Seagate Constellation ES.3 3TB Enterprise Hard Drive (ST3000NM0023) – SAS 6Gb/s, 7200 RPM, 128MB Cache, CMR

The Seagate Constellation ES.3 3TB (ST3000NM0023) is a 3.5-inch enterprise hard drive for servers, data centers, large NAS arrays and homelab builders. 7200 RPM operation, SAS 6Gb/s connectivity and a 550TB/year workload rating deliver dependable 24/7 capacity. It is a strong fit for backup targets, virtualization hosts and scale-out storage.

High-capacity enterprise storage for racks and large arrays.

Why Enterprise Workloads Need Enterprise-Rated Drives

Servers, backup targets and large NAS arrays run 24/7, with drives sharing vibration and heat in dense chassis. Desktop and entry NAS drives are not rated for that duty cycle, which leads to timeouts, degraded arrays and costly downtime.

The Seagate Constellation ES.3 3TB is designed for enterprise workloads, with a 550TB/year rating and firmware tuned for RAID controllers. At 3TB, it covers mainstream enterprise storage capacity needs – shared files, databases or rolling backups – without paying for capacity you will not use. The SAS 6Gb/s interface provides dual-port connectivity and full-duplex transfers on SAS HBAs and RAID controllers.

High Capacity per Bay

At 3TB, the drive reduces the number of bays and spindles needed for the same usable capacity, lowering power and cooling per terabyte.

Enterprise Reliability and Monitoring

Rated for 24/7 operation with enterprise workload figures, the drive reports detailed S.M.A.R.T. data for proactive replacement in servers and arrays.

Setup Instructions

How to Install the Seagate Constellation ES.3 3TB

1. Verify your server, NAS or HBA supports 3.5-inch SAS 6Gb/s drives at this capacity.
2. Mount the drive in the correct carrier or tray.
3. Insert into the bay (hot-swap if supported) and confirm it appears in the controller or OS.
4. Add it to a RAID group, ZFS pool or storage volume and enable health monitoring.