replicaSet == vps

it's more a question rather than an issue but maybe i can get some insight on why there are a specific assumption in the cart

in this snippet

{{- if eq (int .Values.replicaCount) 4 }}
  {{- range $i := until (int .Values.replicaCount) }}    # genera 4 mount                                                                                                                                        
  - name: data-rustfs-{{ $i }}                                                                                                                                                                                 
    mountPath: /data/rustfs{{ $i }}           
  {{- end }}                                                                                                                                                                                                     
  {{- else if eq (int .Values.replicaCount) 16 }}
  - name: data                                                                                                                                                                                                   
    mountPath: /data                                                                                                                                                                                           
  {{- end }}   
 

the number of volumes that are given to a specific pod depend on the replica count.
so if replica = 4 i got 4 each with 5 volumes (1 log and 4 data)
if i set 16 i got 16 pod each with 16 volumes.

now, on prem, the disk abstraction layer in my case it's handled via longhorn, i have a dedicated set of worker where longhorn system work, that have storage. longhorn already replicate the data for me, there is replicaset = 3 for every pvc that get requested.

in this scenario, it's still correct to have 4 PVC for eveyr pod? it's gonna to be a huge waste of space i think
What is the best way to handle this scenario?

replicaCount=4, vps=1 (4 drive totali)                                                                                                                                                             
                                                                                                                                                                                                                 
  Pod rustfs-0 ─ PVC0 ─ 1 drive (nodo A)                                                                                                                                                                         
  Pod rustfs-1 ─ PVC1 ─ 1 drive (nodo B)                                                                                                                                                                         
  Pod rustfs-2 ─ PVC2 ─ 1 drive (nodo C)      
  Pod rustfs-3 ─ PVC3 ─ 1 drive (nodo D)   

my idea is to have a scenario that look like that, with every pod with 1 volume and EC:1 does this make sense?

or i should make a "replica:1" of longhornstorage and use it as not replicated data?

No file or test is named. Start by locating the chart template containing replicaCount and the values controlling PVC and Longhorn storage, then compare the 4- and 16-replica branches with the proposed one-volume-per-pod and EC:1 setup. Done means a maintainer-approved storage configuration or a documented decision explaining the supported layout.