Diskpart.exe peer review ?

[vr.]

I setup a RAID6 volume with 2TB x 10 Hitachi disks. The Windows 2008R2 disk manager GUI created the volume with a 17K offset which seemed wrong based on the disk alignment info I've read. So I compiled and executed these steps to create and format the space manually:

diskpart.exe

list disk
select disk 1
clean
convert gpt
list partition
select partition 1
delete partition override
create partition primary align=1024
list volume
select volume 2
format fs=ntfs unit=8192 label=”VolumeD” quick
assign letter=D

Any potential problems with how I've created the space in Windows or potential problems?

Is the amount of lost raw to formatted space looking correct?

Here's my resulting layout: