Let's say you got a ZFS raidz1 pool of 7x500gig hard disks. And you want to upgrade that pool by swapping out the 500gig disks and replacing them with 5x1T drives... There is no way to add the new drives inside the box together with the old ones cause your motherboard does not have 12 sata ports, it only has 8. And you don't have enough storage lying around to move your pool's data over, delete the old pool, remove the old drives, install the new drives, create the new pool...
So, the question is, is there a way to upgrade the pool by takeing out one disk, replaceing it with a new, wait for resilver, then move on to the second disk, etc? So eventually you have only the new drives inside the box, with all the data on them and with the full capacity available? -- This message posted from opensolaris.org
