Cheapest 3.5" drives: from £52.99 (£17.66/TB)

£/TB	Price	Size	Tech	Form Factor	Condition	Description	Rating	Reviews
£17.66	£52.99	3 TB	HDD	3.5"	Renewed	DELL 91K8T 3TB 7.2K 3.5" NL SAS 6GBPS HDD (Certified Refurbished) Buy	★★★★★ 5.0	4
£22.86	£640.06	28 TB	HDD	3.5"	Renewed	Seagate Exos 28TB internal server hard drive ST28000NM000C 3.5" HDD SATA 6Gb/s 7200RPM 512MB Cache (Renewed)Bestseller Buy	★★★★☆ 4.1	136
£23.04	£599.00	26 TB	HDD	3.5"	New	Seagate Exos 26TB Internal Hard Drive, 3.5 Inch HDD, SATA3, 256MB Cache Buy	★★★★☆ 4.3	68
£23.91	£334.75	14 TB	HDD	3.5"	New	MDD (MD14TSATA25672NAS) 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal NAS Hard Drive - 5 Years Warranty Buy	★★★★☆ 4.1	96
£24.58	£344.07	14 TB	HDD	3.5"	Renewed	Toshiba 14TB SATA 512e 256MB Cache 7200RPM 3.5" SATA 6.0Gb/s Enterprise Hard Drive - MG07ACA14TE (Renewed) Buy	★★★★☆ 4.1	84
£24.64	£345.01	14 TB	HDD	3.5"	New	MDD (MD14TSATA25672NAS) 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal NAS Hard Drive Buy	★★★★☆ 4.3	51
£25.00	£149.99	6 TB	HDD	3.5"	Renewed	Seagate Enterprise Capacity 3.5 HDD\| ST6000NM0034 \| 6TB 7.2K RPM SAS 12Gb/s 128MB Cache 3.5" \| 512n \| Enterprise Hard Disk Drive for Hyperscale Applications (Certified Refurbished) w/ 3 Year Warranty Buy	★★★★☆ 4.0	101
£25.42	£610.19	24 TB	HDD	3.5"	Warehouse	Seagate 24TB IronWolf Pro Internal NAS Hard Drive \| SATA (ST24000NTZ02) Buy	★★★★½ 4.7	74
£25.95	£571.00	22 TB	HDD	3.5"	Renewed	Seagate Exos X22 22TB Internal Server Festplatte ST22000NM000C 3.5 Zoll HDD SATA 6Gb/s 512E SED 7200RPM 512MB Cache (Refurbished) Buy	★★★★☆ 4.2	207
£27.83	£278.33	10 TB	HDD	3.5"	New	HGST Ultrastar He10 \| HUH721010ALE600 \| 0F27604 \| 512E ISE 10TB SATA 6Gbps 7.2K RPM 256MB 3.5" Hard Drive Buy	★★★★★ 5.0	2
£28.55	£456.82	16 TB	HDD	3.5"	New	MDD 16TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5inch Internal Hard Drive for Surveillance Storage (MD16TGSA25672DVR) - 3 Years Warranty Buy	★★★★☆ 4.1	51
£28.56	£628.37+0.0% 24h	22 TB	HDD	3.5"	Renewed	Seagate Exos X22 22TB internal hard drive ST22000NM001E 3.5" HDD SATA3 512MB (Renewed) Buy	★★★★☆ 4.3	31
£30.08	£120.33	4 TB	HDD	3.5"	Warehouse	Seagate 4TB BarraCuda Internal Hard Drive \| SATA 6 Gb/s (ST4000DMZ04)100+ bought last month Buy	★★★★½ 4.6	46,432
£30.58	£183.49	6 TB	HDD	3.5"	New	Seagate ST6000NM0034 Enterprise 6 TB Internal Hard Drive - Black Buy	★★★★☆ 4.0	67
£31.74	£253.94	8 TB	HDD	3.5"	New	Seagate BarraCuda, 8 TB, Internal Hard Drive, SATA 6 Gbit/s, 3.5", 5400 RPM, 256 MB Cache for Desktop PC (ST8000DM004) Buy	★★★★☆ 4.4	28,664
£31.79	£445.00	14 TB	HDD	3.5"	New	Western Digital Ultrastar DC HC530 (WUH721414ALE6L4) SATA Enterprise HDD 7200 RPM, 14 TB Buy	★★★★☆ 4.0	623
£31.80	£190.78	6 TB	HDD	3.5"	New	MDD (MDD6TSATA25672DVR) 6TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5inch Internal Surveillance Hard Drive - 3 Years Warranty Buy	★★★★☆ 4.2	48
£31.90	£319.00	10 TB	HDD	3.5"	New	Seagate Exos X10 10TB internal server hard drive ST10000NM0156 3.5" HDD SATA 6Gb/s 7200RPM 256MB Cache Buy	★★★★½ 4.6	17
£32.00	£640.06	20 TB	HDD	3.5"	Renewed	Seagate Technology Exos X20, 20TB, 3.5-Inch SATA Hard Drive at 6GB/s, 7,200 RPM, 512e and 4Kn FastFormat, Low Latency with Enhanced Cache (ST20000NM007D), Green (Renewed) Buy	★★★★☆ 4.4	16
£32.40	£194.40	6 TB	HDD	3.5"	Renewed	HGST Ultrastar 7K6000 HUS726060ALE610 (0F23001) 6TB 7200 RPM 128MB Cache SATA 6.0Gbps 3.5in Enterprise Hard Drive (Renewed) Buy	★★★★☆ 4.3	6
£32.75	£130.99	4 TB	HDD	3.5"	New	WD Red Plus 4TB NAS 3.5" Internal Hard Drive - 5400 RPM, SATA 6Gb/s, CMR, 128MB Cache100+ bought last month Buy	★★★★½ 4.6	94
£32.92	£395.00	12 TB	HDD	3.5"	Renewed	Seagate 12TB ST12000DM0007 BarraCuda Pro 3.5" 7200 RPM Internal Hard Drive (Refurbished) Buy	★★★★☆ 4.2	35
£33.00	£264.00	8 TB	HDD	3.5"	New	Seagate 8TB BarraCuda Internal Hard Drive \| SATA 6 Gb/s (ST8000DMZ04)100+ bought last month Buy	★★★★½ 4.6	46,432
£33.01	£99.04-1.0% 24h	3 TB	HDD	3.5"	New	Seagate Constellation ES.2 3TB Hard Drive (7200rpm) 6Gb/s SAS 64MB (Internal) - Self Encrypting Drive 256 Model Buy	★★★★½ 4.7	2
£33.07	£198.40+5.0% 24h	6 TB	HDD	3.5"	New	Seagate BarraCuda 6 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 5400 RPM 256 MB Cache for Computer Desktop PC (ST6000DM003)100+ bought last monthUsed £143.64 · £23.94/TB Buy	★★★★☆ 4.4	28,664
£33.15	£663.00	20 TB	HDD	3.5"	New	Seagate Barracuda 20TB Internal Hard Drive, 7200 U/Min, 512MB Cache, SATA 6Gb/s, 3.5" (ST20000DM001) Buy	★★★★☆ 4.3	27
£33.48	£66.95	2 TB	HDD	3.5"	New	Bipra CCTV Camera CCTV System DVR NVR Sata Hard Drive 3.5" SATA Surveillance Storage Hard Drive (2TB) Buy	★★★★☆ 4.3	2,313
£34.17	£615.00	18 TB	HDD	3.5"	Renewed	Seagate IronWolf Pro 18TB NAS HDD, ST18000NE000 SATA 6Gb/s 3.5" (Renewed) Buy	★★★★☆ 4.2	122
£34.55	£621.90-1.3% 24h	18 TB	HDD	3.5"	New	Seagate Exos X20 18TB Internal Hard Drive - 3.5 Inch Hyperscale SATA 6GB/s HDD, 7,200 RPM, 2.5M MTBF, 512e and 4Kn FastFormat, Low Latency with Enhanced Caching (ST18000NM003D) Buy	★★★★☆ 4.2	200
£34.72	£625.00	18 TB	HDD	3.5"	Renewed	Seagate IronWolf PRO 18TB Interne Festplatte CMR 3.5 Zoll SATA III 256 MB, ST18000NE000 (Renewed) Buy	★★★★☆ 4.2	124
£34.80	£417.63	12 TB	HDD	3.5"	New	HGST Ultrastar He12 \| HUH721212ALE601 \| 0F27454 \| 12TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" Cache \| 512E \| BitLocker Hard Drive Encryption \| Power Disable Function \| Buy	★★★★★ 5.0	1
£35.00	£69.99	2 TB	HDD	3.5"	New	SANSCO 2TB Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache – for PC, Surveillance Storage, CCTV DVR – Frustration Free Packaging Buy	★★★★☆ 4.3	6
£35.31	£565.00	16 TB	HDD	3.5"	New	Seagate Barracuda 16TB Internal Hard Drive, 7200 U/Min, 512MB Cache, SATA 6Gb/s, 3.5" (ST16000DM001) Buy	★★★★☆ 4.2	55
£35.33	£423.99	12 TB	HDD	3.5"	New	Seagate IronWolf ST12000VN0008 - Hard drive - 12 TB - internal - 3.5" - SATA 6Gb/s - 7200 rpm - buffer: 256 MB Mechanical Hard Disk Buy	★★★★☆ 4.3	1,556
£35.33	£423.99	12 TB	HDD	3.5"	New	Seagate SkyHawk AI, 12 TB, Surveillance Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 256 MB Cache for DVR NVR Security Camera System, and Three-year Rescue Services (ST12000VE0008) Buy	★★★★☆ 4.3	149
£35.42	£425.00	12 TB	HDD	3.5"	New	Seagate 12TB ST12000DM0007 BarraCuda Pro 3.5" 7200 RPM Internal Hard Drive Buy	★★★★☆ 4.1	396
£35.42	£425.00	12 TB	HDD	3.5"	New	Seagate BarraCuda Pro 12TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 7200 RPM 256MB Cache for Computer Desktop PC - Amazon Exclusive - Frustration Free Packaging (ST12000DMZ007) Buy	★★★★☆ 4.1	60
£35.56	£640.00	18 TB	HDD	3.5"	New	Seagate Exos X18 Enterprise Class, 18TB, Enterprise Internal Hard Drive, SATA, 3,5" 6Gbit/s, 128MB cache ((ST18000NM000J) Buy	★★★★☆ 4.0	679
£35.75	£715.00	20 TB	HDD	3.5"	New	Seagate IronWolf Pro, NAS Internal Hard Drive 20TB HDD, 3.5 Inch, 7200 rpm, CMR, 256 MB Cache, SATA 6GB/S, Silver, Model No.: ST20000NE000 Buy	★★★★☆ 4.1	123
£35.87	£573.99	16 TB	HDD	3.5"	New	Seagate SkyHawk AI, 16 TB, Surveillance Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 256 MB Cache for DVR NVR Security Camera System, and Three-year Rescue Services (ST16000VE00) Buy	★★★★☆ 4.3	149
£35.87	£573.99	16 TB	HDD	3.5"	New	Seagate IronWolf, 16 TB, NAS, Internal Hard Drive, CMR, 3.5 Inch, SATA, 6GB/s, 5,400 RPM, 256MB Cache, for RAID Network Attached Storage, 3 year Rescue Services (ST16000VN001) Buy	★★★★☆ 4.4	432
£36.25	£435.00	12 TB	HDD	3.5"	New	Seagate IronWolf internal hard drive 3.5 12TB HDD 3 years warranty 256MB 7200rpm 24 hours operation PC NAS for RV sensor ST12000VN0008 Buy	★★★★☆ 4.0	89
£36.99	£147.94	4 TB	HDD	3.5"	Warehouse	Seagate 4TB IronWolf Internal NAS Hard Drive \| SATA 6 Gb/s (ST4000VNZ06)500+ bought last month Buy	★★★★½ 4.6	8,564
£37.09	£445.02	12 TB	HDD	3.5"	New	Seagate 12TB IronWolf Internal NAS Hard Drive \| SATA 6 Gb/s (ST12000VNZ008) Buy	★★★★½ 4.6	8,564
£37.19	£595.00	16 TB	HDD	3.5"	New	Western Digital Ultrastar DC HC550 3.5" 16000 GB Serial ATA III Buy	★★★★½ 4.6	2
£37.41	£897.94	24 TB	HDD	3.5"	New	Seagate Barracuda 24TB Internal Hard Drive, 7200 U/Min, 512MB Cache, SATA 6Gb/s, 3.5" (ST24000DM001) Buy	★★★★☆ 4.0	77
£37.49	£299.92	8 TB	HDD	3.5"	New	Seagate Skyhawk AI, 8TB, Video Internal Hard Drive, 3.5", SATA, 6Gb/s, 256MB Cache, for DVR/NVR Security Camera System, 3 year Rescue Services, FFP (ST8000VEZ01) Buy	★★★★½ 4.5	573
£37.50	£299.99	8 TB	HDD	3.5"	New	TOSHIBA 8.9cm (3.5") 8TB SATA3 NAS N300 7200RPM internal bulk Buy	★★★★☆ 4.2	73
£37.50	£150.00	4 TB	HDD	3.5"	New	Seagate Constellation ES.3 ST4000NM0033 - Festplatte - 4 TB - intern - 8.9 cm (3.5") - SATA 6Gb/s Buy	★★★★★ 5.0	3
£37.50	£599.99	16 TB	HDD	3.5"	New	Seagate IronWolf Pro 3.5-inch 16TB Internal Hard Disk HDD CMR 3.5-inch Data Recovery ST16000NT001 PC 6Gb/s 256MB 7200rpm 24-Hour Operation Buy	★★★★☆ 4.3	37
£38.00	£303.99	8 TB	HDD	3.5"	New	WD Blue 8TB 3.5" Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 256MB Cache, 2 Year Warranty Buy	★★★★½ 4.6	57,577
£38.00	£76.00	2 TB	HDD	3.5"	New	Seagate Constellation SAS 2 TB 2048 GB SAS Hard Drive (3.5 Inches, 2048 GB, 7200 RPM, SAS, 16 MB) Buy	★★★★☆ 4.0	47
£38.06	£684.99	18 TB	HDD	3.5"	New	Toshiba N300 18TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 Gb/s 7200 RPM 512 MB Cache - HDWG51JXZSTA Buy	★★★★½ 4.5	49
£38.06	£684.99	18 TB	HDD	3.5"	New	Toshiba N300 18TB Internal NAS Hard Drive, 3.5â€™â€™ SATA HDD, 7200 RPM, 24/7 Operation, Supports 1-8 bay systems, 512MB Cache, 180TB/Year workload, 3yr Warranty (HDWG51JUZSVA). Buy	★★★★☆ 4.3	283
£38.19	£611.00	16 TB	HDD	3.5"	New	Synology, HAT3310, 16TB, 3.5" SATA Home User HDD, MTBF 1.2 Million Hours Buy	★★★★☆ 4.1	148
£38.32	£229.90+1.0% 24h	6 TB	HDD	3.5"	New	Western Digital 3.5 inch 6TB SATA Intellipower Internal Desktop Hard Drive - Green Buy	★★★★☆ 4.2	1,640
£38.50	£231.00+1.0% 24h	6 TB	HDD	3.5"	New	Seagate ST6000NM0024 Enterprise 6000 GB Internal Buy	★★★★★ 5.0	1
£38.60	£154.38	4 TB	HDD	3.5"	New	MDD MAXDIGITALDATA 4TB 7200RPM 128MB Cache SAS 12Gb/s 3.5inch Internal Enterprise Hard Drive (MD4TSAS12872E) Buy	★★★★☆ 4.1	10
£38.87	£155.47+0.3% 24h	4 TB	HDD	3.5"	New	Seagate BarraCuda 4 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 5400 RPM 256 MB Cache for Computer Desktop PC Laptop (ST4000DM004)100+ bought last monthUsed £145.00 · £36.25/TB Buy	★★★★☆ 4.4	28,664
£38.95	£38.95	1 TB	HDD	3.5"	New	Bipra CCTV Camera CCTV System DVR NVR Sata Hard Drive 3.5" SATA Surveillance Storage Hard Drive (1TB) Buy	★★★★☆ 4.3	2,313
£38.99	£545.88	14 TB	HDD	3.5"	New	Seagate 14TB HDD Exos X14 7200 RPM 512e/4Kn SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive (ST14000NM0018) Buy	★★★★☆ 4.1	113
£39.00	£233.99	6 TB	HDD	3.5"	New	WD Blue 6TB 3.5" Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 256MB Cache, 2 Year Warranty Buy	★★★★½ 4.6	57,577
£39.08	£469.00	12 TB	HDD	3.5"	New	Seagate SkyHawk AI, interne Überwachungsfestplatte HDD 12 TB, 3.5 Zoll, SATA 6 Gb/s, 256 MB Cache, DVR-/NVR-Sicherheitskamerasystem, inkl. 3 Jahre Rescue Service, Modellnr.: ST12000VE001 Buy	★★★★½ 4.5	573
£39.19	£313.50	8 TB	HDD	3.5"	New	Seagate 8TB IronWolf Internal NAS Hard Drive \| SATA 6 Gb/s (ST8000VNZ02) Buy	★★★★½ 4.6	8,564
£39.27	£785.47	20 TB	HDD	3.5"	New	Seagate 20TB IronWolf Pro Internal NAS Hard Drive \| SATA (ST20000NTZ01) Buy	★★★★½ 4.5	1,999
£39.38	£315.00	8 TB	HDD	3.5"	New	Seagate SkyHawk 8TB, Video Internal Hard HDD, 3.5", SATA 6Gb/s, 256MB Cache, for DVR NVR Security Camera System, with in-house Data Rescue Services, FFP (ST8000VXZ10) Buy	★★★★½ 4.5	3,296
£39.59	£475.02	12 TB	HDD	3.5"	New	Seagate 12TB IronWolf Pro Internal NAS Hard Drive \| SATA (ST12000NTZ01) Buy	★★★★½ 4.5	1,999
£39.69	£793.80+0.7% 24h	20 TB	HDD	3.5"	New	Seagate SkyHawk AI, 20 TB, Internal Surveillance Hard Drive, 3.5", SATA 6Gb/s, 256MB Cache, DVR NVR Security Camera System, 3 year Rescue Services (ST20000VE002) Buy	★★★★☆ 4.2	816
£39.70	£79.40	2 TB	HDD	3.5"	New	Seagate Constellation ST2000NM0001 hard disk drive - internal hard drives (5 - 60 °C, -40 - 70 °C, Serial Attached SCSI (SAS), 5 - 12) Buy	★★★★☆ 4.2	26
£39.80	£397.99	10 TB	HDD	3.5"	New	WD Red Plus 10TB NAS 3.5" Internal Hard Drive - 7200 RPM, SATA 6Gb/s, CMR, 512MB Cache Buy	★★★★☆ 4.1	27
£39.83	£477.99	12 TB	HDD	3.5"	New	WD Red Plus 12TB NAS 3.5" Internal Hard Drive - 7200 RPM, SATA 6Gb/s, CMR, 512MB Cache Buy	★★★★½ 4.5	500
£39.90	£478.77	12 TB	HDD	3.5"	New	Toshiba 12TB N300 Internal Hard Drive â€“ NAS 3.5 Inch SATA HDD Supports Up to 8 Drive Bays Designed for 24/7 NAS Systems, New Generation (HDWG21CUZSVA) Buy	★★★★☆ 4.3	1,471
£39.90	£478.77-0.3% 24h	12 TB	HDD	3.5"	New	TOSHIBA N300 12TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 Gb/s 7200 RPM 512 MB Cache - HDWG51CXZSTA Buy	★★★★½ 4.6	434
£40.00	£159.99	4 TB	HDD	3.5"	New	Seagate WAVE - Seag 4TB ST4000VX007 SA3 \| SkyHawk Buy	★★★★☆ 4.1	18
£40.00	£240.00	6 TB	HDD	3.5"	New	Seagate 6TB IronWolf ST6000VN001 5400RPM 256MB NAS Buy	★★★★½ 4.5	656
£40.00	£639.98	16 TB	HDD	3.5"	New	Toshiba N300 16TB Internal NAS Hard Drive, 3.5â€™â€™ SATA HDD, 7200 RPM, 24/7 Operation, Supports 1-8 bay systems, 512MB Cache, 180TB/Year workload, 3yr Warranty (HDWG51GUZSVA). Buy	★★★★☆ 4.3	283
£40.00	£640.00	16 TB	HDD	3.5"	New	Synology HAT5300 16TB 3.5" 7200rpm SATA HDD; Designed for 24/7 environments Buy	★★★★☆ 4.1	26
£40.00	£640.02	16 TB	HDD	3.5"	New	Seagate 16TB IronWolf Pro Internal NAS Hard Drive \| SATA (ST16000NTZ01) Buy	★★★★½ 4.5	1,999
£40.00	£639.98	16 TB	HDD	3.5"	New	Toshiba 16TB N300 NAS Internal HDD - 3.5" SATA-3 512MB Cache 6GB/s 7200RPM Internal Hard Drive 7/24 NAS Unit Server & Security Drive (HDWG51GUZSVA) Buy	★★★★½ 4.8	6
£40.13	£321.00-0.0% 24h	8 TB	HDD	3.5"	New	Seagate 8TB SkyHawk AI Surveillance 3.5" Hard Drive ST8000VE000 (SATA 6Gb/s/256MB/7200 RPM) Buy	★★★★★ 5.0	3
£40.30	£403.00	10 TB	HDD	3.5"	New	Toshiba S300 10TB Surveillance 3.5” Internal Hard Drive – CMR SATA 6 Gb/s 7200 RPM 256MB Cache - HDWT31AUZSVAR Buy	★★★★½ 4.5	132
£40.68	£325.47	8 TB	HDD	3.5"	New	SKYHAWK 8TB SURVEILLANCE 3.5IN 5400RPM 6GB/S SATA 256M Buy	★★★★☆ 4.4	1,326
£40.87	£408.74	10 TB	HDD	3.5"	New	Toshiba 10TB S300 Surveillance HDD - 3.5' SATA Internal Hard Drive Supports up to 64 HD cameras at a 180TB/Year workload (HDWT720UZSVA) Buy	★★★★½ 4.5	1,894
£40.90	£122.70	3 TB	HDD	3.5"	New	Western Digital HDD RE 3TB Hard Drive (Serial Attached SCSI (SAS), 3000 GB, 8.89 cm (3.5 "), 11.2 W, 10.9 W, 9.2 W) Buy	★★★★★ 5.0	1
£41.00	£327.99	8 TB	HDD	3.5"	New	Seagate IronWolf, 8 TB, NAS, Internal Hard Drive, CMR, 3.5 Inch, SATA, 6GB/s, 5,400 RPM, 256MB Cache, for RAID Network Attached Storage, 3 year Rescue Services (ST8000VN004)Used £324.99 · £40.62/TB Buy	★★★★☆ 4.1	1,081
£41.05	£246.32	6 TB	HDD	3.5"	New	HGST Ultrastar He6 6TB 3.5" SATA 7200 RPM Enterprise Internal Hard Drive with 64Mb Cache - HUS726060ALA640/ 0F18335 64 MB Cache 3.5-Inch Internal Bare or OEM Drives 0F18335 Buy	★★★★★ 5.0	2
£41.25	£165.00	4 TB	HDD	3.5"	New	Seagate ST4000NM0025 - HDD Internal 4TB Exos 7E8 72 SAS 3.5 Buy	★★★★☆ 4.3	18
£41.25	£494.99	12 TB	HDD	3.5"	New	Seagate Exos X14 12TB 7200 RPM SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive (ST12000NM0008) Buy	★★★★☆ 4.1	215
£41.36	£579.00	14 TB	HDD	3.5"	New	Toshiba 14TB N300 NAS 3.5â€™â€™ SATA Internal Hard Drive. 24/7 Operation, Supports 1-8 bay systems, 256MB Cache, 180TB/Year workload, 3yr Warranty (HDWG21EUZSVA). Buy	★★★★☆ 4.3	1,471
£41.36	£579.00	14 TB	HDD	3.5"	New	Toshiba N300 14TB Internal NAS Hard Drive, 3.5’’ SATA HDD, 7200 RPM, 24/7 Operation, Supports 1-8 bay systems, 128MB Cache, 180TB/Year workload, 3yr Warranty (HDEXZ12ZNA51F). Buy	★★★★☆ 4.3	283
£41.52	£249.09	6 TB	HDD	3.5"	New	Western Digital WD60PURZ - HDD Int 6TB Purple SATA 3.5 INCH Buy	★★★★★ 5.0	3
£41.66	£249.98	6 TB	HDD	3.5"	New	Seagate IronWolf, 6 TB internal Hard Drive, NAS HDD, 3.5 Inch, 5400 U/Min, CMR, 64 MB Cache, SATA 6 GB/s, 3 Years Rescue Service, Modellnr.: ST6000VN006 Buy	★★★★☆ 4.3	1,556
£41.67	£499.99	12 TB	HDD	3.5"	New	Toshiba N300 12TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 Gb/s 7200 RPM 256 MB Cache - HDWG21CXZSTA Buy	★★★★☆ 4.4	973
£41.67	£250.00	6 TB	HDD	3.5"	New	Seagate IronWolf Pro, 6 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage, 3 year Rescue Services (ST6000NT001) Buy	★★★★☆ 4.2	166
£41.67	£250.00	6 TB	HDD	3.5"	New	Seagate 6TB SkyHawk Internal Surveillance Drive \| SATA (ST6000VXZ09)100+ bought last month Buy	★★★★½ 4.5	3,296
£41.67	£250.00	6 TB	HDD	3.5"	New	Seagate 6TB IronWolf Internal NAS Hard Drive \| SATA 6 Gb/s (ST6000VNZ06)100+ bought last month Buy	★★★★½ 4.6	8,564
£41.67	£499.99	12 TB	HDD	3.5"	New	Toshiba N300 12TB Internal NAS Hard Drive, 3.5’’ SATA HDD, 7200 RPM, 24/7 Operation, Supports 1-8 bay systems, 128MB Cache, 180TB/Year workload, 3yr Warranty (HDEXZ13ZNA51F). Buy	★★★★☆ 4.3	283
£41.75	£167.00	4 TB	HDD	3.5"	New	Western Digital 4 TB Desktop Hard Drive - Blue Buy	★★★★½ 4.6	6,686
£41.80	£125.39-1.0% 24h	3 TB	HDD	3.5"	New	Western Digital RE 3TB SAS Hard Drive – 3.5 "Hard Drives (3000go, 3000 GB, 7200 rpm, SAS, 32MB) Buy	★★★★★ 5.0	1
£42.00	£168.00	4 TB	HDD	3.5"	New	Seagate Skyhawk 4 TB, Video Internal Hard HDD – 3.5", SATA 6Gb/s, 256MB Cache, for DVR NVR Security Camera System, with in-house Rescue Services (ST4000VX016)Used £158.40 · £39.60/TB Buy	★★★★☆ 4.4	1,326

3.5" drives: the best value per terabyte

3.5" is the standard desktop and NAS hard drive size, and consistently gives the lowest cost per terabyte on the whole site. The table above ranks every 3.5" drive by real £/TB.

Desktop internal: the cheapest bulk storage available — ideal for backups, media libraries and archives.
NAS-rated: WD Red Plus/Pro, Seagate IronWolf, Toshiba N300 — built for 24/7 multi-drive use.
Renewed enterprise: Seagate Exos and WD Ultrastar pulls often show the single lowest £/TB on the site at large capacities — see what to check first.

If you need portability instead, browse 2.5" drives or ready-made external drives.

Frequently asked questions

How does disks.co.uk rank 3.5" drives?

We rank every 3.5" drives by real cost per terabyte (£/TB) — the live Amazon.co.uk price divided by capacity — so the best value appears at the top. Prices refresh several times a day from Keepa, with 24-hour movement and all-time-low flags.

What is the cheapest 3.5" drives right now?

The top of the table shows the cheapest 3.5" drives by £/TB. Prices update daily, so check back for new all-time lows.

How do I choose the right 3.5" drives?

Compare £/TB for the capacity you need, check the price history for a genuine deal, and weigh up speed and warranty. Our buying guides explain the trade-offs.

Cheapest 3.5" drives ranked by price per terabyte

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3.5" drives: the best value per terabyte

Frequently asked questions

How does disks.co.uk rank 3.5" drives?

What is the cheapest 3.5" drives right now?

How do I choose the right 3.5" drives?