adding disks to a RAID 5

[jfrankel43]

Please forgive this newbie question:

Infrant's ReadyNAS boasts about being able to add disks dynamically to their RAID 5. They call this "X RAID", and it is a very attractive feature to me, although their NV+ doesn't have the best performance stats.

Is the ability to add disks to a RAID 5 without rebuilding it from scratch a feature that Infrant has a monopoly on? Or is this something that can be done with every RAID 5?

Thanks
Josh

 

[chookman]

Depends on the controller, some onboard wont do it. Majority of dedicated cards that support RAID-5 will. Just depends.