Dear customer, please note that items Western Digital WD Ultrastar 12TB 3.5' Enterprise HDD SAS 256MB 7200RPM 512E SE P3 DC HC520 24x7 Server 2.5mil hrs MTBF 5yrs wty HUH721212AL5204 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.