Last month, three major hard disk manufacturers, WD, Seagate and Toshiba, publicly recognized mechanical hard disk productsMixed upSMR technology. Today's popular mechanical hard disk mainly adopts two kinds of technologies: CMR / PMR (vertical magnetic recording) and SMR (laminated magnetic recording). SMR technology has poor write performance, which can reduce cost and increase storage capacity by 20%. It is suitable for one write and multiple read scenarios, not suitable for scenarios requiring repeated write and read, such as NAS 13raid (may cause the hard disk to be damaged in a short time).
According to the complaint, western data deceived and hurt consumers.