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Buy Enterprise Storage for Sale: Data-Center HDDs and NVMe for AI

Buy enterprise storage at MillionMiner for AI training data, model weights and blockchain nodes. Available drives include Seagate 16TB Exos and Western Digital 18TB Ultrastar helium HDDs, both CMR-recorded, plus NVMe SSDs, each tested and securely erased before resale and rated around 2.5 million hours MTBF at a 550TB annual workload.

Every drive ships free worldwide DDP, so the checkout price is the final landed cost. Buy on its own, or pair it with GPUs and a server from our AI Hardware range for a complete build. Shop enterprise storage below.

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Seagate Exos 16TB Enterprise HDD (Clean IDC Pull)

Seagate

In Stock

Seagate Exos 16TB Enterprise HDD (Clean IDC Pull)

Clean IDC Pulls (Enterprise-Class) 16 TB
Starting from

$508.50
Western Digital Ultrastar 18TB Enterprise HDD (Clean IDC Pull)

Western Digital

In Stock

Western Digital Ultrastar 18TB Enterprise HDD (Clean IDC Pull)

Clean IDC Pulls (Enterprise-Class) 18 TB
Starting from

$395.50

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Enterprise Storage

Enterprise HDDs, NVMe SSDs & Data Centre Storage Solutions

AI training pipelines, blockchain node operators, data archival, and high-density NAS all demand storage that performs reliably at scale. We stock enterprise-grade hard drives and SSDs from Seagate, Western Digital, and Samsung — from 16 TB+ nearline HDDs designed for 24/7 data centre operation to high-endurance NVMe U.2 and E1.S SSDs optimised for AI checkpoint I/O and database workloads. Whether you're building a petabyte-scale storage cluster or stocking a single high-capacity server, we supply the hardware.

Max HDD Capacity

32 TB

Seagate EXOS X — single drive

Enterprise NVMe BW

14 GB/s

Samsung PM9A3 U.2 sequential read

EXOS X18 MTBF

2.5M hrs

Rated for 550 TB/yr workload

SSD Endurance (DWPD)

3–10 DWPD

Mixed-use to write-intensive NVMe

Enterprise HDD Lineup

Nearline & High-Capacity HDDs We Stock

Seagate EXOS X20

20 TB

285 MB/s sustained. 7,200 RPM. SATA 6 Gb/s or SAS 12 Gb/s. 550 TB/yr workload rating. 2.5M hr MTBF. The standard for high-density nearline NAS and JBOD arrays.

Seagate EXOS X22

22 TB

Helium-sealed 9-disk CMR. 285 MB/s sustained. 2.5M hr MTBF. 550 TB/yr. OEM-grade drive for dense Ceph and Lustre storage clusters.

Seagate EXOS X24

24 TB

HAMR (Heat-Assisted Magnetic Recording) technology. Higher areal density than CMR at comparable power draw. Forward-compatible with SMR controllers.

WD Gold 20 TB

20 TB

272 MB/s sustained. 7,200 RPM. SATA 6 Gb/s. 2.5M hr MTBF. 550 TB/yr. Western Digital enterprise line for storage arrays, NAS, and surveillance systems.

WD Ultrastar DC HC650

20 TB

HelioSeal helium design. Available in SATA and SAS 12G. Optimised for cloud-scale and hyperscale density deployments. ISE (Instant Secure Erase) option.

Seagate IronWolf Pro 20 TB

20 TB

NAS-optimised enterprise HDD. AgileArray firmware for vibration compensation in multi-bay enclosures. 300 TB/yr workload rating. 3-year data recovery service included.

Seagate SkyHawk AI 16 TB

16 TB

Optimised for AI-enabled DVR and video surveillance systems. 16-bay NAS compatible. 550 TB/yr rating. ImagePerfect firmware reduces dropped frames under concurrent stream load.

The Case for High-Capacity HDDs

Why 16–24 TB Nearline HDDs Are the Backbone of AI Storage Infrastructure

AI training requires vast amounts of data. GPT-4 class models trained on trillions of tokens; Llama 3 pre-trained on over 15 trillion tokens. Even at aggressive compression, a 15T-token dataset occupies 15–30 TB in raw form before tokenisation, and full training pipelines require multiple redundant copies of the dataset available for fast iteration. At this scale, high-capacity enterprise HDDs are not a budget compromise — they are the only economically sensible medium for petabyte-scale training data lakes.

The 20–24 TB nearline HDD tier from Seagate (EXOS X series) and Western Digital (Ultrastar DC, WD Gold) delivers 270–285 MB/s sustained sequential read throughput, a 2.5-million-hour MTBF rating, and a 550 TB/year workload rating — meaning these drives are built for continuous 24/7 data centre operation. A RAID 6 array of 12 × 20 TB EXOS X20 drives provides 200 TB of usable capacity at ~3.2 GB/s aggregate read bandwidth, sufficient to feed an H100 GPU cluster during training data prefetch.

For cold and warm storage tiers — model checkpoints, archived datasets, backups — high-capacity HDDs deliver a cost per terabyte that NVMe SSDs cannot match. A hybrid storage architecture pairing NVMe SSDs for hot I/O (active training batches, KV cache) with high-capacity HDDs for warm/cold data (checkpoints, datasets, logs) is the standard pattern for cost-effective AI infrastructure at any scale.

Enterprise NVMe SSDs

High-Endurance NVMe for Checkpointing, Databases & OS Boot

Enterprise NVMe SSDs are fundamentally different from consumer M.2 drives. They are designed around U.2 (2.5" SFF-8639) or E1.S / E3.S form factors for hot-swap deployment in server bays, carry 3–10 Drive Writes Per Day endurance ratings for sustained write-intensive workloads, offer power-loss protection capacitors to prevent data corruption during unexpected shutdowns, and ship with 5-year warranties.

For AI infrastructure, enterprise NVMe is critical at several tiers. GPU checkpointing during long training runs writes 10–100 GB every few minutes — a high-endurance write-intensive NVMe array ensures checkpoint I/O does not stall training. Operating system and container image storage for server nodes benefits from the consistent low-latency read performance of enterprise NVMe even under concurrent workload. KV-cache storage for LLM inference can offload from GPU HBM to NVMe when serving very long context lengths.

We stock Samsung PM9A3 (PCIe 4.0 U.2), PM983 (SATA TLC for cost-efficient read-heavy workloads), Seagate Nytro 3530/5530 series, and Micron 7450 Pro/Max for mixed-use and write-intensive deployments. All drives are enterprise-grade, sealed, and covered by manufacturer warranties.

Enterprise NVMe SSD Overview

Key Models & Specifications

Samsung PM9A3

U.2 PCIe 4.0 — 1.92–15.36 TB

Read: 6,800 MB/s. Write: 4,000 MB/s. 1 DWPD. Mixed-use workloads, AI checkpoint storage. PLP capacitor. 5-year warranty.

Samsung PM983

U.2 SATA TLC — 960 GB–7.68 TB

Read: 560 MB/s. Write: 530 MB/s. 1.3 DWPD. Cost-efficient option for read-heavy workloads, OS boot arrays, and logging tiers.

Seagate Nytro 5530

E1.S PCIe 5.0 — 1.6–12.8 TB

Read: 14,000 MB/s. Write: 7,000 MB/s. 1 DWPD. Next-gen PCIe 5.0 form factor for ultra-dense 1U/2U server configurations.

Seagate Nytro 3530

U.2 PCIe 3.0 — 1.6–12.8 TB

Read: 3,400 MB/s. Write: 2,500 MB/s. 3 DWPD mixed-use. Proven enterprise workhorse for database and inference storage tiers.

Micron 7450 Pro

U.2 PCIe 4.0 — 960 GB–15.36 TB

Read: 6,800 MB/s. Write: 5,300 MB/s. 1 DWPD. Strong write performance with PLP. Qualified for Ceph, MinIO, and Lustre deployments.

Micron 7450 Max

U.2 PCIe 4.0 — 400 GB–6.4 TB

Read: 6,800 MB/s. Write: 5,800 MB/s. 3 DWPD. High-endurance for write-intensive workloads — log-structured storage, NVMe-oF, OLTP databases.

Storage Tiering

HDD vs NVMe SSD: Matching the Right Storage to Each Workload

Effective AI and enterprise storage architectures always combine multiple tiers. Here is how to think about it.

Hot Storage — NVMe SSD

  • Active training batch prefetch cache
  • Model checkpoint I/O during training runs
  • OS, container images & model weights (active)
  • KV cache offload for long-context LLM inference
  • High-IOPS OLTP databases & NVMe-oF

NVMe delivers microsecond latency and GB/s throughput, keeping GPUs fed. Enterprise U.2 drives with power-loss protection are mandatory — consumer M.2 SSDs are not rated for 24/7 data centre use.

Warm Storage — Nearline HDD

  • Full training dataset storage (TB to PB scale)
  • Saved model checkpoints (historical archive)
  • Multi-version model weight storage
  • Blockchain full-node storage
  • Video, audio & multimodal training data

High-capacity nearline HDDs (20–24 TB) provide the lowest cost per terabyte at data-centre reliability. Sequential throughput of 270–285 MB/s per drive scales linearly in RAID or JBOD arrays.

Cold / Archive — High-Cap HDD

  • Backup copies of datasets & checkpoints
  • Regulatory & compliance data retention
  • Old model versions & experiment logs
  • Training data snapshots before preprocessing
  • Long-term surveillance & sensor data

The coldest tier prioritises cost and density over IOPS. High-capacity HDDs in JBOD enclosures behind a Ceph or S3-compatible object store deliver the most economical petabyte-scale storage available.

FAQ

Frequently Asked Questions

Enterprise HDDs (Seagate EXOS, WD Gold/Ultrastar) are rated for continuous 24/7 operation with a 550 TB/year workload limit, compared to 180 TB/year for NAS drives and 55 TB/year for desktop drives. They carry 2.5-million-hour MTBF ratings, helium sealing on drives above 16 TB for reduced internal resistance, vibration sensors for multi-drive array stability, and SAS options in addition to SATA. Consumer drives used in servers fail disproportionately quickly under continuous high-load operation.

CMR (Conventional Magnetic Recording) writes tracks without overlap — it delivers consistent write performance and is fully compatible with all RAID levels and NAS firmware. SMR (Shingled Magnetic Recording) overlaps tracks to increase areal density but requires rewriting overlapping tracks on updates, causing write speed degradation under sustained random writes. For server and NAS use, always buy CMR. SMR is acceptable only for archival drives that are written once and read many times. All enterprise EXOS and WD Gold drives listed here are CMR.

A 10 TB dataset (modest for language model pre-training) fits on a single 20 TB drive with room for preprocessing artifacts. A 100 TB dataset requires 5–6 × 20 TB drives in a RAID or JBOD configuration. Petabyte-scale datasets require dozens of drives in JBOD enclosures managed by a distributed filesystem like Ceph, Lustre, or BeeGFS. As a rule, plan for 2× the raw dataset size to accommodate at least one full backup copy plus preprocessing overhead.

DWPD (Drive Writes Per Day) measures endurance as the number of times the SSD's full capacity can be written each day over the drive's warranty period (typically 5 years). A 4 TB SSD rated at 1 DWPD can sustain 4 TB of writes daily for 5 years. Mixed-use SSDs (1 DWPD) are suitable for checkpoint storage and read-heavy workloads. Write-intensive SSDs (3–10 DWPD) are designed for databases, logging, and NVMe-oF workloads with constant high write pressure.

Technically yes, but not advisably. Consumer M.2 NVMe SSDs lack power-loss protection (PLP) capacitors, meaning a sudden power cut can corrupt in-flight data. They are rated for 0.3–0.6 DWPD rather than 1–10, meaning they will wear out far faster under server workloads. They use M.2 form factor rather than hot-swappable U.2 sleds, making replacement in a live server difficult. For test environments or low-write workloads this is acceptable; for production AI infrastructure, always use enterprise U.2 NVMe.

Yes. Volume pricing is available for orders of 10 or more drives of the same model. Contact our sales team with your required model, capacity, and quantity. We supply data centres, system integrators, and enterprise IT departments with pallet-quantity storage procurement.

Our team is available 24/7 via WhatsApp (+49 176 777 888 33), email and phone. For large storage orders we recommend contacting us directly to confirm stock, discuss logistics, and obtain volume pricing before placing an order.

Ready to Scale Your Storage?

Browse our full range of enterprise HDDs and NVMe SSDs above. Whether you need a single high-capacity drive for a NAS build or pallets of nearline HDDs for a petabyte-scale storage cluster, our team will match the right drive to your workload, RAID configuration, and budget.

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