Product comparison · 2 nas & storage servers

QNAP TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531 vs QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521

120specifications compared
37differ
83identical
30known for one product only

Key differences

The QNAP TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531 has 107,872 TB more total installed storage capacity than the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 (108000 TB vs 128 TB). The QNAP TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531 has 2 more storage drives installed than the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 (18 vs 16). The QNAP TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531 has 2 more storage drives supported than the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 (18 vs 16). Only the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 has hot-swap drive bays. Only the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 has USB port.

Total installed storage capacity
- TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531:108000 TB
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:128 TB
Number of storage drives installed
- TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531:18
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:16
Number of storage drives supported
- TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531:18
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:16
Storage drive capacity
- TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531:6 TB
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:8 TB
RAID levels
- TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531:0, 1, 5, 6, 10, 50, 60
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:0, 1, 5, 6, JBOD
Hot-swap drive bays
- TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531:No
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:Yes
Processor model
- TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531:D-1531
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:D-1521
Processor frequency
- TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531:2.2 GHz
- TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521:2.4 GHz

Side by side

Differences highlightedShow differences only

Comparison of TES-1885U-D1531-128GR, TS-1685-D1521-8G
150 specifications	A QNAP TES-1885U-D1531-128GR NAS Rack (2U) Intel® Xeon® D D-1531 Model TES-1885U-D1531-128GR View product	B QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 Model TS-1685-D1521-8G View product
Storage7 differ
Storage drives installed	Yes	Yes
Total installed storage capacityDiffers	108000 TB	128 TB
Number of storage drives installedDiffers	18	16
Number of storage drives supportedDiffers	18	16
Installed storage drive type	HDD	HDD
Supported storage drive types	HDD & SSD	HDD & SSD
Storage drive capacityDiffers	6 TB	8 TB
Supported storage drive interfacesKnown for one	Unknown — not stated by the source	M.2, Serial ATA III
Storage drive size	2.5/3.5"	2.5/3.5"
Storage drive sizes supportedKnown for one	Unknown — not stated by the source	2.5,3.5"
RAID support	Yes	Yes
RAID levelsDiffers	0, 1, 5, 6, 10, 50, 60	0, 1, 5, 6, JBOD
Hot-swap drive baysDiffers	No	Yes
Supported file systemsDiffers	FAT32, HFS+, NTFS, ZFS, ext3, ext4	FAT32, HFS+, NTFS, ext3, ext4
Storage drive interfaceKnown for one	Serial ATA III	Unknown — not stated by the source
Processor6 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Xeon® D	Intel® Xeon® D
Processor modelDiffers	D-1531	D-1521
Processor frequencyDiffers	2.2 GHz	2.4 GHz
Processor boost frequency	2.7 GHz	2.7 GHz
Processor coresDiffers	6	4
Processor threadsDiffers	12	8
Processor cacheDiffers	9 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 codeDiffers	SR2DG	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
Processor cache typeKnown for one	L3	Unknown — not stated by the source
Memory2 differ
Internal memoryDiffers	128 GB	8 GB
Internal memory type	DDR4	DDR4
Maximum RAM supported	128 GB	128 GB
Flash memoryDiffers	4000 MB	512 MB
Memory slotsKnown for one	4	Unknown — not stated by the source
Networkidentical
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000,10000 Mbit/s	10,100,1000,10000 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
Link aggregation	Yes	Yes
Supported network protocols	IPv4, IPv6, MB2/SMB3, NFS v3/NFS v4, FTP, FTPS, TFTP, HTTP, HTTPS, SSH, iSCSI, SNMP, SMTP, SMSC	IPv4, IPv6, MB2/SMB3, NFS v3/NFS v4, FTP, FTPS, TFTP, HTTP, HTTPS, SSH, iSCSI, SNMP, SMTP, SMSC
Ports & interfaces5 differ
Ethernet LAN (RJ-45) portsDiffers	4	6
USB portDiffers	No	Yes
USB 2.0 ports quantityDiffers	0	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	0	1
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantityKnown for one	Unknown — not stated by the source	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityKnown for one	Unknown — not stated by the source	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantityKnown for one	Unknown — not stated by the source	0
Fiber ports quantityDiffers	2	0
VGA (D-Sub) ports quantityKnown for one	Unknown — not stated by the source	0
eSATA ports quantityKnown for one	Unknown — not stated by the source	0
HDMI ports quantityKnown for one	Unknown — not stated by the source	0
Serial ports quantityKnown for one	Unknown — not stated by the source	0
RS-232 portsKnown for one	Unknown — not stated by the source	0
Thunderbolt 3 ports quantityKnown for one	Unknown — not stated by the source	0
Thunderbolt 2 ports quantityKnown for one	Unknown — not stated by the source	0
Thunderbolt ports quantityKnown for one	Unknown — not stated by the source	0
Fiber optic connectorKnown for one	SFP+	Unknown — not stated by the source
Design4 differ
Chassis typeDiffers	Rack (2U)	Tower
Cooling type	Active	Active
Product colour	Black	Black
Number of fansDiffers	4 fan(s)	5 fan(s)
Fan diameterDiffers	6 cm	9.2 cm
Fan diameter 2Known for one	Unknown — not stated by the source	9 cm
LED indicatorsDiffers	LAN, Status	Yes
Built-in displayKnown for one	Unknown — not stated by the source	Yes
Display typeKnown for one	Unknown — not stated by the source	LCD
Performance3 differ
Type	NAS	NAS
Device classDiffers	Large Enterprise Business	Home & Home Office
Backup function	Yes	Yes
Backup features	Cloud, iSCSI LUN	Cloud, iSCSI LUN
Multilingual support	Yes	Yes
Web-based management	Yes	Yes
Access Control List (ACL)	Yes	Yes
Browser supportedDiffers	Internet Explorer 10, Mozilla Firefox 8, Safari 4, Google Chrome	Internet Explorer 10, Firefox 8, Safari 4, Google Chrome
Built-in FTP server	Yes	Yes
Built-in iTunes server	Yes	Yes
Hot spare	Yes	Yes
On/off switch	Yes	Yes
Password authentication	Yes	Yes
Reset button	Yes	Yes
S.M.A.R.T. support	Yes	Yes
Security algorithmsDiffers	256-bit AES, FIPS 140-2, HTTPS, SNMP, SSH, SSL/TLS	256-bit AES, FIPS 140-2, SNMP, SNMPv3, SSH
Share folder	CIFS/SMB	CIFS/SMB
System log	Yes	Yes
Universal Plug and Play (UPnP)Known for one	Unknown — not stated by the source	Yes
Software4 differ
Operating system installedDiffers	QNAP Enterprise System	QNAP Turbo System
Operating system versionDiffers	1.1	4.3
Windows operating systems supportedDiffers	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	Windows 10, Windows 7, Windows 8
Linux operating systems supported	Yes	Yes
Mac operating systems supported	Yes	Yes
Server operating systems supportedDiffers	Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2	Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
Power2 differ
Power supply location	Built-in	Built-in
Power supply unit (PSU) capacityDiffers	450 W	250 W
Power consumption (typical)Known for one	Unknown — not stated by the source	127 W
Power consumption (sleep)Known for one	Unknown — not stated by the source	61.36 W
AC input voltageDiffers	90-264 V	100 - 240 V
AC input frequencyKnown for one	Unknown — not stated by the source	50 - 60 Hz
Fan voltageKnown for one	Unknown — not stated by the source	12 V
Number of power supply unitsKnown for one	2	Unknown — not stated by the source
Redundant power supply (RPS) supportKnown for one	Yes	Unknown — not stated by the source
Weight & dimensions3 differ
WidthDiffers	442.5 mm	369.9 mm
DepthDiffers	530.5 mm	319.8 mm
HeightDiffers	88 mm	303.8 mm
WeightKnown for one	15.1 kg	Unknown — not stated by the source
Package weightKnown for one	21.4 kg	Unknown — not stated by the source
Packaging contentidentical
Cables included	AC, LAN (RJ-45)	AC, LAN (RJ-45)
Quick installation guide	Yes	Yes
Rack mount kitKnown for one	Yes	Unknown — not stated by the source
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 features1 differ
Digital Living Network Alliance (DLNA) certified	Yes	Yes
Processor ARK IDDiffers	91203	91202

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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