3.5" HDD 18.0TB-SATA-512MB Western Digital "Purple Pro (WD181PURP)"Capacitate memorie: 18 TB Sistem de stocare a datelor: 3.5" Interfa?a SSD: SATA-3 (6 Gb/s) Dimensiune memorie tampon (cache): 512 MB Viteza axului: 7200 RPM Rata de transfer : 272 MB/s