode
Power Recovery
Yes
Noise Level
28.3 dB(A)
Scheduled Power On / Off
Yes
Power Supply Unit / Adapter
250 W
AC Input Power Voltage
100 V to 240 V AC
Power Frequency
50/60 Hz, Single Phase
Power Consumption
43.92 W (Access)
28.43 W (HDD Hibernation)
British Thermal Unit
149.86 BTU/hr (Access)
97.01 BTU/hr (HDD Hibernation)
Notes
Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
Temperature
Operating Temperature
0oC to 40oC (32oF to 104oF)
Storage Temperature
-20oC to 60oC (-5oF to 140oF)
Relative Humidity
5% to 95% RH
Certification
FCC
CE
BSMI
EAC
VCCI
RCM
Environment
RoHS Compliant
Packaging Content
Main Unit X 1
Accessory Pack X 1
AC Power Cord X 1
RJ-45 LAN Cable X 2
Quick Installation Guide X 1
Optional Accessories
DDR4 ECC SODIMM: D4ECSO-2666-16G
Expansion Units: DX517
3.5" SATA HDD: HAT5300
2.5" SATA SSD: SAT5200
VisualStation: VS960HD/VS360HD
Surveillance Device License Pack
Notes
The original non-ECC memory modules must be removed before the optional ECC memory modules can be installed.
Surveillance Station
Video Analysis
Deep Video Analytics Feature
People and vehicle detection
People counting
Face recognition
Intrusion detection
Maximum Number of Deep Video Analytics Tasks
6
Maximum Number of Registrations Supported by Face Database
10,000
General Specifications
Maximum IP cam
32 (including 8 Free License)
Total FPS (H.264)
960 FPS at 720p (1280x720), 32 Channels
448 FPS at 1080p (1920x1080), 32 Channels
280 FPS at 3M (2048x1536), 28 Channels
190 FPS at 5M (2591x1944), 19 Channels
130 FPS at 4K (3840x2160), 13 Channels
Total FPS (H.265)
960 FPS at 720p (1280x720), 32 Channels
960 FPS at 1080p (1920x1080), 32 Channels
320 FPS at 3M (2048x1536), 32 Channels
200 FPS at 5M (2591x1944), 20 Channels
150 FPS at 4K (3840x2160), 15 Channels
Video Codec
H.264
H.264+
H.265
H.265+
MJPEG
MPEG-4
MxPEG (not supported by Deep Video Analytics tasks)
Audio Codec
AAC
AMR
G711
G726
PCM
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.
Total FPS may be affected by other services running at the same time (e.g., archive tasks performed by Archive Vault).
The maximum channel number also includes devices installed on Virtual DSM.
System Services
File System
Internal Drives
Btrfs
EXT4
Storage Management
Maximum Internal Volume Number
64
Supported RAID Type
Synology Hybrid RAID
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
Synology Hybrid RAID
RAID 10
RAID 1
RAID 5
RAID 6
Volume Expansion by Adding a HDD
Synology Hybrid RAID
JBOD
RAID 5
RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
Synology Hybrid RAID
RAID 1
RAID 5
RAID 6
RAID 10
File Services
File Protocol
CIFS/AFP/NFS/FTP/WebDAV
Account and Shared Folder
Maximum Local User Accounts
2,048
Maximum Local Groups
256
Maximum Shared Folder
512
General Specifications
Networking Protocols
SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
Google Chrome
Firefox
Supported Language
English, Deutsch, Franais, Italiano, Espaol, Dansk, Norsk, Svenska, Nederlands, , Polski, Magyar, Portugus do Brasil, Portugus Europeu, Trke, esk, , , , ,
VPN Server
Maximum Connections
30
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 2187 reviews
Sort
Product Reviews
★★★★★ 1
Misleading description
Style: Magnetic Mount
Misleading. It does affect the vent. You cannot turn the vent at all and it cannot be closed 100%. About 95% closed. Seems very well built and sturdy however, I wish I knew that you cannot turn the vent… Not sure how I feel about that, I may return it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 4
Happy after aggravating install!
Style: Magnetic Mount, Style: Magnetic Mount
Works now that I finally got it to hold. Otherwise would have given it 5 stars. The air vent ‘lip’ on my 2018 Tacoma is so short so not much for this to clamp on to. This was hard to install. Instructions didn’t have anything about putting the parts together and extra cushion pieces. I watched the video and it was like mine once I got it to hold. I tried with one layer then added a layer then removed added layer and then finally got it to hold! Maybe 10 tries! Now that it’s holding it’s perfect! I left it unscrewed just a little tiny bit so can move the phone view around a little. Happy now!
Build quality:
It seems to be pretty strong and will last my truck’s lifetime.
Phone mount:
Like that it is strong magnet holder and not bulky
Ease of installation:
Not easy. Kept not staying attached then finally just got it. I don’t know magic trick but was just about to give up then it caught the small lip and held tight. Ever other attempt kept popping off as I tightened it down.
Value for money:
I think at $39.99 was a little high but hopefully last one I ever buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 12, 2025
★★★★★ 5
Solid iPhone Holder
Style: Magnetic Mount
I’ve been searching for a phone holder that doesn’t take up one of the drink holders and actually works well. I had been eyeing a vent mounted holder but was hesitant until I found this one. It had good reviews and was designed to work with my Tacoma. I decided to try it and was pleasantly surprised. It was easy to assemble, fit perfectly, secured nicely, and held my phone in place even in bumpy conditions. The vent location puts it in a good alignment with my vision which is especially helpful when I’m using my navigation app. If you’ve been looking for a decent, reasonably priced, well-built iPhone holder, this is an excellent choice!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 9, 2025
★★★★★ 5
Great Net!!
Size: 59 inches
The cargo net itself works great and keeps everything secure in my truck bed. The sticker tabs didn’t hold up well, so I switched to using the screws provided. The screws do the job perfectly, but installing them just feels wrong lol. Should be drilling holes in a brand new truck.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 24, 2025
★★★★★ 5
Great trunk bed cargo net holds a ton in place
Size: 59 inches, Size: 59 inches
Just what I was looking for. Easy to install and very easy to reposition in your truck bed. Great purchase would recommend holds all my groceries and anything else I put in well constructed strong.
This is great cause your items won’t slide all over the truck bed when you’re driving, it holds a bunch of bags or boxes.
It’s so strong my husband put sandbags inside the compartments and still great. I do highly recommend this net organizer it will also work on the back of an SUV.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 20, 2022