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Seagate

Seagate BarraCuda 6TB ST6000DM003

ST6000DM003
BarraCudadesktop6TBSATA-6G3.5"
$41.50/TB
$249.00
newIn Stock
This offer: sold by CorteseInc · Amazon says New / Unknown
Price updated
Price accurate as of Nov 2, 2026, 07:19 PM
Buy on Amazon

The Seagate BarraCuda 6TB ST6000DM003 is a 6TB SATA-6G HDD in new condition. It is in stock at $249.00 - $41.50/TB.

Where this listing sits: every 6TB hard drive · 6TB SATA drives · Seagate 6TB SATA — each page is the live ranking for that slice of the catalogue.

Part number: ST6000DM003 — decoded, with sibling variants and the warranty check.

Same capacity, other options
DriveInterfaceCond$/TBPrice
Seagate BarraCuda 6TB ST6000DMZ03SATA-6GRefurb$36.67$220.04Buy on Amazon
Seagate IronWolf 6TB NAS ST6000VN0041SATA-6GRefurb$38.33$229.99Buy on Amazon
HGST HUS726060AL5210 6TB SAS 12GSAS-12GNew$41.50$249.00Buy on Amazon
HP 6TB SAS Midline LFF EnterpriseSAS-12GNew$42.41$254.45Buy on Amazon

All 6TB drives we track, ranked by cost per terabyte.

Model context

CMR or SMR? What we can and cannot source for this part number

Part of the Seagate line we track.

Quick Verdict

The Seagate BarraCuda 6TB ST6000DM003 is a 6TB SATA-6G enterprise drive at $41.50/TB - Verify recording technology before use in RAID. New unit with full manufacturer warranty.

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Specifications

Capacity6TB
Form Factor3.5"
InterfaceSATA-6G
Recording Tech—
RPM5400
Cache256MB
Sector Size—
Workload Rating—
Warranty—
ASINB075WX2TKM

Recording technology: not sourced. The document we cited for it no longer resolves and we found no archived copy, so we hold the answer for re-sourcing and do not state it.

Market context

Against every other drive we have an in-stock price for today, this one is cheaper per tb than 88% of them (213 of 243). The cheapest we can currently buy is $14.99/TB; the middle of the market is $38.33/TB.

Where the wider market has moved

These are third-party figures about the retail market as a whole, quoted and dated. They are not our own measurements and they do not describe this specific drive.

Compare against every 6TB drive we track →Cheapest per terabyte, all categories →Category price trends →
How it compares - 6TB SATA-6G
#1Seagate BarraCuda 6TB ST6000DM003THIS DRIVE
$28.33/TB
#2Seagate SkyHawk 6TB ST6000VX001
$31.67/TB
#3WD Red Pro 6TB WD6003FFBX
$33.33/TB
#4MDD 6TB SATA 6G 7200RPM 128MB Enterprise
$33.33/TB
#5WD Purple 6TB WD60PURX
$33.83/TB

Works in these NAS machines

TerraMaster (32 machines)
Vendor-listed
On TerraMaster's list - not recommended

Resolved against manufacturer compatibility lists we read and dated, capped at 4. Vendor-listed means the manufacturer names this exact part number; fit-verified is our own check of form factor, interface and recording technology against a published requirement. Neither is a guess, and a drive the registry cannot resolve shows nothing here rather than a maybe. How compatibility actually works

Also appears in

SATA hard drives
Price per terabyte
Best-of verdicts
Compatibility
Other pages
Hard drives by capacity
Brands

Frequently Asked Questions

Yes. At our last check it was $249.00 ($41.50 per terabyte at its 6TB capacity), sold new under ASIN B075WX2TKM. Amazon sets the final price at checkout.

This listing (ST6000DM003, ASIN B075WX2TKM) carries no renewed, recertified, refurbished or pulled claim in its title, and Amazon reports it as new. On this site that is what "new" means: sold as factory-new.

Use Case Scenarios

🏠
Home & SMB NAS
Building a mid-range NAS for media, backups and file sharing.
✓ Excellent fit
Verify CMR recording before using in RAID. New drives come with full warranty.
💾
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
✓ Excellent fit
6TB SATA drives are ideal for backup targets. SATA gives maximum $/TB for backup repositories.
🏗️
Virtualization Host Storage
VM images and snapshots on Proxmox, VMware or Hyper-V.
~ Good fit
Suitable for VM storage where workloads are not IOPS-intensive. SATA is fine for single-host VM storage. Consider NVMe cache for latency-sensitive VMs.

Maintenance & Troubleshooting

Maintenance Checklist

On installCheck SMART baseline on arrival
Run smartctl -a /dev/sdX and record: Reallocated_Sector_Ct, Power_On_Hours, Spin_Retry_Count. Establishes baseline for future comparison.
MonthlyRun SMART short self-test
smartctl -t short /dev/sdX — takes 1-2 minutes, catches most developing issues. Schedule during off-peak.
QuarterlyRun SMART long self-test
smartctl -t long /dev/sdX — full surface scan, takes 3 hours for 6TB. Any test failure is grounds for immediate replacement.
QuarterlyCheck RAID array health
Verify no degraded drives. A degraded array with no hot spare is one failure from data loss. Check mdstat or controller UI.
AnnuallyVerify drive firmware version
Check Seagate support site for firmware updates. Some versions have known bugs affecting integrity.
Every 3-5 yearsPlan proactive replacement
Enterprise HDDs have higher failure rates after year 4-5. At 6TB per drive, budget for replacements before failures occur.

Troubleshooting Guide

Cause: Loose SATA data or power cable, failed port, or drive not spinning up.
Fix: Reseat both cables. Try a different port. Listen for spin-up sound. Test with a known-good cable.