Question about Toshiba N300 NAS HARD DRIVE 6TB

The hard drive is equipped with conventional air filling (not helium), as it uses CMR technology (Conventional Magnetic Recording) and no helium filling is specified. The maximum internal data transfer rate is determined by the SATA III interface at 6 Gbit/s (approx. 600 MB/s). The hard drive has a speed of 7200 rpm and a 512 MB cache, which enables high data transfer rates and performance for NAS applications. A specific maximum internal data transfer rate in MB/s is not explicitly stated, but the SATA 6 Gbit/s interface is the limiting factor.