Product comparison · 2 network surveillance servers

Buffalo LinkStation 420 NVR 2TB vs Dahua Technology DSS4004-S2 network surveillance server Rack Gigabit Ethernet

16specifications compared
14differ
2identical
21known for one product only

Key differences

The Dahua Technology DSS4004-S2 network surveillance server Rack Gigabit Ethernet has 2 more processor cores than the Buffalo LinkStation 420 NVR 2TB (4 vs 2). The Dahua Technology DSS4004-S2 network surveillance server Rack Gigabit Ethernet has 7.5 GB more internal memory than the Buffalo LinkStation 420 NVR 2TB (8 GB vs 0.5 GB). The Dahua Technology DSS4004-S2 network surveillance server Rack Gigabit Ethernet has 1 more HDDs supported than the Buffalo LinkStation 420 NVR 2TB (3 vs 2). Only the Dahua Technology DSS4004-S2 network surveillance server Rack Gigabit Ethernet has hot-swap drive bays. AC input voltage: 100-240 V on the Buffalo LinkStation 420 NVR 2TB, 100 - 240 V on the Dahua Technology DSS4004-S2 network surveillance server Rack Gigabit Ethernet.

Processor cores
- LinkStation 420 NVR 2TB:2
- DSS4004-S2 network surveillance server Rack Gigabit Ethernet:4
Internal memory
- LinkStation 420 NVR 2TB:0.5 GB
- DSS4004-S2 network surveillance server Rack Gigabit Ethernet:8 GB
Number of HDDs supported
- LinkStation 420 NVR 2TB:2
- DSS4004-S2 network surveillance server Rack Gigabit Ethernet:3
Hot-swap drive bays
- LinkStation 420 NVR 2TB:No
- DSS4004-S2 network surveillance server Rack Gigabit Ethernet:Yes
Ethernet LAN (RJ-45) ports
- LinkStation 420 NVR 2TB:1
- DSS4004-S2 network surveillance server Rack Gigabit Ethernet:4
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
- LinkStation 420 NVR 2TB:0
- DSS4004-S2 network surveillance server Rack Gigabit Ethernet:4
AC input voltage
- LinkStation 420 NVR 2TB:100-240 V
- DSS4004-S2 network surveillance server Rack Gigabit Ethernet:100 - 240 V
AC input frequency
- LinkStation 420 NVR 2TB:50 - 60 Hz
- DSS4004-S2 network surveillance server Rack Gigabit Ethernet:47 - 63 Hz

Side by side

Differences highlightedShow differences only

Comparison of LinkStation 420 NVR 2TB, DSS4004-S2
37 specifications	A Buffalo LinkStation 420 NVR 2TB View product	B Dahua Technology DSS4004-S2 network surveillance server Rack Gigabit Ethernet Model DSS4004-S2 View product
Processor1 differ
Processor familyKnown for one	Marvell ARMADA 370	Unknown — not stated by the source
Processor modelKnown for one	370	Unknown — not stated by the source
Processor frequencyKnown for one	1.2 GHz	Unknown — not stated by the source
Processor coresDiffers	2	4
Memory1 differ
Internal memoryDiffers	0.5 GB	8 GB
Internal memory typeKnown for one	DDR3	Unknown — not stated by the source
Storage2 differ
Number of HDDs supportedDiffers	2	3
HDD interfaceKnown for one	Serial ATA II	Unknown — not stated by the source
Maximum storage capacityKnown for one	4 TB	Unknown — not stated by the source
Hot-swap drive baysDiffers	No	Yes
RAID supportKnown for one	Yes	Unknown — not stated by the source
RAID levelsKnown for one	1, JBOD	Unknown — not stated by the source
HDD sizeKnown for one	Unknown — not stated by the source	2.5"
HDD capacityKnown for one	Unknown — not stated by the source	1 TB
Ports & interfaces2 differ
Ethernet LAN (RJ-45) portsDiffers	1	4
Ethernet interface type	Gigabit Ethernet	Gigabit Ethernet
USB 2.0 ports quantity	1	1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	0	4
HDMI ports quantityKnown for one	Unknown — not stated by the source	2
VGA (D-Sub) output portsKnown for one	Unknown — not stated by the source	1
Featuresidentical
Cable lock slotKnown for one	Yes	Unknown — not stated by the source
Operating system installedKnown for one	Linux Embedded	Unknown — not stated by the source
Designidentical
Built-in displayKnown for one	No	Unknown — not stated by the source
LED indicatorsKnown for one	Yes	Unknown — not stated by the source
On/off switchKnown for one	Yes	Unknown — not stated by the source
Chassis typeKnown for one	Unknown — not stated by the source	Rack
Rack capacityKnown for one	Unknown — not stated by the source	1U
Power2 differ
Power consumption (typical)Known for one	25 W	Unknown — not stated by the source
AC input voltageDiffers	100-240 V	100 - 240 V
AC input frequencyDiffers	50 - 60 Hz	47 - 63 Hz
Weight & dimensions4 differ
WidthDiffers	87 mm	440 mm
DepthDiffers	205 mm	398.6 mm
HeightDiffers	128 mm	43.6 mm
WeightDiffers	2.4 kg	6 kg
Operational conditions2 differ
Operating temperature (T-T)Differs	5 - 35 °C	0 - 45 °C
Operating relative humidity (H-H)Differs	20 - 80%	5 - 90%
Packaging contentidentical
Quick installation guideKnown for one	Yes	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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