Product comparison · 2 nas & storage servers

Buffalo LinkStation 420 6TB vs Buffalo LinkStation 421 + 2 x ST2000V

45specifications compared
12differ
33identical
19known for one product only

Key differences

Total installed storage capacity
- LinkStation 420 6TB:6 TB
- LinkStation 421 + 2 x ST2000V:4 TB
Storage drive capacity
- LinkStation 420 6TB:3 TB
- LinkStation 421 + 2 x ST2000V:2 TB
Storage drive interface
- LinkStation 420 6TB:Serial ATA
- LinkStation 421 + 2 x ST2000V:Serial ATA II
Maximum supported storage capacity
- LinkStation 420 6TB:8 TB
- LinkStation 421 + 2 x ST2000V:8000 TB
Processor family
- LinkStation 420 6TB:Marvell
- LinkStation 421 + 2 x ST2000V:ARM
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
- LinkStation 420 6TB:0
- LinkStation 421 + 2 x ST2000V:1
Product colour
- LinkStation 420 6TB:Black
- LinkStation 421 + 2 x ST2000V:Grey
Power consumption (typical)
- LinkStation 420 6TB:26 W
- LinkStation 421 + 2 x ST2000V:48 W

Side by side

Differences highlightedShow differences only

Comparison of LinkStation 420 6TB, LinkStation 421 + 2 x ST2000V
64 specifications	A Buffalo LinkStation 420 6TB View product	B Buffalo LinkStation 421 + 2 x ST2000V View product
Storage4 differ
Storage drives installed	Yes	Yes
Total installed storage capacityDiffers	6 TB	4 TB
Number of storage drives installed	2	2
Number of storage drives supported	2	2
Installed storage drive type	HDD	HDD
Supported storage drive types	HDD	HDD
Storage drive capacityDiffers	3 TB	2 TB
Storage drive interfaceDiffers	Serial ATA	Serial ATA II
Storage drive sizeKnown for one	Unknown — not stated by the source	3.5"
Maximum supported storage capacityDiffers	8 TB	8000 TB
RAID support	Yes	Yes
RAID levels	0, 1, JBOD	0, 1, JBOD
Hot-swap drive baysKnown for one	No	Unknown — not stated by the source
Processor1 differ
Processor familyDiffers	Marvell	ARM
Processor model	Armada 370	Armada 370
Processor frequency	1.2 GHz	1.2 GHz
Number of processors installedKnown for one	1	Unknown — not stated by the source
Memoryidentical
Internal memory	0.5 GB	0.5 GB
Internal memory type	DDR3	DDR3
Network1 differ
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
Wi-Fi	No	No
Supported network protocolsDiffers	TCP/IP, SMB/CIFS, FTP, HTTP/HTTPS, AFP	TCP/IP
BandwidthKnown for one	0.1 Gbit/s	Unknown — not stated by the source
Ports & interfaces1 differ
Ethernet LAN (RJ-45) ports	1	1
USB 2.0 ports quantity	1	1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	0	1
Fiber ports quantity	0	0
Design1 differ
Cooling type	Active	Active
Product colourDiffers	Black	Grey
LED indicators	Yes	Yes
Built-in displayKnown for one	Unknown — not stated by the source	No
Cable lock slotKnown for one	Unknown — not stated by the source	Yes
Performanceidentical
Type	NAS	NAS
Device classKnown for one	Unknown — not stated by the source	Home & Home Office
Backup function	Yes	Yes
Built-in optical driveKnown for one	Unknown — not stated by the source	No
Card reader integratedKnown for one	Unknown — not stated by the source	No
Management protocols	HTTP/HTTPS	HTTP/HTTPS
Web-based management	Yes	Yes
Built-in BitTorrent client	Yes	Yes
On/off switchKnown for one	Unknown — not stated by the source	Yes
Powerful backup NovaBACKUP Professional	Yes	Yes
Software2 differ
Windows operating systems supportedDiffers	Yes	Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Win
Mac operating systems supportedDiffers	Yes	Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Server operating systems supportedKnown for one	Unknown — not stated by the source	Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2
Bundled softwareKnown for one	TimeMachine	Unknown — not stated by the source
Power1 differ
Power supply locationKnown for one	Unknown — not stated by the source	External
Number of power supply units	1	1
Power consumption (typical)Differs	26 W	48 W
AC input voltage	100-240 V	100-240 V
AC input frequency	50 - 60 Hz	50 - 60 Hz
Power supply unit (PSU) capacityKnown for one	48 W	Unknown — not stated by the source
Redundant power supply (RPS) supportKnown for one	No	Unknown — not stated by the source
Weight & dimensions1 differ
Width	87 mm	87 mm
Depth	205 mm	205 mm
Height	128 mm	128 mm
WeightDiffers	2.4 kg	800 g
Packaging contentidentical
External power adapterKnown for one	Unknown — not stated by the source	Yes
Cables includedKnown for one	Unknown — not stated by the source	AC
Quick start guideKnown for one	Unknown — not stated by the source	Yes
Operational conditionsidentical
Operating temperature (T-T)	5 - 35 °C	5 - 35 °C
Operating relative humidity (H-H)	20 - 80%	20 - 80%
Other featuresidentical
Digital Living Network Alliance (DLNA) certifiedKnown 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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