ahmed9darwish

Hi Unraiders, I am in the process of creating a mid ranged unraid server that has the capacity to host more than 10 hard drives ( i will buy UNRAID PRO License from the start ), the main purpose of this build is data storage for pictures and videos (server user is a professional photographer), initial budget is around 1700$ and hard drives will be added quarterly, I new to servers and raids but not new to hardware and not afraid to get my hands dirty. initial build that I had in mind : CPU: AMD Ryzen 7 PRO 4750G Processor ( or better 5750G) CPU cooler: Thermalright Peerless Assassin 120 SE MOTHERBOARD: ASRock AM4 X570 Steel RAM: 16GB (2x8GB) DDR4 ECC Server ram Cache SSD: WD_BLACK 500GB SN770 NVMe POWER SUPPLY: Thermaltake Toughpower GF1 850W CASE: Cooler Master HAF X hard drives I am thinking to buy ( I may start with 3 or 4 ) : Western Digital 10TB WD Red Plus (WD101EFBX) Seagate IronWolf 10TB NAS Internal (ST10000VN0008) Toshiba N300 16TB NAS HDWG31GXZSTA questions I have regarding unraid : 1- Lost a piece or all hardware ( what's the difference if we lost CPU, RAM, motherboard, raid card, Power supply) ? 2- Dead flash memory ( can we have a hot backup ?can I have 2 flash's at a time ) 3- Are hard drive hot swappable ? with system up ? 4- What happens if we have a sudden shut down ( lose of power ), how easy is it to recover from that ? can it damage the whole thing? 5- What's the process for dead hard drives replacement ? 6- Safe temperature for device and idle temps ? 7- Will cache drive will be in the middle between drives and users ? lets say my cache drive is 500 gb and that my daily usage of data is 300-480 gb a day 80gb will be sent to the unraid server each 4 hours or so, how the cache work will be both stored in cache and in side the drives ? what if a pc needs a file that was sent to the server today will the cache be used for read and write ? 8- do we need ECC memory ? the whole idea of my build to have a Ryzen pro is for that ? Use case is like the below picture, each editor will be connected to the Unraid server via a switch we will have multiple pc accessing the server at a time and coping and writing data from the server.