Need some help with NAS system

Hello all, Im trying to build a nas system. My needs are to store my photos and videos . I want to access it from iPhone with remote access. Can anyone has a guide what should i go with and how to set it up

Option 1

powerful small from factor business class Lenovo desktop model number M710S in good condition. runs super fast -Intel® Core j5-7400 Quad Core@ 3.00 GHz with turbo boost up to 3.50GHZ )- 8GB DDR4 Ram - Graphics Card :Intel HD Graphics 630 total graphic memory 4182MB - 1TB Sata HDD - internal speaker - 8 usb ports 3.1 - Ethernet Lan port - DVD burner - Vga port - Two Displayports

Option 2

HP EliteDesk i5-4590 (3.2 Ghz upto 3.6 Ghz, 6M cache, quad core) customized to 16G RAM 128G SSD + 500G HDD DVD Win10 fresh installed come with Wifi adapter

Option 3

Lenovo ThinkCentre m73 Intel Core 13 4130 or i3 4150 processor / 6 to 8GB RAM / 500GB or 1TB hard drive / DVD-RW / Windows 10 Professional just installed.