Dear customer, please note that items QNAP TS-879U-RP 8 Bay HotSwp Rackmnt NAS- i3 2120 3.3G, 4Gb DDR3,USB 3.0, VMware cert, iSCSI,Dual gig,3y AR wty (no RAIL 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.