SanDisk Professional G-RAID MIRROR 12TB Enterprise-Classs Desktop 2-bay RAID Array - RAID 1 - 2x 7200RPM Ultrastar HDD - PRO-BLADE SSD Mag Slot - 2x Thunderbolt 3 ports - Sequential Read up to 250MB/s - Sequential Write up to 250MB/s (SDPHH2H-012T-NBAAD)