Re: CDOT fail
I'm in the middle of a 7-mode to cDOT transition, and it's not easy. But... once you've made it, the benefits really are there. It's just that the cost of the storage is still way too high. And for simple NFS only file shares, the new cDOT is *much* more complex and harder to do the simple things.
But don't get me wrong, this is the transition they needed to make, they just should have made it five years ago, and done it with more of a break IMHO, so that they could really encourage people to move.
Now you can snapmirror volumes from 7-mode to cDOT, it's not impossible like one of the posters said. Is it simple? Yes. Do you run into problems? Yes. I tried doing this over a WAN link and we ended up having to stop it because of major problems with volumes locking up. But for short term quick copies/migrations, it does work. And it might also be that the newer version we're on will have fixed those issues.
The other big issue which has been fixed with cDOT 8.3 is that you do NOT need to dedicate entire disks to the root aggregate and volume any more, they now spread that across multiple disk using that magic technology... partitions! This fixes a major issue lotso f people had, that on small systems, you lost alot of disk to core OS overhead. It's still not perfect, but it's better.
So on the whole, I'm happy with cDOT and I really like how I can setup virtial filers for seperate groups and consolidate stuff and yet not worry about someone bringing down other groups when they screw something up on thier Virtual Filer (SVM). It's liberating, sorta like early VMware/Xen/KVM was. IT's still rought around the edges, but it's getting more polished all the time.
Now they just need to bring down the price so as to encourage sales so they can amortize their sunk costs across as big a base as possible. Really, they can do this, it will just take time. And they need to in some ways also simplify their offerings and work hard to provide value again. Stop trying to be everything to everyone, just provide the best NFS/CIFS/iSCSI/FC storage they can, with emphasis on the first two like in the past.