DatacenterDisk
Seagate

Constellation ES.2 3TB SAS

ST33000650SS
ConstellationnearlineCMR3TBSAS-6G3.5"
$20.51/TB
$61.54
newIn Stock
Updated Mar 25, 2026, 08:00 AM
Buy on Amazon →
Quick Verdict

The Seagate Constellation ES.2 3TB SAS is a 3TB SAS-6G enterprise drive at $20.51/TB - CMR recording makes it safe for all RAID levels and NAS deployments. New unit with full manufacturer warranty.

Specifications

Capacity3TB
Form Factor3.5"
InterfaceSAS-6G
Recording TechCMR
RPM7200
Cache—
Sector Size512n
Workload Rating550TB/yr
Warranty—
ASINB07H8N4XBT

90-Day Price History

$11$17$2203/2304/2906/04
How it compares - 3TB SAS-6G
#1MDD 3TB SAS 6G 7200RPM
$11.33/TB
#2Seagate Constellation ES.2 3TB SASTHIS DRIVE
$11.63/TB
#3Seagate 3TB Enterprise Capacity SAS 6G
$11.67/TB
#4Seagate ST3000NM0023 3TB SAS 6G 7.2K
$12.00/TB
#5HGST HUS724030ALS640 3TB SAS 6G
$15.13/TB

Compare to similar 3TB SAS-6G drives

MDD
3TB SAS 6G 7200RPM
$11.33/TB
$33.99
new
Seagate
3TB Enterprise Capacity SAS 6G
$11.67/TB
$35.00
REFURB
Seagate
ST3000NM0023 3TB SAS 6G 7.2K
$12.00/TB
$36.00
REFURB
HGST
HUS724030ALS640 3TB SAS 6G
$15.13/TB
$45.39
REFURB
Seagate
3TB Enterprise Capacity SAS 6G
$17.49/TB
$52.47
new

Frequently Asked Questions

Yes. The Constellation ES.2 3TB SAS uses CMR recording which is fully compatible with all RAID levels. It is rated for 550TB/year workload.

Warranty varies by seller. Check the Amazon listing for current warranty terms.

Compatible with any server or workstation equipped with a SAS HBA or SAS backplane. Tested with Dell PowerEdge, HPE ProLiant, Supermicro and IBM System x platforms.

Use Case Scenarios

🏠
Home & SMB NAS
Building a mid-range NAS for media, backups and file sharing.
~ Good fit
CMR recording is RAID-safe and fully compatible with Synology, QNAP, TrueNAS and UnRAID. New drives come with full warranty.
💾
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
✓ Excellent fit
3TB 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. 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 2 hours for 3TB. 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 3TB 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.