Product comparison · 2 nas & storage servers

QNAP TS-1685-D1521-32G 24TB (12 x 2TB WD RED HDD) vs QNAP TS-1685-D1521-32G 36TB (12 x 3TB Seagate IronWolf HDD)

138specifications compared
2differ
136identical
0known for one product only

Key differences

The QNAP TS-1685-D1521-32G 36TB (12 x 3TB Seagate IronWolf HDD) has 12 TB more total installed storage capacity than the QNAP TS-1685-D1521-32G 24TB (12 x 2TB WD RED HDD) (36 TB vs 24 TB). The QNAP TS-1685-D1521-32G 36TB (12 x 3TB Seagate IronWolf HDD) has 1 TB more storage drive capacity than the QNAP TS-1685-D1521-32G 24TB (12 x 2TB WD RED HDD) (3 TB vs 2 TB).

Total installed storage capacity
- TS-1685-D1521-32G 24TB (12 x 2TB WD RED HDD):24 TB
- TS-1685-D1521-32G 36TB (12 x 3TB Seagate IronWolf HDD):36 TB
Storage drive capacity
- TS-1685-D1521-32G 24TB (12 x 2TB WD RED HDD):2 TB
- TS-1685-D1521-32G 36TB (12 x 3TB Seagate IronWolf HDD):3 TB

Side by side

Differences highlightedShow differences only

Comparison of TS-1685-D1521-32G 24TB (12 x 2TB WD RED HDD), TS-1685-D1521-32G 36TB (12 x 3TB Seagate IronWolf HDD)
138 specifications	A QNAP TS-1685-D1521-32G 24TB (12 x 2TB WD RED HDD)View product	B QNAP TS-1685-D1521-32G 36TB (12 x 3TB Seagate IronWolf HDD)View product
Storage2 differ
Storage drives installed	Yes	Yes
Total installed storage capacityDiffers	24 TB	36 TB
Number of storage drives installed	12	12
Number of storage drives supported	22	22
Installed storage drive type	HDD	HDD
Supported storage drive types	HDD & SSD	HDD & SSD
Storage drive capacityDiffers	2 TB	3 TB
Storage drive interface	M.2, Serial ATA III	M.2, Serial ATA III
Storage drive size	2.5/3.5"	2.5/3.5"
RAID support	Yes	Yes
RAID levels	0, 1, 5, 6, 10, JBOD	0, 1, 5, 6, 10, JBOD
Supported file systems	FAT32, HFS+, NTFS, ext3, ext4	FAT32, HFS+, NTFS, ext3, ext4
Processoridentical
Processor manufacturer	Intel	Intel
Processor family	Intel® Xeon® D	Intel® Xeon® D
Processor model	D-1521	D-1521
Processor frequency	2.4 GHz	2.4 GHz
Processor boost frequency	2.7 GHz	2.7 GHz
Processor cores	4	4
Processor threads	8	8
Processor cache	6 MB	6 MB
CPU configuration (max)	1	1
ECC supported by processor	Yes	Yes
PCI Express configurations	1x16, 1x4, 1x8	1x16, 1x4, 1x8
PCI Express slots version	2.0, 3.0	2.0, 3.0
Processor cache type	Smart Cache	Smart Cache
Processor code	SR2DF	SR2DF
Processor codename	Broadwell	Broadwell
Processor lithography	14 nm	14 nm
Processor operating modes	64-bit	64-bit
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Processor series	Intel Xeon D-1500	Intel Xeon D-1500
Processor socket	BGA 1667	BGA 1667
Scalability	1S	1S
Stepping	V2	V2
Thermal Design Power (TDP)	45 W	45 W
Maximum internal memory supported by processor	128 GB	128 GB
Conflict-Free processor	Yes	Yes
Memoryidentical
Internal memory	32 GB	32 GB
Internal memory type	DDR4	DDR4
Maximum RAM supported	128 GB	128 GB
Memory form factor	DIMM	DIMM
Memory slots	4	4
Flash memory	512 MB	512 MB
Networkidentical
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000,10000 Mbit/s	10,100,1000,10000 Mbit/s
Ethernet LAN data rate supported (max)	10000 Mbit/s	10000 Mbit/s
Wi-Fi	No	No
DHCP client	Yes	Yes
DHCP server	Yes	Yes
Jumbo frames support	Yes	Yes
iSCSI support	Yes	Yes
Wake-on-LAN ready	Yes	Yes
Supported network protocols	TCP/IP, IPv4 & IPv6	TCP/IP, IPv4 & IPv6
Ports & interfacesidentical
Ethernet LAN (RJ-45) ports	6	6
USB 2.0 ports quantity	0	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	3	3
Fiber ports quantity	0	0
Designidentical
Chassis type	Desktop	Desktop
Cooling type	Active	Active
Product colour	Black	Black
Number of fans	5 fan(s)	5 fan(s)
LED indicators	Status	Status
Built-in display	Yes	Yes
Display type	LCD	LCD
Performanceidentical
Type	NAS	NAS
Device class	Small & Medium Business	Small & Medium Business
Backup function	Yes	Yes
Backup features	Cloud, iSCSI LUN	Cloud, iSCSI LUN
Multilingual support	Yes	Yes
Noise level	22.5 dB	22.5 dB
Share folder access right management	Yes	Yes
Web-based management	Yes	Yes
Access Control List (ACL)	Yes	Yes
Browser supported	Microsoft Internet Explorer 10+, Google Chrome, Apple Safari 7+, Mozilla Firefox	Microsoft Internet Explorer 10+, Google Chrome, Apple Safari 7+, Mozilla Firefox
Built-in FTP server	Yes	Yes
Built-in UPnP AV media server	Yes	Yes
Built-in iTunes server	Yes	Yes
Disk scan	Yes	Yes
Hot spare	Yes	Yes
On/off switch	Yes	Yes
Password authentication	Yes	Yes
Remotely operated	Yes	Yes
Reset button	Yes	Yes
S.M.A.R.T. support	Yes	Yes
Security algorithms	256-bit AES, HTTPS, SSH	256-bit AES, HTTPS, SSH
Share folder	CIFS/SMB	CIFS/SMB
System log	Yes	Yes
Softwareidentical
Operating system installed	QNAP Turbo System	QNAP Turbo System
Operating system version	4.3	4.3
Windows operating systems supported	Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, 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 H	Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, 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 H
Linux operating systems supported	Yes	Yes
Mac compatibility	Yes	Yes
Mac operating systems supported	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 10.12 Sierra, 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 Ma	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 10.12 Sierra, 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 Ma
Server operating systems supported	Windows Server 2012, Windows Server 2012 R2, Windows Server 2012 R2 x64, Windows Server 2012 x64	Windows Server 2012, Windows Server 2012 R2, Windows Server 2012 R2 x64, Windows Server 2012 x64
Poweridentical
Power supply location	Built-in	Built-in
Power supply unit (PSU) capacity	250 W	250 W
Power consumption (typical)	127 W	127 W
Power consumption (sleep)	61.36 W	61.36 W
AC input voltage	100-240 V	100-240 V
AC input frequency	50 - 60 Hz	50 - 60 Hz
Fan voltage	12 V	12 V
Output current	3 A	3 A
Weight & dimensionsidentical
Width	369.9 mm	369.9 mm
Depth	319.8 mm	319.8 mm
Height	303.8 mm	303.8 mm
Packaging contentidentical
Cables included	AC, LAN (RJ-45)	AC, LAN (RJ-45)
Quick installation guide	Yes	Yes
Number of screws	16	16
Processor special featuresidentical
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel Secure Key Technology version	1.00	1.00
Intel TSX-NI	Yes	Yes
Intel TSX-NI version	1.00	1.00
Intel Trusted Execution Technology	Yes	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® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® OS Guard	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® Turbo Boost Technology	2.0	2.0
Maximum number of PCI Express lanes	32	32
Thermal Monitoring Technologies	Yes	Yes
UART	Yes	Yes
Memory channels supported by processor	Dual	Dual
Memory types supported by processor	DDR3-SDRAM, DDR4-SDRAM	DDR3-SDRAM, DDR4-SDRAM
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Operating relative humidity (H-H)	5 - 95%	5 - 95%
Other featuresidentical
Digital Living Network Alliance (DLNA) certified	Yes	Yes
Power management	Yes	Yes
Processor ARK ID	91202	91202
Expansion slots	1: PCIe Gen.3 x8 2: PCIe Gen.2 x4 3: PCIe Gen.3 x8	1: PCIe Gen.3 x8 2: PCIe Gen.2 x4 3: PCIe Gen.3 x8
I/O ports	1 x 3.5 mm	1 x 3.5 mm

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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