On 28 March 2017 at 20:09, Mike Gossett <cmgossett@gmail.com> wrote:

You'll need at least 4 10GB switch ports - the process to convert from switchless to switched isn't that bad: http://www.rejected.io/2014/09/netapp-cluster-mode-converting-switchless-to-switched-cluster/

Yep, that bit looks easy enough.

Assuming you have enough capacity on the new disk purchased with the 8200, your best bet is to move all the volumes to new disk and then swing the other shelves (including the converted 2552).

That might be an option. The inbuild drives on the 2552 are 4*SSD + 20*900G SAS (which house root) plus another shelf of bulk SATA storage. With the 8200 we'll have another 24*960GB SSDs, so if we have R-D2 partitioning on there then we should squeek by with enough space on the SSDs to migrate the volumes from the builtin drives - Yay!.

I think I would get all the data \ other shelves to the 8200, and then before converting the 2552 to a shelf, disable ADP and wipe disks and remove ownership. From loader, I believe the command was: setenv root-uses-shared-disks? false

Gotcha, so we wipe the builtin disks, add them back to the 8200, then we can migrate the volumes back off the SSDs and onto the SAS drives. Migrating the bulk storage shelf and SVMs should be trivial

Thanks for that rundown, seems to make sense to me.

Out of interest would this be significantly simpler if rather than using SSDs and R-D2 we had another shelf of SAS drives for dedicated root drives?

Chris