[Skunkworks] 1TB HP Hard Disks

Hello good people. Can you advice on where I can get these Hard Disks:- HP 1TB Midline 3G SATA 7.2K 3.5" LFF Hard Drive 454146-B21 or HP 1TB Midline 3G SATA 7.2K 3.5" LFF Hard Drive 454273-001 Planning the deployment of a backup solution where the data storage expected is rather high and do not want to go the NAS way. Regards, Mugo