topic Re: about aggregation in ONTAP Hardware

about aggregation

Enpro — Thu, 22 Nov 2018 11:16:23 GMT

Good day!

Question about aggregation

I have a fas 2720 with 2 controllers and 12 disks. Each controller has 6 disks.
If I create aggregation: 2 aggregations of 6 disks each.

I can assign the owners of these disks to one controller, but then the entire load will be on one controller?

How can I make one aggregation on all disks using the power of two controllers?

Re: about aggregation

jcbettinelli — Thu, 22 Nov 2018 11:37:25 GMT

Hello,

You won't be able to have one single aggregate assigned to two controllers.

One aggregate is assigned to only one controller at a time. It can be re-assigned, but not used by two controllers.

With your system, you should be able to use ADP, partitioning, which at least, should allow to use the 12 disks on the 2 systems by creating partitions. One small partion of the disk assigned to the root aggregate, one partition to controller 1 and the last partition to controller 2.

If you want to have the maximum capacity on only 1 aggregate, I would recommed to go to an Active/Passive configuration where the second controller doesn't have any data aggregate (only root aggregate), and would be only active in a Failover situation.

http://docs.netapp.com/ontap-9/topic/com.netapp.doc.dot-cm-concepts/GUID-B745CFA8-2C4C-47F1-A984-B95D3EBCAAB4.html

http://docs.netapp.com/ontap-9/topic/com.netapp.doc.dot-cm-psmg/GUID-4AC35094-4077-4F1E-8D6E-82BF111354B0.html

Re: about aggregation

Ashun — Mon, 06 Jan 2025 09:23:50 GMT

aggr can't belong to two nodes at the same time, you can divide all the drives into one node, maybe that's the idea

1. Move volumes from the aggr of node2 to the aggr of node1
2. Reassign the drive to node1.
3. Add the drive to the aggr of node1