I'm trying to follow the advice from this TechNet article about partition alignment. Our San is an EMC, the disks are in a 4 disk raid 10. This services an I/O intensive application, 60:40 write:read.
According to the
wmic query in the article for
Partition_Offset, I get 1048576.
According to my SAN administrator the
Stripe_Unit_Size is 524288000. Does that even sound right?
The simple calculation to find if you're aligned or not is:
Partition_Offset ÷ Stripe_Unit_Size
1048576 / 524288000 = .002
This is not an integer, so it appears we are not aligned.
diskpart to reformat the drives, what
File_Allocation_Unit should we use?