Seagate IronWolf vs IronWolf Pro
Seagate sells two NAS drive tiers under the IronWolf brand: the standard IronWolf for home and small-office NAS builds, and the IronWolf Pro for heavier multi-bay and SMB workloads. Both are CMR, both include rotational vibration sensors, and both support IronWolf Health Management on compatible NAS hardware. The real differences are in warranty length, workload rating, and price — so the right choice depends on how hard you plan to push your NAS.
Key differences at a glance
IronWolf: 3-year warranty, 180 TB/year workload, 1–8 bays, includes 1-year Rescue Data Recovery. IronWolf Pro: 5-year warranty, 300 TB/year workload, 1–24 bays, includes 3-year Rescue Data Recovery, and slightly higher sustained transfer rates. Pro models run the same AgileArray firmware but are binned and tested for heavier duty cycles. For a home NAS running light workloads, standard IronWolf is usually the better value. For multi-user, always-on, or RAID-heavy builds, IronWolf Pro pays for itself in warranty coverage alone.
Prices updated hourly from Amazon US and UK. All links go directly to the retailer. Details.
Seagate IronWolf — Current Prices
Standard IronWolf NAS drives sorted by price per terabyte. 3-year warranty, 180 TB/year workload rating, and IronWolf Health Management support.
Seagate IronWolf ST4000VN008 4TB Internal Hard Drive, NAS HDD, 3.5 Inch, 5900 rpm, CMR, 64 MB Cache, SATA 6 GB/s, Silver, 3 Years Data Rescue Service
Seagate IronWolf 14TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST14000VN0008)
Seagate IronWolf 12TB, NAS, Internal Hard Drive, CMR, 3.5 Inch, SATA, 6GB/s, 7.200 RPM, 256MB Cache, for RAID Network Attached Storage, Data Rescue Services, FFP (ST12000VNZ008)
Seagate IronWolf ST6000VN001 6 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Storage System Device Supported - 7200rpm - 256 MB Buffer
Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008)
Seagate 10 TB IronWolf NAS 3.5 Inch Hard Drive ST10000VN0008 (SATA 6 Gb/s/256 MB/7200 RPM)
Seagate 6TB IronWolf ST6000VN001 5400RPM 256MB NAS
IronWolf ST12000VN0008 Hard Drive
Seagate IronWolf Pro — Current Prices
IronWolf Pro NAS drives sorted by price per terabyte. 5-year warranty, 300 TB/year workload, designed for up to 24-bay NAS and rackmount systems.
Seagate IronWolf Pro, 14 TB, NAS Internal Hard Drive, CMR 3.5 Inch, SATA 6 Gb/s 7,200 RPM, 256 MB Cache, for RAID Network Attached Storage, 3 years Rescue Services, FFP (ST14000NE0008)
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, 3 year Rescue Services (ST14000NT001)
Seagate IronWolf Pro 14 TB NAS RAID Internal Hard Drive - 7,200 RPM SATA 6 Gb/s 3.5-inch (ST14000NE0008)
Seagate IronWolf Pro 24TB, NAS Internal Hard Drive, 3.5 Inch, 7.200 U/Min, CMR, 256MB Cache, SATA 6 GB/S, incl. Datat Rescue Service (ST24000NTZ02)
Seagate IronWolf Pro 3.5-inch 18TB Internal Hard Disk HDD CMR 3.5 Inch Data Recovery ST18000NT001 6Gb/s 256MB 7200 rpm 24 Hour Operation PC
Seagate IronWolf Pro 18TB ST18000NE000 internal hard drive 3.5" 18000 GB Serial ATA III
Seagate IronWolf Pro ST20000NE00 RV sensor 8.9 cm (3.5") NAS 20TB HDD (CMR)
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
CMR IronWolf Drives — Both Tiers
All CMR IronWolf models across standard and Pro lines. CMR is essential for RAID and ZFS arrays where SMR write behaviour causes rebuild issues.
Why this matters: Both IronWolf and IronWolf Pro use CMR at most capacity points, but verifying the CMR tag ensures you avoid any entry-level SMR exceptions. For multi-bay NAS builds running RAID or ZFS, CMR is non-negotiable.
Seagate IronWolf ST4000VN008 4TB Internal Hard Drive, NAS HDD, 3.5 Inch, 5900 rpm, CMR, 64 MB Cache, SATA 6 GB/s, Silver, 3 Years Data Rescue Service
Seagate IronWolf 14TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST14000VN0008)
Seagate IronWolf 12TB, NAS, Internal Hard Drive, CMR, 3.5 Inch, SATA, 6GB/s, 7.200 RPM, 256MB Cache, for RAID Network Attached Storage, Data Rescue Services, FFP (ST12000VNZ008)
Seagate IronWolf Pro, 14 TB, NAS Internal Hard Drive, CMR 3.5 Inch, SATA 6 Gb/s 7,200 RPM, 256 MB Cache, for RAID Network Attached Storage, 3 years Rescue Services, FFP (ST14000NE0008)
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, 3 year Rescue Services (ST14000NT001)
Seagate IronWolf Pro 14 TB NAS RAID Internal Hard Drive - 7,200 RPM SATA 6 Gb/s 3.5-inch (ST14000NE0008)
Seagate IronWolf Pro 24TB, NAS Internal Hard Drive, 3.5 Inch, 7.200 U/Min, CMR, 256MB Cache, SATA 6 GB/S, incl. Datat Rescue Service (ST24000NTZ02)
Seagate IronWolf Pro 3.5-inch 18TB Internal Hard Disk HDD CMR 3.5 Inch Data Recovery ST18000NT001 6Gb/s 256MB 7200 rpm 24 Hour Operation PC
High-Capacity IronWolf (12 TB+)
Large-capacity IronWolf and IronWolf Pro drives for dense NAS builds. At 12 TB and above, both tiers use helium-sealed designs for lower power and heat.
Seagate IronWolf ST4000VN008 4TB Internal Hard Drive, NAS HDD, 3.5 Inch, 5900 rpm, CMR, 64 MB Cache, SATA 6 GB/s, Silver, 3 Years Data Rescue Service
Seagate IronWolf 14TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST14000VN0008)
Seagate IronWolf 12TB, NAS, Internal Hard Drive, CMR, 3.5 Inch, SATA, 6GB/s, 7.200 RPM, 256MB Cache, for RAID Network Attached Storage, Data Rescue Services, FFP (ST12000VNZ008)
Seagate IronWolf Pro, 14 TB, NAS Internal Hard Drive, CMR 3.5 Inch, SATA 6 Gb/s 7,200 RPM, 256 MB Cache, for RAID Network Attached Storage, 3 years Rescue Services, FFP (ST14000NE0008)
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, 3 year Rescue Services (ST14000NT001)
Seagate IronWolf Pro 14 TB NAS RAID Internal Hard Drive - 7,200 RPM SATA 6 Gb/s 3.5-inch (ST14000NE0008)
Seagate IronWolf Pro 24TB, NAS Internal Hard Drive, 3.5 Inch, 7.200 U/Min, CMR, 256MB Cache, SATA 6 GB/S, incl. Datat Rescue Service (ST24000NTZ02)
Seagate IronWolf Pro 3.5-inch 18TB Internal Hard Disk HDD CMR 3.5 Inch Data Recovery ST18000NT001 6Gb/s 256MB 7200 rpm 24 Hour Operation PC
Related Buying Guides
Best NAS Hard Drives
Compare NAS hard drive prices from Seagate IronWolf and WD Red. CMR drives ranked by price per TB for Synology, QNAP, TrueNAS, and Unraid builds.
WD Red Plus vs Seagate IronWolf
Compare WD Red Plus and Seagate IronWolf NAS hard drives by price per TB. Live prices, CMR options, and capacity breakdowns to help you pick the right NAS drive.
WD Red Pro vs Seagate IronWolf Pro
Compare WD Red Pro and Seagate IronWolf Pro NAS hard drives by price per TB. Live prices for premium NAS builds, multi-bay servers, and SMB storage.
Best HDD Deals Right Now
Live hard drive deals ranked by price per terabyte. New and refurbished HDDs on Amazon US & UK — prices checked every hour so you never overpay.