Toshiba N300 18 TB 3.5-inch internal HDD for NAS, Serial ATA III, 7200 revolutions per minute

The Toshiba N300 18TB NAS HDD is an internal hard drive designed for network-attached storage systems. Its capacity provides space for shared files, backups, and other ongoing storage workloads in home or business NAS installations. A rated sustained transfer rate of 281 MiB/s describes its sequential data transfer capability. Support for continuous 24/7 operation suits systems that remain available outside normal working hours. The specified workload limit is 180 TB per year, which is worth considering when assessing expected storage activity.

A 3.5-inch form factor makes drive-bay size a relevant check before installation. The SATA III interface requires a compatible storage connection in the host system. The platters rotate at 7200 RPM, giving a concrete speed specification for comparison with other mechanical drives. This is an internal component rather than a standalone external storage device. Buyers should therefore check their NAS system's drive requirements against the physical format and interface before choosing it.

• 512 MB buffer provides onboard memory for buffering data.
• 5.74 W idle power consumption gives a reference for power use when inactive.
• 1,000,000-hour MTBF is the specified mean time between failures, not a guaranteed service life.
• RoHS compliance is listed for restricted hazardous substances.
• One drive per pack supports planning for single-drive purchases or multi-bay installations.