Compatible hard drives for QNAP TS-451DeU

209 drives are on QNAP's official compatibility list for the TS-451DeU, up to 20TB listed. Read from qnap.com, list refreshed 2026-11-03.

4-bay Legacy model

Intel Celeron J4025 2-core/2-thread processor · 2 GB SODIMM DDR4 · max 8 GB (2 x 4GB)

QNAP
CPUIntel Celeron J4025 2-core/2-thread processor, burst up to 2.9 GHz
Architecture64-bit x86
Memory (as shipped)2 GB SODIMM DDR4
Maximum memory8 GB (2 x 4GB)
Drive bays4 x 3.5-inch SATA 6Gb/s, 3Gb/s 2
209
Listed drives
131
NAS line
55
Enterprise line
23
SSD & surveillance

This vendor publishes its compatibility list as an advisory tested matrix — drives not on it are not firmware-blocked. Treat the list as a quality signal; off-list drives work but fall outside the tested pairing.

Capacity range on the official list

20TB (2) 18TB (9) 16TB (16) 14TB (23) 12TB (21) 10TB (26) 8TB (40) 8TB & below (72)

Where to start on the TS-451DeU

For a home or small-office workload, the NAS lines below balance sustained writes and RAID-rebuild tolerance. Enterprise speed is only worth paying for in full-bay builds:

Full TS-451DeU compatibility list

Grouped by part number; Max shows the largest capacity QNAP lists. Filter by brand, line or capacity:

DriveBrandSeriesLineTypeMax listed
MG10ACA20TA Toshiba MG10 Enterprise SATA 6Gb/s (SATA III) 20 TB
MG10ACA20TE Toshiba MG10 Enterprise SATA 6Gb/s (SATA III) 20 TB
HDWG51JAZSTA (HDWG51J*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 18 TB
HDWG51JEZSTA (HDWG51J*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 18 TB
HDWG51JUZSVA (HDWG51J*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 18 TB
HDWG51JXZSTA (HDWG51J*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 18 TB
HDWG51JYZSTA (HDWG51J*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 18 TB
MN09ACA18T Toshiba MN09 NAS SATA 6Gb/s (SATA III) 18 TB
ST18000NE000-2YY101 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 18 TB
ST18000NT001-3LU101 Seagate IronWolf Pro Enterprise SATA 6Gb/s (SATA III) 18 TB
ST18000VN000-2YV101 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 18 TB
HDWG51GAZSTA (HDWG51G*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 16 TB
HDWG51GEZSTA (HDWG51G*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 16 TB
HDWG51GUZSVA (HDWG51G*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 16 TB
HDWG51GXZSTA (HDWG51G*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 16 TB
HDWG51GYZSTA (HDWG51G*) Toshiba N300/N300 Pro NAS SATA 6Gb/s (SATA III) 16 TB
MG08ACA16TE Toshiba MG08 Enterprise SATA 6Gb/s (SATA III) 16 TB
MG08ACA16TEY Toshiba MG08 Enterprise SATA 6Gb/s (SATA III) 16 TB
MN09ACA16T Toshiba MN09 NAS SATA 6Gb/s (SATA III) 16 TB
ST16000NE000 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 16 TB
ST16000NE000-2WX103 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 16 TB
ST16000NM001G Seagate Enterprise Enterprise SATA 6Gb/s (SATA III) 16 TB
ST16000NT001-3LV101 Seagate IronWolf Pro Enterprise SATA 6Gb/s (SATA III) 16 TB
ST16000VE000 Seagate Surveillance Surveillance SATA 6Gb/s (SATA III) 16 TB
ST16000VN001 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 16 TB
ST16000VN001-2RV103 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 16 TB
ST16000VN001-2YU101 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 16 TB
HDWG21EAZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 14 TB
HDWG21EEZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 14 TB
HDWG21EUZSVA(Bulk) Toshiba N300 NAS SATA 6Gb/s (SATA III) 14 TB
HDWG21EXZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 14 TB
HDWG21EYZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 14 TB
MG07ACA14TE Toshiba Enterprise Enterprise SATA 6Gb/s (SATA III) 14 TB
MG08ACA14TE Toshiba MG08 Enterprise SATA 6Gb/s (SATA III) 14 TB
MG08ACA14TEY Toshiba MG08 Enterprise SATA 6Gb/s (SATA III) 14 TB
MN07ACA14T Toshiba MN NAS SATA 6Gb/s (SATA III) 14 TB
ST14000NE0008 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 14 TB
ST14000NE0008-2YX101 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 14 TB
ST14000NM0018-2H4101 Seagate Enterprise Enterprise SATA 6Gb/s (SATA III) 14 TB
ST14000NM001G Seagate EXOS x16 Enterprise SATA 6Gb/s (SATA III) 14 TB
ST14000NT001-3LW101 Seagate IronWolf Pro Enterprise SATA 6Gb/s (SATA III) 14 TB
ST14000VE0008 Seagate Surveillance Surveillance SATA 6Gb/s (SATA III) 14 TB
ST14000VN0008-2KU103 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 14 TB
ST14000VN0008-2YT101 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 14 TB
WD140EFFX-68VBXN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 14 TB
WD140EFGX-68B0GN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 14 TB
WD141KFGX Western Digital Red Pro NAS SATA 6Gb/s (SATA III) 14 TB
WD141KRYZ Western Digital Surveillance Gold Enterprise SATA 6Gb/s (SATA III) 14 TB
WD141VRYZ Western Digital Surveillance Gold Enterprise SATA 6Gb/s (SATA III) 14 TB
WUH721414ALE6L4 Western Digital Ultrastar DC HC530 Enterprise SATA 6Gb/s (SATA III) 14 TB
HUH721212ALE600 Western Digital Ultrastar DC HC520 Enterprise SATA 6Gb/s (SATA III) 12 TB
HUH721212ALE604 Western Digital Ultrastar DC HC520 Enterprise SATA 6Gb/s (SATA III) 12 TB
MG07ACA12TE Toshiba MG07 Enterprise SATA 6Gb/s (SATA III) 12 TB
ST12000NE0008 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 12 TB
ST12000NE0008-2YW101 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 12 TB
ST12000NE008 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 12 TB
ST12000NM0008 Seagate Exos X14 Enterprise SATA 6Gb/s (SATA III) 12 TB
ST12000NM001G Seagate EXOS x16 Enterprise SATA 6Gb/s (SATA III) 12 TB
ST12000NT001-3LX101 Seagate IronWolf Pro Enterprise SATA 6Gb/s (SATA III) 12 TB
ST12000VE0008 Seagate Surveillance Surveillance SATA 6Gb/s (SATA III) 12 TB
ST12000VN0007 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 12 TB
ST12000VN0008 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 12 TB
ST12000VN0008-2YS101 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 12 TB
WD120EFAX-68UNTN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 12 TB
WD120EFBX-68B0EN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 12 TB
WD121EJRX Western Digital Surveillance Surveillance SATA 6Gb/s (SATA III) 12 TB
WD121KFBX-68EF5N0 Western Digital Red Pro NAS SATA 6Gb/s (SATA III) 12 TB
WD121KRYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 12 TB
WD121PURX Western Digital Surveillance Surveillance SATA 6Gb/s (SATA III) 12 TB
WD121VRYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 12 TB
WD12EVRX Western Digital Surveillance Surveillance SATA 6Gb/s (SATA III) 12 TB
HDWG11AAZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 10 TB
HDWG11AEZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 10 TB
HDWG11AUZSVA Toshiba N300 NAS SATA 6Gb/s (SATA III) 10 TB
HDWG11AXZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 10 TB
HDWG11AYZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 10 TB
HUH721010ALE600 Western Digital Ultrastar DC HC510 Enterprise SATA 6Gb/s (SATA III) 10 TB
HUH721010ALE604 Western Digital Ultrastar DC HC510 Enterprise SATA 6Gb/s (SATA III) 10 TB
MN06ACA10T Toshiba MN06 NAS SATA 6Gb/s (SATA III) 10 TB
ST10000NE0004 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 10 TB
ST10000NE0008 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 10 TB
ST10000NE008 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 10 TB
ST10000NM001G Seagate EXOS x16 Enterprise SATA 6Gb/s (SATA III) 10 TB
ST10000NM0478 Seagate Exos X14 Enterprise SATA 6Gb/s (SATA III) 10 TB
ST10000VE0004 Seagate Surveillance SKYHAWK AI Surveillance SATA 6Gb/s (SATA III) 10 TB
ST10000VE0008 Seagate Surveillance Surveillance SATA 6Gb/s (SATA III) 10 TB
ST10000VN0004 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 10 TB
ST10000VN0008-2PJ103 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 10 TB
WD100EFAX Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 10 TB
WD101KFBX Western Digital Enterprise Enterprise SATA 6Gb/s (SATA III) 10 TB
WD102EJRX Western Digital Surveillance Surveillance SATA 6Gb/s (SATA III) 10 TB
WD102KRYZ Western Digital Surveillance Gold Enterprise SATA 6Gb/s (SATA III) 10 TB
WD102PURX Western Digital Surveillance Surveillance SATA 6Gb/s (SATA III) 10 TB
WD102PURZ Western Digital Surveillance Surveillance SATA 6Gb/s (SATA III) 10 TB
WD102PVRX Western Digital Surveillance Surveillance SATA 6Gb/s (SATA III) 10 TB
WD102VRYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 10 TB
WUS721010ALE6L4 Western Digital Ultrastar DC HC330 Enterprise SATA 6Gb/s (SATA III) 10 TB
HDWG180AZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWG180EZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWG180UZSVA(Bulk) Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWG180XZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWG180YZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWG480AZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWG480EZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWG480UZSVA Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWG480XZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWG480YZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWN180AZSTA (MN05ACA800) Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWN180EZSTA (MN05ACA800) Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWN180UZSVA (MN05ACA800) Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWN180XZSTA (MN05ACA800) Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HDWN180YZSTA (MN05ACA800) Toshiba N300 NAS SATA 6Gb/s (SATA III) 8 TB
HUH721008ALE600 Western Digital Ultrastar DC HC510 Enterprise SATA 6Gb/s (SATA III) 8 TB
HUH721008ALE604 HGST Enterprise Enterprise SATA 6Gb/s (SATA III) 8 TB
HUS728T8TALE6L4 Western Digital Ultrastar DC HC320 Enterprise SATA 6Gb/s (SATA III) 8 TB
MN05ACA800 Toshiba MN NAS SATA 6Gb/s (SATA III) 8 TB
MN06ACA800 Toshiba MN06 NAS SATA 6Gb/s (SATA III) 8 TB
MN08ADA800 Toshiba MN NAS SATA 6Gb/s (SATA III) 8 TB
ST8000NE0004 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 8 TB
ST8000NE001 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 8 TB
ST8000NE0021 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 8 TB
ST8000NM000A Seagate Exos 7E8 Enterprise SATA 6Gb/s (SATA III) 8 TB
ST8000VE000 Seagate Surveillance Surveillance SATA 6Gb/s (SATA III) 8 TB
ST8000VE0004 Seagate Surveillance SKYHAWK AI Surveillance SATA 6Gb/s (SATA III) 8 TB
ST8000VN002-2ZM188 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 8 TB
ST8000VN0022 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 8 TB
ST8000VN004 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 8 TB
ST8000VN007-3JG188 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 8 TB
ST8000VX004 Seagate Surveillance SKYHAWK Surveillance SATA 6Gb/s (SATA III) 8 TB
WD8003FFBX Western Digital Red Pro NAS SATA 6Gb/s (SATA III) 8 TB
WD8004FRYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 8 TB
WD8004VRYZ Western Digital Surveillance Gold Enterprise SATA 6Gb/s (SATA III) 8 TB
WD80EFAX-68KNBN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 8 TB
WD80EFBX-68AZZN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 8 TB
WD80EFZX Western Digital NAS NAS SATA 6Gb/s (SATA III) 8 TB
WD80EFZX-68B3CN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 8 TB
WD80EFZZ-68BTXN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 8 TB
HDWG160AZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HDWG160EZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HDWG160UZSVA(Bulk) Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HDWG160XZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HDWG160YZSTA Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HDWN160AZSTA (MN05ACA600) Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HDWN160EZSTA (MN05ACA600) Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HDWN160UZSVA (MN05ACA600) Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HDWN160XZSTA (MN05ACA600) Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HDWN160YZSTA (MN05ACA600) Toshiba N300 NAS SATA 6Gb/s (SATA III) 6 TB
HUS726T6TALE6L4 Western Digital Ultrastar DC HC310 Enterprise SATA 6Gb/s (SATA III) 6 TB
MN05ACA600 Toshiba MN NAS SATA 6Gb/s (SATA III) 6 TB
MN06ACA600 Toshiba MN06 NAS SATA 6Gb/s (SATA III) 6 TB
ST6000NE000 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 6 TB
ST6000NE0021 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 6 TB
ST6000NE0023 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 6 TB
ST6000NM021A Seagate Exos 7E8 Enterprise SATA 6Gb/s (SATA III) 6 TB
ST6000VN0033 Seagate Surveillance Surveillance SATA 6Gb/s (SATA III) 6 TB
ST6000VN006-2ZM186 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 6 TB
ST6000VN007​-3JG186 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 6 TB
ST6000VX001 Seagate Surveillance SKYHAWK Surveillance SATA 6Gb/s (SATA III) 6 TB
ST6000VX0023 Seagate Surveillance Surveillance SATA 6Gb/s (SATA III) 6 TB
WD6003FFBX Western Digital Red Pro NAS SATA 6Gb/s (SATA III) 6 TB
WD6003FRYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 6 TB
WD6003VRYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 6 TB
WD60EFZX-68B3FN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 6 TB
HDWQ140AZSTA (MN04ACA400) Toshiba N300 NAS SATA 6Gb/s (SATA III) 4 TB
HDWQ140EZSTA (MN04ACA400) Toshiba N300 NAS SATA 6Gb/s (SATA III) 4 TB
HDWQ140UZSVA (MN04ACA400) Toshiba N300 NAS SATA 6Gb/s (SATA III) 4 TB
HDWQ140XZSTA (MN04ACA400) Toshiba N300 NAS SATA 6Gb/s (SATA III) 4 TB
HDWQ140YZSTA (MN04ACA400) Toshiba N300 NAS SATA 6Gb/s (SATA III) 4 TB
HUS726T4TALE6L4 Western Digital Ultrastar DC HC310 Enterprise SATA 6Gb/s (SATA III) 4 TB
MG08ADA400E Toshiba MG08-D Enterprise SATA 6Gb/s (SATA III) 4 TB
MG08ADA400EY Toshiba MG08-D Enterprise SATA 6Gb/s (SATA III) 4 TB
MN04ACA400 Toshiba MN NAS SATA 6Gb/s (SATA III) 4 TB
ST4000NE001 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 4 TB
ST4000NE0025 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 4 TB
ST4000NM002A Seagate Exos 7E8 Enterprise SATA 6Gb/s (SATA III) 4 TB
ST4000VN006-3CW104 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 4 TB
ST4000VN008 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 4 TB
ST4000VN013​-3JF104 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 4 TB
ST4000VX007 Seagate Surveillance SKYHAWK Surveillance SATA 6Gb/s (SATA III) 4 TB
WD4003FFBX Western Digital Red Pro NAS SATA 6Gb/s (SATA III) 4 TB
WD4003FRYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 4 TB
WD4003VRYZ Western Digital Surveillance Gold Enterprise SATA 6Gb/s (SATA III) 4 TB
WD40EFZX-68AWUN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 4 TB
ST3000VN006-3CW10G Seagate IronWolf NAS SATA 6Gb/s (SATA III) 3 TB
ST3000VN007 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 3 TB
ST3000VN011​-3JF10G Seagate IronWolf NAS SATA 6Gb/s (SATA III) 3 TB
ST3000VX009 Seagate Surveillance SKYHAWK Surveillance SATA 6Gb/s (SATA III) 3 TB
ST3000VX010 Seagate Surveillance Surveillance SATA 6Gb/s (SATA III) 3 TB
WD30EFZX-68AWUN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 3 TB
HUS722T2TALA604 Western Digital Ultrastar DC HA210 Enterprise SATA 6Gb/s (SATA III) 2 TB
ST2000NE0025 Seagate IronWolf Pro NAS SATA 6Gb/s (SATA III) 2 TB
ST2000NM001A Seagate Exos 7E8 Enterprise SATA 6Gb/s (SATA III) 2 TB
ST2000VN003-3CW102 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 2 TB
ST2000VN004 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 2 TB
ST2000VN009​-3JF102 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 2 TB
ST2000VX008 Seagate Surveillance SKYHAWK Surveillance SATA 6Gb/s (SATA III) 2 TB
WD2002FFSX Western Digital Red Pro NAS SATA 6Gb/s (SATA III) 2 TB
WD2005FBYZ Western Digital Enterprise Enterprise SATA 6Gb/s (SATA III) 2 TB
WD2005VBYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 2 TB
WD20EFPX-68C4TN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 2 TB
WD20EFZX-68AWUN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 2 TB
HUS722T1TALA604 Western Digital Ultrastar DC HA210 Enterprise SATA 6Gb/s (SATA III) 1 TB
ST1000VN002 Seagate IronWolf NAS SATA 6Gb/s (SATA III) 1 TB
ST1000VN008-3CW10C Seagate IronWolf NAS SATA 6Gb/s (SATA III) 1 TB
ST1000VN009​-3JF10C Seagate IronWolf NAS SATA 6Gb/s (SATA III) 1 TB
ST1000VX005 Seagate Surveillance SKYHAWK Surveillance SATA 6Gb/s (SATA III) 1 TB
WD1005FBYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 1 TB
WD1005VBYZ Western Digital Gold Enterprise SATA 6Gb/s (SATA III) 1 TB
WD10EFPX-68C4TN0 Western Digital Red Plus NAS SATA 6Gb/s (SATA III) 1 TB

Going big on the TS-451DeU?

At the top of the capacity range only enterprise lines are listed. They are built for sustained 7200RPM writes and 24/7 RAID duty — the right choice for a full-bay build:

Security: QNAP security: DeadBolt history & lockdown — eCh0raix → Qlocker → DeadBolt — what changed.