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Product comparison · 2 nas & storage servers

QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531 vs QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521

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  • 130specifications compared
  • 21differ
  • 109identical
  • 29known for one product only

Key differences

The QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 has 0.2 GHz more processor frequency than the QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531 (2.4 GHz vs 2.2 GHz). The QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531 has 2 more processor cores than the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 (6 vs 4). The QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531 has 4 more processor threads than the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521 (12 vs 8). RAID levels: 0, 1, 5, 6, 10, 50, 60, JBOD on the QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531, 0, 1, 5, 6, JBOD on the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521. Processor model: D-1531 on the QNAP TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531, D-1521 on the QNAP TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521.

  • RAID levels
    • 0, 1, 5, 6, 10, 50, 60, JBOD
    • 0, 1, 5, 6, JBOD
  • Processor model
    • D-1531
    • D-1521
  • Processor frequency
    • 2.2 GHz
    • 2.4 GHz
  • Processor cores
    • 6
    • 4
  • Processor threads
    • 12
    • 8
  • Processor cache
    • 9 MB
    • 6 MB
  • Processor code
    • SR2DG
    • SR2DF
  • Internal memory
    • 16 GB
    • 8 GB

Side by side

Differences highlightedShow differences only
159 specifications
A

QNAP

TS-1685-D1521-16G-550W NAS Desktop Intel® Xeon® D D-1531

Model TS-1685-D1521-16G-550W

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B

QNAP

TS-1685-D1521-8G NAS Tower Intel® Xeon® D D-1521

Model TS-1685-D1521-8G

View product
Storage1 differ
Number of M.2 (M & B) slotsKnown for one6
RAID levelsDiffers0, 1, 5, 6, 10, 50, 60, JBOD0, 1, 5, 6, JBOD
Online RAID migrationKnown for oneYes
Online RAID expansionKnown for oneYes
Bad block scanKnown for oneYes
Storage drive sizeKnown for one2.5/3.5"
Processor6 differ
Processor modelDiffersD-1531D-1521
Processor frequencyDiffers2.2 GHz2.4 GHz
Processor coresDiffers64
Processor threadsDiffers128
Processor cacheDiffers9 MB6 MB
Processor cache typeKnown for oneL3
Processor codeDiffersSR2DGSR2DF
Memory1 differ
Internal memoryDiffers16 GB8 GB
Memory form factorKnown for oneRDIMM
Memory slotsKnown for one4
Network2 differ
Ethernet LAN data ratesDiffers1000,10000 Mbit/s10,100,1000,10000 Mbit/s
Ethernet LAN data rate supported (max)Known for one10000 Mbit/s
Copper ethernet cabling technologyKnown for one10GBASE-T, 1000BASE-T
Supported network protocolsDiffersTCP/IPIPv4, IPv6, MB2/SMB3, NFS v3/NFS v4, FTP, FTPS, TFTP, HTTP, HTTPS, SSH, iSCSI, SNMP, SMTP, SMSC
Link aggregationKnown for oneYes
Ports & interfaces2 differ
USB 2.0 ports quantityDiffers02
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers31
3.5 mm (1/8-inch) outKnown for oneYes
PCI Express x8 (Gen 3.x) slotsKnown for one2
RS-232 portsKnown for one0
Thunderbolt 3 ports quantityKnown for one0
Design2 differ
Chassis typeDiffersDesktopTower
LED indicatorsDiffersHDD, SSD, SystemYes
Built-in speaker(s)Known for oneYes
Number of built-in speakersKnown for one1
Performance4 differ
Device classDiffersLarge Enterprise BusinessHome & Home Office
Backup featuresDiffersCloud, USB drive, iSCSI LUNCloud, iSCSI LUN
Noise levelKnown for one22.5 dB
Share folder access right managementKnown for oneYes
Backup buttonKnown for oneYes
Browser supportedDiffersInternet Explorer 10+, Chrome, Firefox, Safari 7+Internet Explorer 10, Firefox 8, Safari 4, Google Chrome
Security algorithmsDiffers256-bit AES, FIPS 140-2, HTTPS, SNMP, SNMPv3, SSL/TLS256-bit AES, FIPS 140-2, SNMP, SNMPv3, SSH
Built-in FTP serverKnown for oneYes
Built-in iTunes serverKnown for oneYes
Hot spareKnown for oneYes
Password authenticationKnown for oneYes
Software1 differ
Mac operating systems supportedDiffersMac 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 MavericksYes
Operating system installedKnown for oneQNAP Turbo System
Power1 differ
Power supply unit (PSU) capacityDiffers550 W250 W
Number of power supply unitsKnown for one1
Output currentKnown for one3 A
Fan voltageKnown for one12 V
Other features1 differ
Processor ARK IDDiffers9120391202
Digital Living Network Alliance (DLNA) certifiedKnown for oneYes

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