Dear customer, please note that items Western Digital WD Purple Pro 10TB 3.5' Surveillance HDD 7200RPM 256MB SATA3 265MB/s 550TBW 24x7 64 Cameras AV NVR DVR 2.5mil MTBF 5yrs are currently listed as pre-order/on order. You can continue to place a backorder and it will ensure earliest allocation when these products are available. Our team will contact you to notify the expected ETA. Thank you.