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Seagate

Seagate Expansion 12TB Portable HDD

Seagate Expansion 12TB Portable HDD
seagate-expansion12TBUSB 3.0Portable-External
No current price
newNot available
This offer: sold by vCloud Choice · Amazon says New / Unknown
Price updated
Price accurate as of Nov 3, 2026, 12:19 AM
No current offer

The Seagate Expansion 12TB Portable HDD is a 12TB USB 3.0 External-HDD in new condition. It has no current offer on Amazon. The in-stock alternatives nearest its capacity are listed below.

In stock instead - nearest to 12TB

6 in-stock listings · this listing has no current offer on Amazon · ranked by live cost per tb, refreshed about once a day

Model context

Part of the Seagate line we track.

Quick Verdict

The Seagate Expansion 12TB Portable HDD is a 12TB USB 3.0 enterprise drive - Verify recording technology before use in RAID. New unit with full manufacturer warranty.

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Specifications

Capacity12TB
Form FactorPortable-External
InterfaceUSB 3.0
Recording Tech—
Sector Size—
Workload Rating—
Warranty—
ASINB093BSR3H4
Market context

We do not have enough in-stock comparators of this type today to place this price against the rest of the market. The category page below ranks everything we do have.

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 12TB drive we track →Cheapest per terabyte, all categories →

Also appears in

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Frequently Asked Questions

Not right now: Amazon shows no current offer for ASIN B093BSR3H4. The in-stock alternatives nearest its 12TB capacity are on this page, ranked by live price.

This listing (Seagate Expansion 12TB Portable HDD, ASIN B093BSR3H4) 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 high-capacity 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
12TB 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 6 hours for 12TB. 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 12TB 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.