Questions about Toshiba X300

Seems to be an error. Normally, you can expect between 155-175 MB/s. Attached is a detailed test: https://ricksreviews.org/blog/2019/03/14/toshiba-x300-10-tb-hard-drive-english/

The hard drive cache is 128 MB for the 6 TB model. The storage technology is CMR (Conventional Magnetic Recording). The hard drive is filled with air, not helium. The maximum workload rate per year is not explicitly stated for the X300 Performance model, but the X300 Pro model supports up to 300 TB/year, the standard model is lower. The maximum internal transfer rate is not directly specified by Toshiba, but the SATA interface is specified as 6 Gb/s (approx. 600 MB/s), which is the theoretical upper limit. The speed is 7200 rpm.

The cache is 512 MB, the storage technology is CMR (Conventional Magnetic Recording). The hard drive is filled with helium. The maximum workload rate per year is not explicitly stated in the available data. The maximum internal transfer rate is also not directly stated, but the sustained speed (continuous transfer rate) is around 75 MB/s. The speed is 7200 rpm. The speed is 7200 rpm and the interface is SATA 6 Gbit/s.