The QNAP TS-251B-2G NAS Tower Intel® Celeron® J3355 has 11,904 TB more total installed storage capacity than the QNAP TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount (12000 TB vs 96 TB). The QNAP TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount has 10 more storage drives installed than the QNAP TS-251B-2G NAS Tower Intel® Celeron® J3355 (12 vs 2). The QNAP TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount has 10 more storage drives supported than the QNAP TS-251B-2G NAS Tower Intel® Celeron® J3355 (12 vs 2). Only the QNAP TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount has built-in display. Only the QNAP TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount has Intel Stable Image Platform Program (SIPP).
Total installed storage capacity
TS-251B-2G NAS Tower Intel® Celeron® J3355:12000 TB
TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount:96 TB
Number of storage drives installed
TS-251B-2G NAS Tower Intel® Celeron® J3355:2
TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount:12
Number of storage drives supported
TS-251B-2G NAS Tower Intel® Celeron® J3355:2
TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount:12
Storage drive capacity
TS-251B-2G NAS Tower Intel® Celeron® J3355:6 TB
TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount:8 TB
Supported storage drive interfaces
TS-251B-2G NAS Tower Intel® Celeron® J3355:Serial ATA III
TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount:M.2, Serial ATA III
RAID levels
TS-251B-2G NAS Tower Intel® Celeron® J3355:0, 1, JBOD
TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount:0, 1, 5, 6, JBOD
Processor family
TS-251B-2G NAS Tower Intel® Celeron® J3355:Intel® Celeron®
TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount:Intel® Core™ i5
Processor model
TS-251B-2G NAS Tower Intel® Celeron® J3355:J3355
TVS-1282-I5-16G-450W 96TB 12x8TB Seagate IronWolf Pro 12 Bay NAS Rackmount:i5-6500
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers
2
5
Fiber ports quantity
0
0
HDMI ports quantityDiffers
1
3
3.5 mm (1/8-inch) outKnown for one
Yes
—Unknown — not stated by the source
Microphone inKnown for one
Yes
—Unknown — not stated by the source
Graphics2 differ
On-board graphics card base frequencyDiffers
250 MHz
350 MHz
On-board graphics card burst frequencyKnown for one
700 MHz
—Unknown — not stated by the source
Maximum on-board graphics card memoryDiffers
8 GB
1.74 GB
Number of displays supported (on-board graphics)
3
3
On-board graphics card DirectX versionKnown for one
—Unknown — not stated by the source
12.0
On-board graphics card IDKnown for one
—Unknown — not stated by the source
1912
On-board graphics card OpenGL versionKnown for one
—Unknown — not stated by the source
4.4
On-board graphics card dynamic frequency (max)Known for one
—Unknown — not stated by the source
1050 MHz
Design5 differ
Chassis type
Tower
Tower
Cooling type
Active
Active
Product colourDiffers
White
Black
Number of fansDiffers
1 fan(s)
3 fan(s)
Fan diameterDiffers
7 cm
8 cm
LED indicatorsDiffers
HDD, LAN, Power, Status, USB
HDD, SSD, Status
Built-in displayDiffers
No
Yes
Cable lock slotKnown for one
Yes
—Unknown — not stated by the source
Cable lock slot typeKnown for one
Kensington
—Unknown — not stated by the source
Built-in speaker(s)Known for one
Yes
—Unknown — not stated by the source
Number of built-in speakersKnown for one
1
—Unknown — not stated by the source
Display typeKnown for one
—Unknown — not stated by the source
LCD
Performance4 differ
Type
NAS
NAS
Device classDiffers
Home & Home Office
Small & Medium Business
Backup function
Yes
Yes
Backup featuresDiffers
USB drive
Cloud, iSCSI LUN
Buzzer
Yes
Yes
Multilingual support
Yes
Yes
Noise levelDiffers
17.3 dB
21.6 dB
Management protocolsKnown for one
SNMP
—Unknown — not stated by the source
Share folder access right management
Yes
Yes
Access Control List (ACL)
Yes
Yes
Browser supportedDiffers
Apple Safari 7 or later, Google Chrome, Microsoft Internet Explorer 10 or later, Mozilla Firefox
Microsoft Internet Explorer 10+, Mozilla Firefox 8+, Apple Safari 4+, Google Chrome
Built-in BitTorrent clientKnown for one
Yes
—Unknown — not stated by the source
Built-in FTP server
Yes
Yes
Built-in iTunes server
Yes
Yes
Hot spare
Yes
Yes
On/off switch
Yes
Yes
Reset button
Yes
Yes
Security algorithms
256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
Share folder
CIFS/SMB
CIFS/SMB
System log
Yes
Yes
Universal Plug and Play (UPnP)Known for one
Yes
—Unknown — not stated by the source
Web-based managementKnown for one
—Unknown — not stated by the source
Yes
Built-in UPnP AV media serverKnown 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
Software5 differ
Operating system installedDiffers
QNAP Turbo System
QNAP Turbo NAS System
Operating system versionDiffers
4.3.4
4.2
Windows operating systems supportedDiffers
Windows 10, Windows 7, Windows 8
Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 Pro, Windows 10 Pro x64, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows
Linux operating systems supported
Yes
Yes
Mac operating systems supportedDiffers
Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
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 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Server operating systems supportedDiffers
Windows Server 2003, Windows Server 2003 x64, Windows Server 2008 R2, Windows Server 2008 R2 x64, Windows Server 2012, Windows Server 2012 R2, Windows Server 2012 R2 x64, Windows Server 2012 x64, Windows Server 2016, Windows Server 2016 x64
Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2
Power2 differ
Power supply locationDiffers
External
Built-in
Power supply unit (PSU) capacityDiffers
65 W
450 W
Power consumption (typical)Known for one
15.25 W
—Unknown — not stated by the source
Power consumption (HDD standby)Known for one
8.08 W
—Unknown — not stated by the source
AC input voltage
100 - 240 V
100 - 240 V
AC input frequencyKnown for one
—Unknown — not stated by the source
50 - 60 Hz
Weight & dimensions3 differ
WidthDiffers
105 mm
369.9 mm
DepthDiffers
226 mm
319.8 mm
HeightDiffers
168 mm
234.6 mm
WeightKnown for one
1.53 kg
—Unknown — not stated by the source
Packaging contentidentical
External power adapterKnown for one
Yes
—Unknown — not stated by the source
Cables included
AC, LAN (RJ-45)
AC, LAN (RJ-45)
Quick installation guide
Yes
Yes
Number of screwsKnown for one
—Unknown — not stated by the source
28
Processor special features11 differ
Embedded options available
Yes
Yes
Enhanced Intel SpeedStep Technology
Yes
Yes
Execute Disable Bit
Yes
Yes
Idle States
Yes
Yes
Intel 64
Yes
Yes
Intel Clear Video Technology
Yes
Yes
Intel Enhanced Halt State
Yes
Yes
Intel Identity Protection Technology version
1.00
1.00
Intel Rapid Storage TechnologyKnown for one
No
—Unknown — not stated by the source
Intel Secure BootKnown for one
Yes
—Unknown — not stated by the source
Intel Secure Boot Technology versionKnown for one
1.00
—Unknown — not stated by the source
Intel Secure Key Technology version
1.00
1.00
Intel Small Business Advantage (SBA) versionDiffers
0.00
1.00
Intel Smart Connect TechnologyKnown for one
No
—Unknown — not stated by the source
Intel Smart Connect Technology versionKnown for one
0.00
—Unknown — not stated by the source
Intel Smart Response Technology versionKnown for one
0.00
—Unknown — not stated by the source
Intel Stable Image Platform Program (SIPP)Differs
No
Yes
Intel Stable Image Platform Program (SIPP) versionDiffers
0.00
1.00
Intel Trusted Execution TechnologyDiffers
No
Yes
Intel VT-x with Extended Page Tables (EPT)
Yes
Yes
Intel Virtualization Technology (VT-x)
Yes
Yes
Intel Virtualization Technology for Directed I/O (VT-d)
Yes
Yes
Intel® AES New Instructions (Intel® AES-NI)
Yes
Yes
Intel® Anti-Theft Technology (Intel® AT)Known for one
No
—Unknown — not stated by the source
Intel® Clear Video HD Technology (Intel® CVT HD)
Yes
Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)
Yes
Yes
Intel® High Definition Audio (Intel® HD Audio)Known for one
