It’s not ok, and you know this. This is evading the protection rule for nodes selection from each /24 to do not store the pieces of the same segment in the same physical location.
@brizio71 if your server would go down, the network would have a higher risk of lost or unrecoverable segment, and this could result in network shutdown, because the lost data = the lost customer = the lost trust = no payments = no payouts to anyone.
At best, the payouts will be cut even further, making the bypass uneconomical. Do you really want either of these options?
Regarding the topic, using a one disk per node is a best choice usually, but since you increase the risk of loss or made the segment inaccessible by bypassing a /24 limit, I would suggest to use a redundant setup for your hardware, including, but not limited to disks, the server itself, the redundant power supply or at least a managed UPS, the redundant internet connection, so using multiple ISPs, not VPNs, etc.