VMware VMFS datastore LUN PSP and settings differences across different ESXi hosts ?

Hi All,

When I run a Powershell script that is recommended by my Hardware vendor http://www.codyhosterman.com/2016/05/updated-flasharray-vmware-best-practices-powercli-scripts/ I get the eblow strange result in my ESXi hosts:

DRS Cluster: Production - II (PRODESXi14)

NAA                                  PSP               PathCount IOPSValue ATSMode
---                                  ---               --------- --------- -------
naa.624a937095607650b5eaec0800011025 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec0800011026 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec0800011027 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec0800011028 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec0800011029 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec080001102a MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec080001102b MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec080001102c MostRecentlyUsed* 4         N/A       N/A    

Select allOpen in new window

and this is from the other ESXi hosts (PRODESXi08)  in the same DRS cluster as above:

NAA                                  PSP        PathCount IOPSValue ATSMode
---                                  ---        --------- --------- ------- 
naa.624a937095607650b5eaec0800011025 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec0800011026 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec0800011027 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec0800011028 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec0800011029 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec080001001f RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec080001102a RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec080001102b RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec080001102c RoundRobin 4         1000*     N/A    

Select allOpen in new window

My question is that:

1. Do I need to standardize the PSP policy for the same VMFS data store accessed by all different ESXi hosts ? or is it there for a reason ?
2. What is the best way of doing it without impacting the production VM server running on the host and the VMFS data store ?  

Any help and suggestion would be greatly appreciated.

Thanks.