I have a synology DS420j NAS which can handle 4 disks. I have the following 4 disks:
-disk1 : WD Red 4 To
-disk2 : WD Red 4 To
-disk3 : WD Red Plus 4 To
-disk4 : WD Red Plus 4 To
I’d like to know what is the recommanded setup between the following three setup or any other you would suggest :
-Setup 1 : mount all the four disks in one unique RAID 5 volume which will offer a storage capacity of 12 To.
-Setup 2 : mount the two Red disks together in one RAID 1 volume and the two Red Plus disks together in another RAID 1 volume. This will offer a storage capacity of 4+4=8 To.
-Setup 3 : mount one Red disk and one Red Plus disk in one RAID 1 volume and same configuration for a second volume. This will offer a storage capacity of 4+4=8 To.
I have read that using Red disks in RAID volume is not recommanded. That’s why I’m asking.
In case setup 3 is the best, is there a recommanded sequence to use between the Red and Red plus disks ? Red as disk 1 and Red Plus as disk 2 or the opposite ?