Synology DX1215 Diskless System 12-Bay Expansion Unit Form Factor: 12-Bay HDD Interface: 3.5� or 2.5� SATA(III) / SATA (II) X 12 (hard drives not included) Management: RAID Management: - Volume Type: Basic, JBOD, RAID 0, RAID 1, RAID 10, RAID 5, RAID 5+Spare, RAID 6 - RAID Migration: from Basic to RAID 1, Basic to RAID 5, Basic to RAID 5+Spare, RAID 1 to RAID 5, RAID 1 to RAID 5+Spare, RAID 5 to RAID 5+Spare, RAID 5 to RAID 6 - Expand RAID 1, RAID 5, RAID 5+Spare or RAID 6 with Larger Hard Drives - Expand RAID 5, RAID 5+Spare or RAID 6 by adding Hard Drives - Managed with the Synology DSM Port Others: 1 x Expansion Port Power: Power Recovery: Sync with the connected DiskStation (Auto Mode) AC Input Power Voltage: 100V to 240V Power Frequency: 50Hz to 60Hz, Single Phase Temperature: Operating temperature: 5 degree C to 35 degree C (40 degree F to 95 degree F) Stora...