Toshiba today introduced the updated N300 series 3.5-inch internal SATA hard drives targeting NAS applications. These drives come with new product branding the company introduced with its recent S300 series HDDs for surveillance/NVR applications. The drives come in capacities of 2 TB, 4 TB, 6 TB, 8 TB, 10 TB, 12 TB, 14 TB, 16 TB, 18 TB, 20 TB, and 22 TB, with the higher capacity models—12 TB and above—being helium-filled, to reduce power/noise characteristics. All models in the series come with CMR (conventional magnetic recording), which ensures predictable write and rewrite performance. The drives come with 7,200 RPM spindle-speed, and depending on the capacity variant, between 64 MB to 512 MB of write cache. The drives come with SATA 6 Gbps host interface, and offer sequential transfer speeds of up to 281 MB/s reads, with up to 268 MB/s writes, with an MTBF rated between 1-1.2 million hours.