Disk Utility - Expand Array

[Maletor]

When I use disk utility to expand my RAID array it creates a partition on my 1.5TB drive which it would like to add to the RAID 5.

However, none of the drive existing on the RAID are partitioned so what I think has happened is the partition itself has created a difference of about 2 million bytes smaller than the others and thus unable to add the component.

How can I specify the exact bytes for my hard drive partition so that I can add this to the array?

[Maletor]

So is this a bug or not?

[Maletor]

If you need something clarified or need any more information let me know.