does exist a limit of disk size for NW 6 SP 5 (with NSS Version 3.05)?

I would resize a raid 1 from 146 gb disk to 300 gb disk. at the moment on the raid 1, 2 nss partitions exists. so i have 2 nss partitions free. correct?

Follow i would proceed:
After i replace the disks, i would create a third nss partition (with 154 gb) and allocate this partition to a nss pool.

Does this work?

Thx 4 answer...