DatacenterDisk
Seagate

Exos X24 24TB SATA

ST24000NM000H
Exos XnearlineCMR24TBSATA-6G3.5"
$28.75/TB
$689.97
REFURBIn Stock
Updated Mar 25, 2026, 05:52 AM
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Quick Verdict

The Seagate Exos X24 24TB SATA is a 24TB SATA-6G enterprise drive at $28.75/TB - CMR recording makes it safe for all RAID levels and NAS deployments. As a refurbished unit, run SMART diagnostics on arrival and verify power-on hours.

Specifications

Capacity24TB
Form Factor3.5"
InterfaceSATA-6G
Recording TechCMR
RPM7200
Cache512MB
Sector Size512e
Workload Rating550TB/yr
Warranty5 years
ASINB0CNSZ1B5B

90-Day Price History

$27$29$3103/2505/0606/17
How it compares - 24TB SATA-6G
#1WD Ultrastar DC HC580 24TB Renewed
$17.92/TB
#2Seagate Exos X24 24TB Renewed
$18.33/TB
#3Seagate Exos X24 24TB Renewed
$24.58/TB
#4Seagate Exos X24 24TB Enterprise SATA
$25.00/TB
#5Seagate Exos X24 24TB SATATHIS DRIVE
$28.75/TB

Compare to similar 24TB SATA-6G drives

WD
Ultrastar DC HC580 24TB Renewed
$17.92/TB
$429.99
REFURB
Seagate
Exos X24 24TB Renewed
$18.33/TB
$439.99
REFURB
Seagate
Exos X24 24TB Renewed
$24.58/TB
$589.99
new
Seagate
Exos X24 24TB Enterprise SATA
$25.00/TB
$599.99
new

Frequently Asked Questions

Yes. The Exos X24 24TB SATA uses CMR recording which is fully compatible with all RAID levels. It is rated for 550TB/year workload.

5-year manufacturer warranty. This listing is a refurbished/renewed unit - verify seller warranty before purchase.

Compatible with any server, NAS or workstation with a SATA port. Works in Synology, QNAP, TrueNAS, UnRAID and all major NAS platforms.

Use Case Scenarios

🏠
Home & SMB NAS
Building a high-capacity NAS for media, backups and file sharing.
~ Good fit
CMR recording is RAID-safe and fully compatible with Synology, QNAP, TrueNAS and UnRAID. Refurb units offer strong value for non-critical NAS.
💾
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
✓ Excellent fit
24TB SATA drives are ideal for backup targets. SATA gives maximum $/TB for backup repositories.
☁️
Object Storage / Cold Data Tier
High-density storage for MinIO, Ceph or Hadoop at scale.
✓ Excellent fit
At 24TB per drive, a 60-bay JBOD delivers 1440TB raw — enough for petabyte-scale object storage.

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 12 hours for 24TB. 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 24TB 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.