DatacenterDisk

Seagate 4TB SAS Enterprise HDD - Prices

5 Seagate 4TB SAS hard drives tracked. Prices from $18.60/TB. Updated about once a day.

Buy or Skip?
✓ Buy if: you want 53% below-average pricing on 4TB Seagate drives. These are datacenter pulls - verify SMART data on arrival.
✗ Skip if: you require new-only drives for production RAID or need guaranteed OEM warranty - consider new alternatives.
Buy on Amazon $74.39
Best $/TB
$18.60
Drives
3
Condition
New + Refurb

At $18.60/TB, Seagate 4TB SAS drives are $9.94/TB cheaper than the 4TB SAS category average of $28.54/TB — strong value at this capacity.

Seagate 4TB SAS - should you buy?

Seagate 4TB SAS drives include the Exos X and Enterprise Capacity series, rated 550TB/year for 24/7 datacenter operation. Starting at $18.60/TB.

Condition
Capacity
3 of 3 part numbers
  • $18.60/TB$74.39
    Seagate Enterprise Capacity 4TB SAS 12G 512n
    ST4000NM0025
    4TB · SAS-12G
    Refurb
    Buy on Amazon
  • $49.75/TB$199.00
    Seagate Constellation ES 4TB SAS 6G
    ST4000NM0023
    4TB · SAS-6G
    New
    Buy on Amazon
  • $51.25/TB$205.00
    Seagate Enterprise Capacity 4TB SAS 12G 512n
    ST4000NM0025
    4TB · SAS-12G
    New
    Buy on Amazon

Guides for this capacity: fanxiang 4tb for gta 6 · skyhawk ai 32tb vs 24tb · wd purple pro 26tb vs 24tb · seagate exos 25tb vs 24tb · synology hat5320 24tb vs ultrastar hc590 · hpe 26tb vs 24tb · dell 32tb vs 24tb hard drive · dell 24tb sas vs sata · the HDD price forecast · fill a NAS at today's prices

Drive Specifications

Seagate Enterprise Capacity 4TB SAS 12G 512n
ST4000NM0025
REFURB
This offer: sold by Multi-Com Computers (All Serial Numbers Recorded) · Amazon says Used / LikeNew
$18.60/TB
$74.39 total
Capacity
4TB
Interface
SAS-12G
Form Factor
3.5"
Recording
Not sourced
RPM
7,200
Cache
128MB
Sector Size
512n
Workload
550TB/yr
Warranty
5 years
Seagate Constellation ES 4TB SAS 6G
ST4000NM0023
This offer: sold by ONLINE USA OUTLET · Amazon says New / Unknown
$49.75/TB
$199.00 total
Capacity
4TB
Interface
SAS-6G
Form Factor
3.5"
Recording
Not sourced
RPM
7,200
Cache
128MB
Sector Size
512e
Workload
550TB/yr
Warranty
—
Seagate Enterprise Capacity 4TB SAS 12G 512n
ST4000NM0025
This offer: sold by ONLINE USA OUTLET · Amazon says New / Unknown
$51.25/TB
$205.00 total
Capacity
4TB
Interface
SAS-12G
Form Factor
3.5"
Recording
Not sourced
RPM
7,200
Cache
128MB
Sector Size
512n
Workload
550TB/yr
Warranty
5 years

Other Seagate SAS capacities

1TB1.2TB3TB4TB6TB8TB10TB12TB16TB20TB

Other brands at 4TB SAS

DellHGSTHPSeagate

Frequently Asked Questions

3 in-stock listings out of 5 tracked; the cheapest is the Seagate Enterprise Capacity 4TB SAS 12G 512n at $74.39 ($18.60/TB). The table on this page is the live ranking.

Both are in stock: 2 new and 1 recertified or used. The cheapest new is the Seagate Constellation ES 4TB SAS 6G at $199.00, the cheapest recertified or used the Seagate Enterprise Capacity 4TB SAS 12G 512n at $74.39 - a 63% shelf gap between two different models, not a like-for-like discount. New carries the manufacturer's warranty; recertified a reseller's.

None of the 5 tracked listings (including the Seagate Enterprise Capacity 4TB SAS 12G 512n) has a manufacturer-sourced recording value yet, so this page states none - an unsourced drive is never assumed CMR.

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. Refurb units offer strong value for non-critical NAS.
💾
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
✓ Excellent fit
4TB SAS drives are ideal for backup targets. Dual-port SAS suits dual-path backup infrastructure.
🏗️
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. SAS dual-port suits HA cluster shared 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. Critical for refurb drives — refuse any with reallocated sectors > 0.
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 2 hours for 4TB. 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 4TB per drive, budget for replacements before failures occur.

Troubleshooting Guide

Cause: HBA not initialized, SAS expander issue, cable fault, or incompatible controller.
Fix: Verify HBA firmware. Check SAS topology with sas2ircu or StorCLI. Test with known-good cable. Confirm drive is SAS not SATA.