TerabyteWise
Updated · Specifications verified October 12, 2026

Work Out Usable Space on a TerraMaster NAS

3 TerraMaster models, with the RAID types TerraMaster lists for each

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Quick answer

TerraMaster lists different RAID types by bay count. Two-bay (F2-425): RAID 0 and 1. Four-bay (F4-425 and F4-425 Plus): RAID 0, 1, 5, 6 and 10. Single-drive and JBOD modes are listed as well, and the second table gives each list as the maker writes it. The calculator works out usable space for the classic levels; the table below does it for each model with the largest drive TerraMaster quotes.

As of October 12, 2026
Best price per TB
$36.84
In-stock listings in the tables on this page
60
Prices updated
3 hours ago
Common sizes
Usable capacity
21.83 TB
Raw total
32.00 TB
Protection overhead
8.00 TB
Fault tolerance
1 drive
Live drive cost
$1179
Usable price per TB
$54.01

With 4x 8TB in RAID 5 you get about 21.83 TB usable and 1-drive fault tolerance. At the cheapest live NAS price per terabyte ($36.84/TB), filling these bays costs about $1179.

Usable capacity is shown after binary and filesystem overhead (about 9%). Fault tolerance is not a backup; keep a separate copy of important data.

Usable space on each TerraMaster model, bays full

ModelBaysDrive size usedRAID 0RAID 1RAID 5RAID 6RAID 10
F2-425230TB60TB30TBNot listedNot listedNot listed
F4-425430TB120TBTwo-bay layout90TB60TB60TB
F4-425 Plus430TB120TBTwo-bay layout90TB60TB60TB

RAID types TerraMaster lists, by model

ModelBaysRAID typesLargest drive quoted or listed
F2-4252Single, JBOD, RAID 0, RAID 1, TRAID30TB
F4-4254RAID 0, 1, 5, 6, 10, TRAID, TRAID+30TB
F4-425 Plus4RAID 0, 1, 5, 6, 10, TRAID, TRAID+30TB

Notes specific to TerraMaster

TerraMaster also lists TRAID on every model here, and TRAID+ on the four-bay ones. They are TerraMaster's own flexible array types. TerraMaster publishes no capacity formula for either, so this calculator gives no TRAID figure and the tables above cover the classic levels only.

The F4-425 Plus has three M.2 slots besides its four SATA bays. The table counts the SATA bays; TerraMaster's own maximum for that model, 144TB, adds 8TB for each M.2 slot.

TerraMaster's comparison table gives no RAID row for the F4-425 Pro, so it is left out of the tables.

Where the figures come from

Each row was read from the maker's own specification page for the model on October 12, 2026. "Not published" means the maker's page gives no figure, so none is stated here. Prices are live Amazon.com listings and change through the day.

Usable space is bays minus the drives given to protection, times drive size, in decimal terabytes. RAID 0 has no protection.

Checked on October 12, 2026. Sources: TerraMaster F2-425 specifications; TerraMaster F4-425 specifications; TerraMaster F4-425 Plus specifications.

NAS drives up to 30TB, by price per TB

CMR NAS and enterprise drives. A size and type filter, not TerraMaster's tested list.

Price per
60 products
ProductCapacityPrice$ / TBTypePrimeBuy
DC HC550 16TB 512MB SATA Ultra SE NP316 TB$589.45$36.84Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate IronWolf Pro 14 TB NAS RAID Internal Hard Drive - 7,200 RPM SATA 6 Gb/s 3.5-inch (ST14000NE0008)14 TB$521.00$37.21NAS HDD · SATACMR-Buy on Amazon
Seagate IronWolf 14TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 256MB Cache for RAID Network Attached Storage – Frustration Free Packaging (ST14000VN0008)14 TB$525.00$37.50NAS HDD · SATACMR-Buy on Amazon
TOSHIBA N300 Internal Hard Drive 22 Tb 7200 RPM 512 Mb 3.5", W129161818 (Tb 7200 RPM 512 Mb 3.5 Serial Ata Iii)22 TB$834.81$37.95NAS HDD · SATACMR-Buy on Amazon
Toshiba - HDWG82AXZSTB - Toshiba N300 Pro HDWG82AXZSTB 20 TB Hard Drive - 3.5 Internal - SATA (SATA/600) - Conventional20 TB$766.99$38.35NAS HDD · SATACMR-Buy on Amazon
Toshiba MG Series Enterprise 12TB 3.5’’ SATA 6Gbit/s Internal HDD 7200RPM 550TB/year 24/7 Operation. MG07ACA12TE12 TB$469.99$39.17Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate Enterprise 3.5" 18000 GB 7200 RPM 18 TB 3.5" 7200 RPM SATA ST18000NM00J18 TB$712.00$39.56Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate Enterprise Capacity | ST10000NM0016 | 10TB 7200 RPM SATA 6.0Gb/s 256MB Cache Hyperscale 512e 3.5" Hard Disk Drives10 TB$399.95$39.99Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate IronWolf Pro ST14000NE0008 14 TB Hard Drive - 3.5" Internal - SATA (SATA/600)14 TB$565.92$40.42NAS HDD · SATACMR-Buy on Amazon
Western Digital WUH721414ALE6L4 14TB Ultrastar DC HC530 SATA HDD - 7200 RPM Class, SATA 6 Gb/s, 512MB Cache, 3.5"14 TB$581.00$41.50Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate 20TB Exos Enterprise Hard Drive | SATA (ST20000NM002H)20 TB$829.99$41.50Enterprise HDD · SATACMREnterprise-Buy on Amazon
Toshiba - HDWG81GXZSTB - Toshiba N300 Pro HDWG81GXZSTB 16 TB Hard Drive - 3.5 Internal - SATA (SATA/600) - Conventional16 TB$685.50$42.84NAS HDD · SATACMR-Buy on Amazon
Seagate 14TB HDD Exos X14 7200 RPM 512e/4Kn SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive (ST14000NM0018)14 TB$600.00$42.86Enterprise HDD · SATACMREnterprise-Buy on Amazon
HGST WD Ultrastar DC HC510 10TB 7200 RPM SATA 6Gb/s 3.5" Helium Platform Enterprise Hard Disk Drive - HUH721010ALE604 (0F27606)10 TB$429.00$42.90Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate Exos X18 Enterprise Class, 16TB, Enterprise Internal Hard Drive, SATA, 3,5" 6Gbit/s, 128MB Cache (ST16000NM000J)16 TB$686.91$42.93Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate IronWolf 10TB NAS Internal Hard Drive, 3.5" SATA 6Gb/s, 7200 RPM, CMR, RAID Optimized, IronWolf Health Management – for NAS Systems (ST10000VNZ00)10 TB$434.99$43.50NAS HDD · SATACMR-Buy on Amazon
Western Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD221KFGXSold by Amazon22 TB$958.90$43.59NAS HDD · SATACMRPrimeBuy on Amazon
Seagate Exos 7E8 6TB Internal Hard Drive Enterprise HDD – CMR 3.5 Inch 512E SATA 6Gb/s 7200 RPM 128MB Cache for Enterprise, Data Center – Frustration Free Packaging (ST6000NM021A)6 TB$262.02$43.67Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate Exos X10 ST10000NM0126 10TB 7200 RPM SATA 6Gb/s 512e 256MB 3.5in Enterprise Hard Drive10 TB$439.99$44.00Enterprise HDD · SATACMREnterprise-Buy on Amazon
Western Digital 20TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD202KFGXSold by Amazon20 TB$880.96$44.05NAS HDD · SATACMRPrimeBuy on Amazon
Western Digital 18TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD181KFGX18 TB$793.99$44.11NAS HDD · SATACMR-Buy on Amazon
Seagate Exos X14 ST12000NM0008 12 TB Hard Drive - 3.5" Internal - SATA (SATA/600)12 TB$531.45$44.29Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate IronWolf Pro 14TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 256MB Cache for RAID Network Attached Storage, Data Recovery Service – Frustration Free Packaging (ST14000NEZ008)14 TB$619.99$44.29NAS HDD · SATACMR-Buy on Amazon
Seagate IronWolf 16TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6GB/S 7200 RPM 256MB Cache for Raid Network Attached Storage, with Rescue Service (ST16000VN001)16 TB$711.45$44.47NAS HDD · SATACMR-Buy on Amazon
Seagate IronWolf Pro ST12000NE0008 12 TB Hard Drive - 512E Format - SATA 600-3.5" Drive - Internal - 7200RPM - 256 MB Buffer - Hot Pluggable12 TB$534.99$44.58NAS HDD · SATACMR-Buy on Amazon
Western Digital 16TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD161KFGXSold by Amazon16 TB$714.99$44.69NAS HDD · SATACMRPrimeBuy on Amazon
Seagate IronWolf 10Tb NAS Internal Hard Drive HDD – 3.5 Inch SATA 6GB/S 7200 RPM 256MB Cache for Raid Network Attached Storage (ST10000VN0004)10 TB$449.99$45.00NAS HDD · SATACMR-Buy on Amazon
HGST - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/s 256MB Cache 3.5-Inch Helium Data Center Internal Hard Disk Drive12 TB$541.45$45.12Enterprise HDD · SATACMREnterprise-Buy on Amazon
Western Digital 12TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD122KFBXSold by Amazon12 TB$541.68$45.14NAS HDD · SATACMRPrimeBuy on Amazon
Western Digital 10TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 GB/s, CMR, 512 MB Cache, 3.5" - WD100EFGXSold by Amazon10 TB$455.75$45.58NAS HDD · SATACMRPrimeBuy on Amazon
Seagate IronWolf Pro ST12000NE0008 12 TB Hard Drive - 3.5" Internal - SATA (SATA/600)12 TB$550.00$45.83NAS HDD · SATACMR-Buy on Amazon
Seagate IronWolf Pro 16TB 7200 RPM SATA 6Gb/s 3.5" NAS HDD (ST16000NE000)16 TB$738.96$46.19NAS HDD · SATACMR-Buy on Amazon
Western Digital Ultrastar DC HC550 WUH721816ALE6L4 0F38462 16TB 7.2K RPM SATA 6Gb/s 512e 512MB 3.5" SE HDD16 TB$744.45$46.53Enterprise HDD · SATACMREnterprise-Buy on Amazon
Western Digital 16TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD161KRYZSold by Amazon16 TB$749.00$46.81Enterprise HDD · SATACMREnterprisePrimeBuy on Amazon
WD WUS721010ALE6L4 Ultrastar DC HC330 0B42266 10TB 7200 RPM SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive10 TB$471.45$47.15Enterprise HDD · SATACMREnterprise-Buy on Amazon
Toshiba MG09ACA18TE 18 TB Hard Drive - 3.5 Internal - SATA [SATA/600]18 TB$849.99$47.22Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate Exos X24 3.5" Internal Hard Drive - 12TB, Single, SATA III 6 Gb/s12 TB$569.99$47.50Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive20 TB$950.00$47.50Enterprise HDD · SATACMREnterprise-Buy on Amazon
Enterprise 28TB SATA 6Gb/s Hard Drive - Seagate Exos M ST28000NM003K28 TB$1,333.50$47.63Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate IronWolf Pro, 14 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST14000NT001)14 TB$667.00$47.64NAS HDD · SATACMR-Buy on Amazon
Western Digital 20TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD203KRYZ20 TB$953.99$47.70Enterprise HDD · SATACMREnterprise-Buy on Amazon
Western Digital 26TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD260KFGX26 TB$1,240.99$47.73NAS HDD · SATACMR-Buy on Amazon
Western Digital 8TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD8005FRYZSold by Amazon8 TB$387.99$48.50Enterprise HDD · SATACMREnterprisePrimeBuy on Amazon
Seagate IronWolf Pro 12TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage Data Recovery Service – Frustration Free Packaging (ST12000NEZ008)12 TB$584.45$48.70NAS HDD · SATACMR-Buy on Amazon
Western Digital WD Red Plus Internal Hard Drive 8TB CMR 3.5 inch SATA 5640 RPM 256MB NAS WD80EFPX-AJP Eco Package8 TB$389.99$48.75NAS HDD · SATACMR-Buy on Amazon
Western Digital WUH721816ALE6L4 3.5" 16TB SATA 6Gb/s7.2K RPM 512M 0F38462 512e/4Kn HDD16 TB$784.45$49.03Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate IronWolf 18TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, Rescue Services – Frustration Free Packaging (ST18000VNZ00)18 TB$884.45$49.14NAS HDD · SATACMR-Buy on Amazon
Seagate Exos X18 ST18000NM001J 18 TB Hard Drive - Internal - SATA (SATA/600)18 TB$884.45$49.14Enterprise HDD · SATACMREnterprise-Buy on Amazon
Western Digital 12TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD122KRYZSold by Amazon12 TB$594.99$49.58Enterprise HDD · SATACMREnterprisePrimeBuy on Amazon
WD Red Pro 18TB NAS 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, CMR, 512MB Cache18 TB$894.45$49.69NAS HDD · SATACMR-Buy on Amazon
Western Digital Ultrastar WUH722020CLE6L4 20 TB Hard Drive - 3.5" Internal - SATA - Energy-Assisted Magnetic Recording (EAMR) Method20 TB$999.00$49.95Enterprise HDD · SATACMREnterprise-Buy on Amazon
Toshiba 4TB Enterprise Internal Hard Drive – MG Series 3.5" SATA HDD for Server, Storage, 24/7 Operation, Hyperscale, Cloud (MG04ACA400E)4 TB$199.99$50.00Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate 8TB Enterprise Capacity 3.5 HDD 7200RPM SATA 6Gbps 256 MB Cache Internal Bare Drive (ST8000NM0055)8 TB$400.00$50.00Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate IronWolf 10TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache RAID Network Attached Storage Home Servers - (ST10000VN0008)10 TB$500.00$50.00NAS HDD · SATACMR-Buy on Amazon
Western Digital 18TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181KRYZ18 TB$917.50$50.97Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate Constellation ES.3 ST4000NM0033 4 TB Hard Drive - 3.5 Internal - SATA4 TB$204.92$51.23Enterprise HDD · SATACMREnterprise-Buy on Amazon
Western Digital 14TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" -WD142KFGXSold by Amazon14 TB$717.21$51.23NAS HDD · SATACMRPrimeBuy on Amazon
Seagate Exos 7E8 4TB 512n SATA 128MB Cache 3.5-Inch Enterprise Hard Drive (ST4000NM0035), Mechanical Hard Disk4 TB$205.00$51.25Enterprise HDD · SATACMREnterprise-Buy on Amazon
Western Digital Ultrastar WUH722014CLE6L4 14 TB Hard Drive - 3.5" Internal - SATA - Energy-Assisted Magnetic Recording (EAMR) - Server Device Supported - 7200rpm - 512e Format - 512 MB Buffer14 TB$729.99$52.14Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate IronWolf 10TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, with Rescue Service (ST10000VN0008)10 TB$524.45$52.45NAS HDD · SATACMR-Buy on Amazon

Renewed, refurbished and used listings

Shown for reference. These are not counted in the best price per TB above, and warranty terms differ from new drives.

Price per
20 products
ProductCapacityPrice$ / TBTypePrimeBuy
Toshiba MG Series Enterprise 10TB 3.5’’ SATA 6Gbit/s Internal HDD 7200RPM 550TB/year 24/7 Operation. MG06ACA10TEUsed10 TB$248.99$24.90Enterprise HDD · SATACMREnterprise-Buy on Amazon
Toshiba 14TB SATA 512e 256MB Cache 7200RPM 3.5" SATA 6.0Gb/s Enterprise Hard Drive - MG07ACA14TE (Renewed)Renewed14 TB$349.99$25.00Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate Exos x12 12TB SATA 6Gb/s 256MB Cache Enterprise Hard Drive 3.5in (ST12000NM0127) (Renewed)Renewed12 TB$307.99$25.67Enterprise HDD · SATACMREnterprise-Buy on Amazon
MDD MAXDIGITALDATA MDD (MDD14TSATA25672E) 14TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5-inch Enterprise Hard Drive - 5 Years Warranty (Renewed)Renewed14 TB$359.99$25.71Enterprise HDD · SATACMREnterprise-Buy on Amazon
Western Digital 14TB Ultrastar DC HC530 SATA HDD - 7200 RPM, SATA 6 Gb/s, 512MB Cache, 3.5" - WUH721414ALE604 (Renewed)Renewed14 TB$369.99$26.43Enterprise HDD · SATACMREnterprise-Buy on Amazon
Western Digital 14TB Ultrastar DC HC530 SATA HDD - 7200 RPM Class, SATA 6 Gb/s, 512MB Cache, 3.5" - WUH721414ALE604 (Renewed)Renewed14 TB$369.99$26.43Enterprise HDD · SATACMREnterprise-Buy on Amazon
Toshiba Enterprise MG Series 3.5" 16TB SATA 3UsedSold by Amazon16 TB$425.70$26.61Enterprise HDD · SATACMREnterprisePrimeBuy on Amazon
Seagate Exos X14 ST12000NM0008 12 TB Hard Drive - 3.5" Internal - SATA (SATA/600)Used12 TB$319.59$26.63Enterprise HDD · SATACMREnterprise-Buy on Amazon
Seagate Constellation ES.3 ST4000NM0033 4 TB Hard Drive - 3.5 Internal - SATAUsed4 TB$107.00$26.75Enterprise HDD · SATACMREnterprise-Buy on Amazon
MDD MAXDIGITALDATA (MDD12TSATA25672E) 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5-inch Enterprise Hard Drive (Renewed)Renewed12 TB$329.95$27.50Enterprise HDD · SATACMREnterprise-Buy on Amazon
HGST WD Ultrastar DC HC520 12TB HDD 7200 RPM SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive | Power-Disable | HUH721212ALE604 0F29592 (Renewed)Renewed12 TB$329.99$27.50Enterprise HDD · SATACMREnterprise-Buy on Amazon
HP/Western Digital Ultrastar DC HC550 WUH721818ALE600 0F38492 18TB 7200 RPM SATA 6Gb/s 512e 512MB Cache Power Disable 3.5in Enterprise Hard Drive MB018000GXLAV P37677-001 (Renewed)Renewed18 TB$499.00$27.72Enterprise HDD · SATACMREnterprise-Buy on Amazon
MDD (MDD26TSATA51272E) 26TB 7200RPM 512MB Cache SATA 6.0Gb/s 3.5inch Internal Enterprise Hard Drive - 5 Years Warranty (Renewed)Renewed26 TB$789.99$30.38Enterprise HDD · SATARecording type not confirmed by MDDNASEnterprise-Buy on Amazon
Seagate Exos 26TB Internal Hard Drive HDD - 3.5 in CMR SATA 6Gb/s, 7200 RPM, 512MB Cache, 2.5M MTBF (ST26000NM000C) (Renewed)Renewed26 TB$809.99$31.15Enterprise HDD · SATARecording type not confirmed by SeagateNASEnterprise-Buy on Amazon
Seagate Exos ST24000NM000C 24TB 7.2K RPM SATA 6Gb/s 512e 3.5in Enterprise Hard Drive (Renewed)Renewed24 TB$749.99$31.25Enterprise HDD · SATARecording type not confirmed by SeagateNASEnterprise-Buy on Amazon
Seagate Exos ST24000NM001C 24TB 7200RPM 512e SATA 6Gb/s 512MB Cache 3.5-Inch Enterprise Hard Drive (Renewed)Renewed24 TB$749.99$31.25Enterprise HDD · SATARecording type not confirmed by SeagateNASEnterprise-Buy on Amazon
Seagate Exos ST28000NM001C 28TB 7200 RPM SATA 6Gb/s 512e 3.5in Enterprise Hard Drive (Renewed)Renewed28 TB$879.99$31.43Enterprise HDD · SATARecording type not confirmed by SeagateNASEnterprise-Buy on Amazon
Seagate Exos ST26000NM001C 26TB 7200 RPM SATA 6Gb/s 512e 3.5in Enterprise Hard Drive (Renewed)Renewed26 TB$819.99$31.54Enterprise HDD · SATARecording type not confirmed by SeagateNASEnterprise-Buy on Amazon
Seagate Exos X24 24TB Enterprise Hard Drive HDD SATA 6Gb/s 512MB Cache 7200 RPM 512e CMR Helium Sealed 3.5in Hard Drive ST24000NM000H (Renewed)Renewed24 TB$758.99$31.62Enterprise HDD · SATARecording type not confirmed by SeagateNASEnterprise-Buy on Amazon
Seagate Exos 28TB Internal Hard Drive HDD - 3.5 in CMR SATA 6Gb/s, 7200 RPM, 512MB Cache, 2.5M MTBF - ST28000NM000C (Renewed)Renewed28 TB$889.99$31.79Enterprise HDD · SATARecording type not confirmed by SeagateNASEnterprise-Buy on Amazon

Frequently asked questions

Which RAID levels does the F2-425 support?

RAID 0 and 1, plus single-drive and JBOD modes. TerraMaster also lists TRAID.

How much usable space does a two-bay TerraMaster give in RAID 1?

F2-425: 30TB with two 30TB drives.

Which RAID levels do the F4-425 and F4-425 Plus support?

RAID 0, 1, 5, 6 and 10, plus single-drive and JBOD modes. TerraMaster also lists TRAID and TRAID+.

How much usable space does a four-bay TerraMaster give in RAID 5?

F4-425: 90TB with four 30TB drives. F4-425 Plus: 90TB with four 30TB drives.

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Last updated: 2026-10-12 18:03:49 UTC. As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date indicated on Amazon.com and are subject to change. Any price displayed at the time of purchase will apply. CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON SERVICES LLC. THIS CONTENT IS PROVIDED AS IS AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.