The Dell 12 TB 7.2K RPM Near-line SAS (NLSAS) 512e 3.5-inch Server HDD is an enterprise-class high-capacity hard disk drive optimized for data-intensive storage environments such as backup/recovery servers, file servers, and bulk storage tiers in data centers. It uses a Near-line SAS (NL-SAS) interface at 12 Gbps to combine the cost-efficiency and density of high-capacity HDDs with the robust signalling and reliability of SAS connections, delivering reliable throughput and integration with enterprise RAID controllers.
Designed to fit standard 3.5″ large form factor (LFF) bays with hot-swappable support, this drive is ideal where large amounts of data need to be stored cost-effectively with consistent uptime and serviceability.
12 TB storage capacity — provides massive space for archival, backups, and bulk datasets.
Near-line SAS (NL-SAS) 12 Gbps interface — enterprise-grade connectivity with robust signalling, error correction, and compatibility with modern server storage systems.
Nearline drive class — optimized for sequential throughput and large capacity workloads.
512e (512-byte emulation) sector format — broad compatibility with legacy/enterprise OS and RAID controllers.
7200 RPM rotational speed — balanced for improved throughput and energy efficiency on high-capacity media.
Helium-sealed technology (typical) — allows more platters in the same space, reducing power consumption and improving reliability in dense arrays.
Enterprise-grade design — built for 24×7 continuous operations in server/storage chassis.
Hot-swappable — can be replaced or serviced without powering down the server/array if supported by backplane.
Works with a wide range of Dell PowerEdge servers and PowerVault/ME/SC storage arrays supporting SAS HDDs.
Integrates with enterprise RAID controllers (Dell PERC, SAS HBAs) for RAID 0/1/5/6/10 configurations.
| Specification | Details |
|---|---|
| Model / SKU | 12 TB NL-SAS 12 Gbps 7.2K RPM 3.5″ HDD (Dell) |
| Capacity | 12 TB (12,000 GB) |
| Form Factor | 3.5 inch Large Form Factor (LFF) |
| Interface | SAS 12 Gbps (Near-line SAS) |
| Rotational Speed | 7,200 RPM |
| Sector Format | 512e (512-byte emulation) |
| Cache / Buffer | Typically ~256 MB (varies by part) |
| Workload Class | Near-line / Bulk data storage |
| Hot-Swap Support | Yes (when supported by chassis/backplane) |
| MTBF | Often ~1.4–2 M hours typical (varies by SKU) |
| Power Consumption | ~9–12 W (active) typical |
| Operating Temp Range | ~0–60 °C typical |
| Shock / Vibration Ratings | Enterprise-level (varies by model) |
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