All Data Storage Expansion Hard Disk Drives Network Attached Storage (NAS) 1 Hard Drive Bay 12 Hard Drive Bays 15 Hard Drive Bays 16 Hard Drive Bays 18 Hard Drive Bays 2 Hard Drive Bays 20 Hard Drive Bays 24 Hard Drive Bays 3 Hard Drive Bays 30 Hard Drive Bays 4 Hard Drive Bays 6 Hard Drive Bays 8 Hard Drive Bays 9 Hard Drive Bays NVR