WD Purple WD10PURZ-20PK 1 TB Hard Drive - 3.5" Internal - SATA (SATA-600)
WD Ultrastar DC HC330 WUS721010ALE6L4 10 TB Hard Drive - 3.5" Internal - SATA (SATA-600)
WD Ultrastar DC HC550 18 TB Hard Drive - 3.5" Internal - SAS (12Gb-s SAS)
WD Ultrastar DC HC550 18 TB Hard Drive - 3.5" Internal - SATA