Hello @CHILENITO,
Welcome to the forum!
It’s not recommended to use RAID, especially RAID5:
With todays disks it’s easy to lose a whole RAID volume during the rebuild because of bitrot.
Please, avoid this problem by running an own node on each disk separately. Since all nodes behind the same /24 subnet of public IPs will share the ingress, so they would act as a RAID on a network level.
If the disk would fail - you will lose only one node, but others will remain, so actually you will lose only part of the data. In case of RAID you likely will lose everything.
You of course can configure a RAID10, it will be more robust, but it will be twice as expensive.
Read more for pro and cons here: RAID vs No RAID choice