Product comparison · 2 nas & storage servers

QNAP HS-251+ NAS/storage server Compact Intel® Celeron® vs QNAP IS-453S NAS Desktop Intel Atom®

53specifications compared
16differ
37identical
30known for one product only

Key differences

Number of storage drives supported
- HS-251+ NAS/storage server Compact Intel® Celeron®:2
- IS-453S NAS Desktop Intel Atom®:4
Processor family
- HS-251+ NAS/storage server Compact Intel® Celeron®:Intel® Celeron®
- IS-453S NAS Desktop Intel Atom®:Intel Atom®
Processor frequency
- HS-251+ NAS/storage server Compact Intel® Celeron®:2 GHz
- IS-453S NAS Desktop Intel Atom®:1.91 GHz
Chassis type
- HS-251+ NAS/storage server Compact Intel® Celeron®:Compact
- IS-453S NAS Desktop Intel Atom®:Desktop
LED indicators
- HS-251+ NAS/storage server Compact Intel® Celeron®:LAN, Status
- IS-453S NAS Desktop Intel Atom®:HDD, LAN, Status, USB
Power supply unit (PSU) capacity
- HS-251+ NAS/storage server Compact Intel® Celeron®:60 W
- IS-453S NAS Desktop Intel Atom®:90 W
Power consumption (sleep)
- HS-251+ NAS/storage server Compact Intel® Celeron®:0.6 W
- IS-453S NAS Desktop Intel Atom®:0.82 W
Width
- HS-251+ NAS/storage server Compact Intel® Celeron®:302 mm
- IS-453S NAS Desktop Intel Atom®:180 mm

Side by side

Differences highlightedShow differences only

Comparison of HS-251+, IS-453S
83 specifications	A QNAP HS-251+ NAS/storage server Compact Intel® Celeron® Model HS-251+ View product	B QNAP IS-453S NAS Desktop Intel Atom® Model IS-453S View product
Storage2 differ
Number of storage drives supportedDiffers	2	4
Storage drive interfaceDiffers	Serial ATA, Serial ATA II, Serial ATA III	Serial ATA
RAID supportKnown for one	Unknown — not stated by the source	Yes
RAID levelsKnown for one	Unknown — not stated by the source	0, 1, 5+HS, 5, 6, 10
Total installed storage capacityKnown for one	0 TB	Unknown — not stated by the source
Maximum supported storage capacityKnown for one	12 TB	Unknown — not stated by the source
Hot-swap drive baysKnown for one	Yes	Unknown — not stated by the source
Supported file systemsKnown for one	FAT32, HFS+, NTFS, ext3, ext4	Unknown — not stated by the source
Processor2 differ
Processor familyDiffers	Intel® Celeron®	Intel Atom®
Processor frequencyDiffers	2 GHz	1.91 GHz
Memoryidentical
Memory clock speedKnown for one	Unknown — not stated by the source	1333 MHz
Memory slotsKnown for one	Unknown — not stated by the source	2
Networkidentical
iSCSI supportKnown for one	Yes	Unknown — not stated by the source
Wake-on-LAN readyKnown for one	Yes	Unknown — not stated by the source
Design2 differ
Chassis typeDiffers	Compact	Desktop
LED indicatorsDiffers	LAN, Status	HDD, LAN, Status, USB
Performanceidentical
Backup functionKnown for one	Unknown — not stated by the source	Yes
Backup featuresKnown for one	Unknown — not stated by the source	iSCSI LUN
Management protocolsKnown for one	Unknown — not stated by the source	CIFS, AFP, FTP, WebDAV
Share folder access right managementKnown for one	Unknown — not stated by the source	Yes
Web-based managementKnown for one	Unknown — not stated by the source	Yes
Access Control List (ACL)Known for one	Unknown — not stated by the source	Yes
Browser supportedKnown for one	Unknown — not stated by the source	Microsoft Internet Explorer 10+, Mozilla Firefox 8+, Apple Safari 4+, Google Chrome
Built-in UPnP AV media serverKnown for one	Unknown — not stated by the source	Yes
Hot spareKnown for one	Unknown — not stated by the source	Yes
Password authenticationKnown for one	Unknown — not stated by the source	Yes
S.M.A.R.T. supportKnown for one	Unknown — not stated by the source	Yes
Security algorithmsKnown for one	Unknown — not stated by the source	256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
Device classKnown for one	Home & Home Office	Unknown — not stated by the source
Software2 differ
Operating system installedKnown for one	Unknown — not stated by the source	QNAP Turbo System
Mac operating systems supportedDiffers	Mac OS X 10.0 Cheetah, Mac OS X 10.1 Puma, Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.2 Jaguar, Mac OS X 10.3 Panther, 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 10.9 Mavericks	Yes
Server operating systems supportedDiffers	Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2	Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 x64, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2012 R2 x64
Power2 differ
Power supply unit (PSU) capacityDiffers	60 W	90 W
Number of power supply unitsKnown for one	Unknown — not stated by the source	1
Power consumption (typical)Known for one	Unknown — not stated by the source	10.04 W
Power consumption (sleep)Differs	0.6 W	0.82 W
Fan voltageKnown for one	Unknown — not stated by the source	12 V
Weight & dimensions4 differ
WidthDiffers	302 mm	180 mm
DepthDiffers	220 mm	247 mm
HeightDiffers	41.3 mm	59 mm
WeightDiffers	1.56 kg	1.11 kg
Package weightKnown for one	2.62 kg	Unknown — not stated by the source
Packaging content1 differ
Number of screwsDiffers	14	12
Package typeKnown for one	Box	Unknown — not stated by the source
Operational conditions1 differ
Operating temperature (T-T)Differs	0 - 40 °C	-40 - 50 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%

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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