Current-generation HAMR drives from Seagate (30TB+ Mozaic 3+ platform). The 30TB tier is the highest capacity in mass production as of mid-2026. Premium pricing reflects HAMR's manufacturing complexity and early adoption position.
| # | $/TB | Drive | Interface | Cond | Total | |
|---|---|---|---|---|---|---|
| 1 | $40.00 | SeagateExos M 30TB SATA HAMR Enterprise | SATA-6G | New | $1200 | Buy |
At the 30TB capacity tier, the refurbished market typically prices 20-30% below new drive equivalents. Check the live table above for the current new and refurb cheapest options at this capacity. For backup repositories, RAID 6 capacity tiers, and any deployment with redundancy, refurbished is the right answer. For primary production storage and single-drive deployments, the new drive premium buys peace of mind through full manufacturer warranty and zero accumulated wear.
Established refurbished resellers like MDD MaxDigitalData source from decommissioned hyperscale datacenters and provide 3-5 year reseller warranties at this capacity. Run smartctl on arrival, deploy in RAID 6 with at least one hot spare, and monitor SMART attributes continuously.
Density-optimized hyperscale and enterprise deployments. The 30TB HAMR tier suits buildouts where rack space and bay count are at premium. Pilot deployments in non-critical arrays recommended given the technology's commercial newness.
RAID guidance: RAID 6 with hot spare. At this capacity, consider triple-parity options (RAIDZ3, RAID 7) for hyperscale-style high-reliability deployments. Rebuild windows can reach 48-96 hours. Use the RAID Capacity Planner to calculate exact usable capacity for any configuration at this capacity.
Power draw: 30TB enterprise SATA drives typically draw 6-9W active, 4-5W idle. Six 30TB drives in a NAS array consume approximately 35-55W active — modest by enterprise standards but meaningful for home electricity costs over years of operation.
When to size up: If your projected capacity growth over the next 24 months would exceed the array's usable capacity at 30TB drives, sizing up one tier (34TB or larger) defers the next expansion cycle and typically improves $/TB. Sizing up at this tier is usually justified for new deployments.
30TB is the cutting edge of mass-production HDD capacity in mid-2026. Seagate ships 30TB drives on the Mozaic 3+ HAMR platform — the first commercial Heat-Assisted Magnetic Recording drives at this capacity. The 30TB tier carries an early-adopter premium reflecting HAMR's manufacturing complexity. Pilot deployments in non-critical arrays are recommended before broad rollout. Appropriate for hyperscale and density-optimized enterprise deployments where rack space and bay count are at a premium and the per-TB cost is justified by the density benefits.
Concrete capacity examples for a single 30TB drive, before RAID overhead and assuming typical file sizes:
Real-world usable capacity in a RAID 6 array is lower than the raw drive capacity — see the RAID section below for usable capacity examples at common drive counts.
Usable capacity examples for 30TB drives at common deployment sizes, using RAID 5 (single parity, one drive of overhead) and RAID 6 (dual parity, two drives of overhead):
| Drives | Raw | RAID 5 usable | RAID 6 usable |
|---|---|---|---|
| 4 drives | 120TB | 90TB ⚠ | 60TB |
| 6 drives | 180TB | 150TB ⚠ | 120TB |
| 8 drives | 240TB | 210TB ⚠ | 180TB |
| 10 drives | 300TB | 270TB ⚠ | 240TB |
| 12 drives | 360TB | 330TB ⚠ | 300TB |
At 30TB per drive, single-parity RAID 5 is no longer safe in production. The probability of an unrecoverable read error during the long rebuild window from a 30TB failed drive is high enough that a second failure during rebuild becomes statistically likely. RAID 6 (dual parity) is mandatory at this capacity — the second parity drive absorbs URE-driven read failures during rebuild and prevents data loss.
Rebuild time for a 30TB drive in a RAID 6 array typically runs 90-150 hours at typical hardware-accelerated rebuild speeds (assuming the array is not heavily loaded with production traffic during rebuild). Throughout the rebuild window, the array operates at degraded performance and reduced redundancy. Hot spare drives that automatically begin rebuild on first failure shrink the exposure window to minutes rather than hours. Use the RAID Capacity Planner to model rebuild times for your specific drive count and array configuration.
Enterprise 30TB SATA hard drives typically draw 6-10W during active read/write and 4-5W at idle. For a 6-drive array running 24/7 with mixed activity, expect approximately 35-55W of continuous power draw plus the host system's overhead. At typical US residential electricity rates of $0.16/kWh, a 45W array costs about $63 per year in electricity; at commercial rates of $0.10/kWh, about $39 per year.
Fewer high-capacity drives dramatically reduce power consumption per terabyte stored. Six 30TB drives delivering 120TB usable in RAID 6 consume the same power as six 4TB drives delivering only 16TB usable — but at 750% of the capacity per watt. For datacenter and homelab deployments where electricity is a meaningful operating cost, sizing up to 30TB drives delivers better power efficiency per TB stored alongside the $/TB advantage. The TCO Calculator models the full 5-year power cost for any drive configuration.
Enterprise hard drive prices have risen approximately 46-50% since September 2025, driven by AI infrastructure demand absorbing hyperscale HDD production, US import tariffs adding 10-13% to landed costs, and NAND shortages forcing buyers from SSD to HDD for capacity tiers. The 30TB capacity has been particularly affected because this tier is heavily consumed by hyperscale AI training storage — drives that previously sold in the spot market at competitive prices are now committed to hyperscale buyers. Read the full analysis in Hard Drive Prices Up 50% in 2026.
Most storage analysts expect elevated pricing to persist through 2026 and into 2027. New NAND capacity takes 2-3 years to qualify and ramp; hyperscale AI buildouts are not expected to moderate before late 2026. For 30TB buyers in particular, the practical procurement advice is to purchase current requirements at today's prices rather than deferring in anticipation of price normalization. Monitor live $/TB on this page and on the cheapest per TB tracker for the current best deal at this capacity.
As of the most recent refresh, the cheapest 30TB hard drive on DatacenterDisk is the Seagate Exos M 30TB SATA HAMR Enterprise at $40.00/TB ($1199.99 total). Prices update every 2 hours; check the live table above for the current winner.
30TB is enough for a serious Plex library: roughly 350 1080p films or 42 4K HDR films at typical sizes after RAID overhead. Most multi-drive Plex deployments use 30TB drives in RAID 6 for usable capacity in the 50-200TB range.
All current 30TB enterprise and NAS-branded hard drives use Conventional Magnetic Recording (CMR) and are safe for RAID arrays. SMR is only found in some smaller capacity (≤8TB) consumer drives. Both Seagate Exos and WD Ultrastar at 30TB are CMR.
New 30TB drives carry full manufacturer warranties (typically 5 years for enterprise) and fresh workload ratings. Refurbished 30TB drives from established resellers cost 20-30% less with 3-5 year reseller warranties. Refurbished is appropriate for RAID 6 backup and capacity tiers; new for primary production storage.
Live market shows 30TB drives starting at $40.00/TB ($1199.99 total for the cheapest in-stock listing). For new enterprise CMR drives at this capacity, expect $52-60/TB depending on brand and series. The DatacenterDisk live tracker has the most current pricing.
For NAS deployments at 30TB, the best balance of $/TB and NAS-specific features comes from Seagate IronWolf, WD Red Plus, or Toshiba N300 (consumer NAS) and Seagate IronWolf Pro or WD Red Pro (business NAS). For maximum $/TB value in production deployments, Seagate Exos X30 and WD Ultrastar at 30TB are enterprise equivalents at lower cost.