Hi,

I just have the same issue here but with a 3ware 9650SE-8LPML.
I had 3 1TB units in RAID5, I added a 4th unit to the array using the 3DM2 interface, no hassles here. The array was expanded online on the live without any need to reboot or other downtime.

Now I want that extra space to be visible in DSS, I tryed Rescan in Volume manager, but the old unit size shows up.

Do I need to reboot DSS in order for it to see the extra space??