Product comparison · 2 nas & storage servers

QNAP SS-839 Pro Turbo NAS 4TB vs Seagate BlackArmor NAS 440 8-TB Network Storage Server

10specifications compared
8differ
2identical
22known for one product only

Key differences

Total installed storage capacity
- SS-839 Pro Turbo NAS 4TB:4 TB
- BlackArmor NAS 440 8-TB Network Storage Server:8 TB
Number of storage drives installed
- SS-839 Pro Turbo NAS 4TB:8
- BlackArmor NAS 440 8-TB Network Storage Server:1
Storage drive capacity
- SS-839 Pro Turbo NAS 4TB:500 GB
- BlackArmor NAS 440 8-TB Network Storage Server:8 TB
RAID levels
- SS-839 Pro Turbo NAS 4TB:JBOD
- BlackArmor NAS 440 8-TB Network Storage Server:0, 1, 5, 10, JBOD
USB 2.0 ports quantity
- SS-839 Pro Turbo NAS 4TB:5
- BlackArmor NAS 440 8-TB Network Storage Server:4
Weight
- SS-839 Pro Turbo NAS 4TB:3.92 kg
- BlackArmor NAS 440 8-TB Network Storage Server:6.16 kg
Dimensions (WxDxH)
- SS-839 Pro Turbo NAS 4TB:177 x 180 x 235 mm
- BlackArmor NAS 440 8-TB Network Storage Server:207.00 x 269.00 x 160.00 mm

Side by side

Differences highlightedShow differences only

Comparison of SS-839 Pro Turbo NAS 4TB, BlackArmor NAS 440 8-TB Network Storage Server
32 specifications	A QNAP SS-839 Pro Turbo NAS 4TB View product	B Seagate BlackArmor NAS 440 8-TB Network Storage Server View product
Storage4 differ
Total installed storage capacityDiffers	4 TB	8 TB
Number of storage drives installedDiffers	8	1
Storage drive capacityDiffers	500 GB	8 TB
Storage drive sizeKnown for one	2.5"	Unknown — not stated by the source
RAID levelsDiffers	JBOD	0, 1, 5, 10, JBOD
HDD speedKnown for one	Unknown — not stated by the source	7200 RPM
Processoridentical
Processor frequencyKnown for one	1.6 GHz	Unknown — not stated by the source
Number of processors installedKnown for one	1	Unknown — not stated by the source
Memoryidentical
Internal memoryKnown for one	2 GB	Unknown — not stated by the source
Flash memoryKnown for one	128 MB	Unknown — not stated by the source
Networkidentical
DHCP clientKnown for one	Yes	Unknown — not stated by the source
Jumbo frames supportKnown for one	Yes	Unknown — not stated by the source
Supported network protocolsKnown for one	TCP/IP, DHCP Client, DHCP Server, CIFS/SMB, AFP, NFS, HTTP, HTTPS, FTP, DDNS, NTP	Unknown — not stated by the source
Ports & interfaces1 differ
USB 2.0 ports quantityDiffers	5	4
eSATAKnown for one	Yes	Unknown — not stated by the source
Designidentical
Chassis typeKnown for one	Tower	Unknown — not stated by the source
Display typeKnown for one	LCD	Unknown — not stated by the source
Performanceidentical
Access Control List (ACL)Known for one	Yes	Unknown — not stated by the source
Poweridentical
Power consumption (typical)Known for one	34 W	Unknown — not stated by the source
Weight & dimensions1 differ
WeightDiffers	3.92 kg	6.16 kg
Package weightKnown for one	Unknown — not stated by the source	7.54 kg
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 40 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	0 - 95%	Unknown — not stated by the source
Other features2 differ
Compatible operating systemsDiffers	Microsoft Windows 98/ ME/ NT/ 2000/ XP/ 2003/ Vista/ Windows 7 (32bit & 64bit), Mac OS X, Linux, Unix	Microsoft Windows XP, Vista Linux Kernel 2.6.7 + Mac OS X 10.4.11 +
Dimensions (WxDxH)Differs	177 x 180 x 235 mm	207.00 x 269.00 x 160.00 mm
Power requirementsKnown for one	100-240V AC, 50/60Hz	Unknown — not stated by the source
Minimum RAMKnown for one	Unknown — not stated by the source	256 MB
Minimum processorKnown for one	Unknown — not stated by the source	Pentium III, 500MHz
Package dimensions (WxDxH)Known for one	Unknown — not stated by the source	241.30 x 365.00 x 236.00 mm
Supported protocolsKnown for one	Unknown — not stated by the source	CIFS, NFS, HTTP, HTTPS, FTP, Bonjour, Microsoft RALLY

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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