Storage Space is too slow.
Because ethernet interface of servers that support Storage Space is only 1Gbps, The throughput is limited by 1Gbps and i think character of raid-5 reduces the throughput performance.
Manager gave me one expensive storage X-IO 24Tera that never used since it deployed 7 years ago.
One problem is that the storage had only san interface and my server didn’t have.
So I used a server connected to storage as ISCSI target.
I configure the ISCSI target server to connect my 6 physical server.
And I made it as CSV(Clustered Shared Volume) to deploy my VMs there.
There is still limitation of 1Gbps throughput, I felt increased performance.