Western Digital Black 4TB

Desktop HDD

Part number WD4001FAEX · Black series · 3.5" SATA HDD. If your machine is listed below, this drive is officially supported — not a forum workaround.

Part of the Western Digital Black series →

Check WD4001FAEX price on Amazon partner link

145

Compatible NAS models

61 Syn · 84 QNAP · 0 Asus · 0 TM

By vendor

4 TB

Listed capacity

Western Digital

Manufacturer

3-2-1 cold backup fit

No series-level recording rating is on file for this part number yet — check the exact model for CMR vs SMR before buying it as a large cold copy (SMR is the one trait that makes a 16 TB+ backup copy painfully slow). The 3-2-1 guide and the backup tools encyclopedia cover what to schedule it with.

Compatibility verdict

It appears on the official compatibility lists of 145 machines and series — 61 Synology, 84 QNAP. Check the class badge above: drives tagged NAS or Enterprise are built for 24/7 multi-bay operation. Desktop-class drives often lack vibration resistance and are usually absent from vendor HCLs. No series-level recording rating is on file for this part number yet, so check CMR vs SMR on the exact model before buying for an array.

Compatible NAS models

Synology DS1010+5-bay See its full HCL → Synology DS1091-bay See its full HCL → Synology DS109+1-bay See its full HCL → Synology DS110+1-bay See its full HCL → Synology DS110j1-bay See its full HCL → Synology DS1111-bay See its full HCL → Synology DS1121-bay See its full HCL → Synology DS112+1-bay See its full HCL → Synology DS112j1-bay See its full HCL → Synology DS1141-bay See its full HCL → Synology DS115j1-bay See its full HCL → Synology DS1511+5-bay See its full HCL → Synology DS1512+5-bay See its full HCL → Synology DS1513+5-bay See its full HCL → Synology DS1812+8-bay See its full HCL → Synology DS1813+8-bay See its full HCL → Synology DS2092-bay See its full HCL → Synology DS209+2-bay See its full HCL → Synology DS209+II2-bay See its full HCL → Synology DS210+2-bay See its full HCL → Synology DS210j2-bay See its full HCL → Synology DS2112-bay See its full HCL → Synology DS211+2-bay See its full HCL → Synology DS211j2-bay See its full HCL → Synology DS2122-bay See its full HCL → Synology DS212+2-bay See its full HCL → Synology DS212j2-bay See its full HCL → Synology DS2132-bay See its full HCL → Synology DS213+2-bay See its full HCL → Synology DS213air2-bay See its full HCL → Synology DS213j2-bay See its full HCL → Synology DS214se2-bay See its full HCL → Synology DS216se2-bay See its full HCL → Synology DS4094-bay See its full HCL → Synology DS409+4-bay See its full HCL → Synology DS4104-bay See its full HCL → Synology DS410j4-bay See its full HCL → Synology DS4114-bay See its full HCL → Synology DS411+4-bay See its full HCL → Synology DS411+II4-bay See its full HCL → Synology DS411j4-bay See its full HCL → Synology DS412+4-bay See its full HCL → Synology DS4134-bay See its full HCL → Synology DS413j4-bay See its full HCL → Synology DS509+5-bay See its full HCL → Synology DS710+7-bay See its full HCL → Synology DS712+7-bay See its full HCL → Synology DS713+7-bay See its full HCL → Synology RS212 See its full HCL → Synology RS214 See its full HCL → Synology RS409 See its full HCL → Synology RS409+ See its full HCL → Synology RS409RP+ See its full HCL → Synology RS411 See its full HCL → Synology RS810+ See its full HCL → Synology RS810RP+ See its full HCL → Synology RS812 See its full HCL → Synology RS812+ See its full HCL → Synology RS812RP+ See its full HCL → Synology RS814+ See its full HCL → Synology RS814RP+ See its full HCL → QNAP TS-1079 Pro See its full HCL → QNAP TS-110 See its full HCL → QNAP TS-112 See its full HCL → QNAP TS-112P See its full HCL → QNAP TS-119 See its full HCL → QNAP TS-119P+ See its full HCL → QNAP TS-119P II See its full HCL → QNAP TS-120 See its full HCL → QNAP TS-121 See its full HCL → QNAP TS-1269U-RP See its full HCL → QNAP TS-1270U-RP See its full HCL → QNAP TS-1279U-RP See its full HCL → QNAP TS-131 See its full HCL → QNAP TS-1679U-RP See its full HCL → QNAP TS-210 See its full HCL → QNAP TS-212 See its full HCL → QNAP TS-212-E See its full HCL → QNAP TS-212P See its full HCL → QNAP TS-219 See its full HCL → QNAP TS-219P See its full HCL → QNAP TS-219P+ See its full HCL → QNAP TS-219P II See its full HCL → QNAP TS-220 See its full HCL → QNAP TS-221 See its full HCL → QNAP TS-231 See its full HCL → QNAP TS-239 Pro See its full HCL → QNAP TS-239 Pro II See its full HCL → QNAP TS-239 Pro II+ See its full HCL → QNAP TS-259 Pro See its full HCL → QNAP TS-259 Pro+ See its full HCL → QNAP TS-269L See its full HCL → QNAP TS-269 Pro See its full HCL → QNAP TS-410 See its full HCL → QNAP TS-410U See its full HCL → QNAP TS-412 See its full HCL → QNAP TS-412U See its full HCL → QNAP TS-419P See its full HCL → QNAP TS-419P+ See its full HCL → QNAP TS-419P II See its full HCL → QNAP TS-419U See its full HCL → QNAP TS-419U+ See its full HCL → QNAP TS-419U II See its full HCL → QNAP TS-420 See its full HCL → QNAP TS-420U See its full HCL → QNAP TS-421 See its full HCL → QNAP TS-421U See its full HCL → QNAP TS-431 See its full HCL → QNAP TS-439 Pro See its full HCL → QNAP TS-439 Pro II See its full HCL → QNAP TS-439 Pro II+ See its full HCL → QNAP TS-459U-RP+ SP+ See its full HCL → QNAP TS-459 Pro See its full HCL → QNAP TS-459 Pro+ See its full HCL → QNAP TS-459 Pro II See its full HCL → QNAP TS-469L See its full HCL → QNAP TS-469U-RP See its full HCL → QNAP TS-469U-SP See its full HCL → QNAP TS-469 Pro See its full HCL → QNAP TS-559 Pro See its full HCL → QNAP TS-559 Pro+ See its full HCL → QNAP TS-559 Pro II See its full HCL → QNAP TS-569L See its full HCL → QNAP TS-569 Pro See its full HCL → QNAP TS-639 Pro See its full HCL → QNAP TS-659 Pro See its full HCL → QNAP TS-659 Pro+ See its full HCL → QNAP TS-659 Pro II See its full HCL → QNAP TS-669L See its full HCL → QNAP TS-669 Pro See its full HCL → QNAP TS-809U-RP See its full HCL → QNAP TS-809 Pro See its full HCL → QNAP TS-859U-RP See its full HCL → QNAP TS-859U-RP+ See its full HCL → QNAP TS-859 Pro See its full HCL → QNAP TS-859 Pro+ See its full HCL → QNAP TS-869L See its full HCL → QNAP TS-869U-RP See its full HCL → QNAP TS-869 Pro See its full HCL → QNAP TS-870U-RP See its full HCL → QNAP TS-879U-RP See its full HCL → QNAP TS-879 Pro See its full HCL → QNAP TS-EC1279U-RP See its full HCL → QNAP TS-EC1679U-RP See its full HCL → QNAP TS-EC879U-RP See its full HCL →

Same-capacity alternatives

Other drives listed at 4 TB capacity, ranked by how many machines list them:

Toshiba MG04ACA400E 451 machines · MG04ACA**** Western Digital WD4003FFBX 390 machines · Red Pro Seagate ST4000NE0015 379 machines · Enterprise NAS HDD Toshiba MG04ACA400N 353 machines · MG04ACA**** Western Digital WD40PURZ 352 machines · Purple Seagate ST4000NM002A 346 machines · Exos 7E8 Seagate ST4000NE0025 344 machines · IronWolf Pro Western Digital HUS726T4TALA6L4 333 machines · Ultrastar 7K6

Quick answers

Is the WD4001FAEX officially compatible with my NAS?

It appears on the official compatibility lists of 145 machines and series — 61 Synology, 84 QNAP. Every machine page linked below shows the vendor's own list entry, refreshed daily.

Is the WD4001FAEX a good NAS drive?

Check the class badge above: drives tagged NAS or Enterprise are built for 24/7 multi-bay operation. Desktop-class drives often lack vibration resistance and are usually absent from vendor HCLs. No series-level recording rating is on file for this part number yet, so check CMR vs SMR on the exact model before buying for an array.

Can I use the WD4001FAEX for a 3-2-1 cold backup copy?

No series-level recording rating is on file for this part number yet — check the exact model for CMR vs SMR before buying it as a large cold copy (SMR is the one trait that makes a 16 TB+ backup copy painfully slow). The 3-2-1 guide and the backup tools encyclopedia cover what to schedule it with.

What are alternatives to the WD4001FAEX?

At the same capacity, the most widely listed alternatives are Toshiba MG04ACA400E (451 machines), Western Digital WD4003FFBX (390 machines), Seagate ST4000NE0015 (379 machines). The full ranked list is below.