I don't know if it really makes it any more or less simple. If you are going to end up with a long term SAS disk footprint, then if it were me, i'd rather be using those SAS disks for my root than SSDs. Sounds like you're going to have at least 20x900G SAS disks in your end-state configuration, so you might want to evaluate buying another some more SAS disk to hold that.
I haven't looked at the latest changes, but historically you had the choice of AFF or flash-pool \ hybrid aggregates. Are you sure that you are going to be able to have an all-flash shelf on the same system as hybrid \ spinning-disk shelves? As of 6 months ago, this didn't fly.
On Tue, Mar 28, 2017 at 4:03 PM, Chris Good chris@g2.nu wrote:
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/20 14/09/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