Toshiba MG09 Series 18TB 7200 RPM SATA Enterprise Hard Drive (MG09ACA18TE)

The Toshiba MG09ACA18TE is an 18 TB capacity enterprise hard drive built for demanding data centre environments. It uses Conventional Magnetic Recording (CMR) for broad application compatibility, ensuring seamless integration with cloud-scale server and storage infrastructure, software-defined data centres, file- and object-based storage systems, and business-critical server platforms. At the heart of this drive is Toshiba's Flux Control Microwave-Assisted Magnetic Recording (FC-MAMR) technology, which enables the high areal density required to pack 18 TB across a nine-disk helium-sealed enclosure. The hermetically sealed design — achieved through Toshiba's precision industrial laser welding process — permanently traps helium inside the drive mechanics. Helium's lower density reduces aerodynamic drag on the spinning platters, cutting operational power draw and delivering meaningful TCO improvements over comparable air-filled designs. The sealed enclosure also guards corrosion-sensitive electronics against airborne contaminants, helping extend operational life in real-world data centre conditions. Running at 7,200 RPM, the MG09ACA18TE delivers a maximum sustained data transfer rate of 268 MiB/s, making it well suited to throughput-intensive workloads such as tiered storage, compliance archiving, data protection, and large-scale backup infrastructure. The 512 MiB buffer further supports burst data handling in high-queue-depth server environments. The drive ships with the SATA 3.3 interface at 6.0 Gbit/s (backward compatible to 3.0 Gbit/s and 1.5 Gbit/s), making it straightforward to retrofit into existing 3.5-inch drive bays without specialised cabling or HBA changes. Advanced Format sector technology is implemented as 512e (512-byte emulation to the host, 4,096-byte physical sectors on disk), ensuring compatibility with legacy operating systems while benefiting from the error-correction gains of larger physical sectors. The Persistent Write Cache feature provides data-loss protection during unexpected power-loss events, adding an extra layer of reliability for write-intensive applications. A workload rating of 550 TB transferred per year confirms this drive is rated for enterprise-class duty cycles well beyond consumer or desktop-grade products. — Verified Specifications — Model: MG09ACA18TE | Series: MG09 | Interface: SATA 3.3 (6.0 / 3.0 / 1.5 Gbit/s) | Formatted Capacity: 18 TB | Rotation Speed: 7,200 RPM | Buffer Size: 512 MiB | Max Sustained Transfer Rate: 268 MiB/s | Logical Block Length: Host 512 B / Disk 4,096 B (512e) | Workload Rating: 550 TB/year | Active Idle Power (Idle-A): 4.16 W | Random 4K Q1 Power: 8.35 W | Acoustics (Active Idle): 20 dB | Form Factor: 3.5-inch (26.1 mm height) | Allowable Voltage: 12 V ±10% / 5 V +10%/−7% | Warranty: 5 Years