This is an optional step and shows how to create Partition Access Paths (mount points) for volumes.
Retrieve the partition details in order to see the PartitionNumber which is required for creating a PartitionAccessPath.
PS C:\> Get-Partition
DiskPath: \\?\mpio#disk&ven_pure&prod_flasharray&rev_8888#1&7f6ac24&0&3632344139333730343530383446333530384246343631343030303131414342#{53f
56307-b6bf-11d0-94f2-00a0c91efb8b}
PartitionNumber DriveLetter Offset Size Type
--------------- ----------- ------ ---- ----
1 17408 128 MB Reserved
2 D 135266304 1023.87 GB Basic
DiskPath: \\?\mpio#disk&ven_pure&prod_flasharray&rev_8888#1&7f6ac24&0&3632344139333730343530383446333530384246343631343030303131414343#{53f
56307-b6bf-11d0-94f2-00a0c91efb8b}
PartitionNumber DriveLetter Offset Size Type
--------------- ----------- ------ ---- ----
1 17408 128 MB Reserved
2 E 135266304 1023.87 GB Basic
DiskPath: \\?\mpio#disk&ven_pure&prod_flasharray&rev_8888#1&7f6ac24&0&3632344139333730373345393430323235413241353242423030303341453836#{53f
56307-b6bf-11d0-94f2-00a0c91efb8b}
PartitionNumber DriveLetter Offset Size Type
--------------- ----------- ------ ---- ----
1 1048576 500 MB IFS
2 C 525336576 149.51 GB IFS
Create a directory that will be assigned to the new volume
PS C:\> New-Item -Path 'C:\FlashArrayMounts\NTFS' -ItemType Directory
Directory: C:\FlashArrayMounts
Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 5/23/2017 3:50 PM NTFS
PS C:\> New-Item -Path 'C:\FlashArrayMounts\ReFS' -ItemType Directory
Directory: C:\FlashArrayMounts
Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 5/23/2017 3:50 PM ReFS
Add the mount points for the individual volumes. Use the PartitionNumber retrieved from Step 1 for the new drives (D and E)
PS C:\> Add-PartitionAccessPath -DiskNumber 1 -AccessPath 'C:\FlashArrayMounts\NTFS' -PartitionNumber 2
PS C:\> Add-PartitionAccessPath -DiskNumber 2 -AccessPath 'C:\FlashArrayMounts\ReFS' -PartitionNumber 2
View the new mount points
PS C:\> cd C:\FlashArrayMounts\
PS C:\FlashArrayMounts> ls
Directory: C:\FlashArrayMounts
Mode LastWriteTime Length Name
---- ------------- ------ ----
d----l 5/23/2017 3:50 PM NTFS
d----l 5/23/2017 3:50 PM ReFS