Seagate ST1000NM0033 9ZM173-003 1TB 7200RPM 6Gbps 3.5" SATA internal hard drive

1TB 7200RPM Enterprise SATA HDD

The Seagate Constellation ES.3 ST1000NM0033 is a 1TB 3.5-inch internal hard drive spinning at 7200RPM with a SATA 6Gb/s interface and 128MB cache. It is built for desktop workstations and entry-level servers that need reliable bulk storage. The drive is supplied new and includes technologies such as Native Command Queueing and on-the-fly error correction.

Suited for capacity-focused builds.

This drive suits system builders who want large, affordable capacity for backups, media libraries or general-purpose data volumes. It is not for users who require the low access latency or high random IOPS of solid-state storage. Buyers needing 2.5-inch form factors or interfaces other than SATA should consider different products.

The 128MB cache size determines sustained throughput

A 128MB buffer helps smooth burst transfers and improves performance on sequential workloads such as video recording or large file copies. If your workload depends on very small random writes, the cache alone cannot overcome mechanical latency. Verify that your motherboard or controller provides a SATA 6Gb/s port to use the full interface speed.