topic Re: Usable Space FAS 2552 C-mode in ONTAP Discussions

Usable Space FAS 2552 C-mode

rakeshbhuvad — Mon, 12 Jun 2017 11:29:36 GMT

Hi,

we have newly install NetApp FAS-2552 2 node cluster with 12 Disk 1.2TB HDD, OS Ontap 9.1 C-mode, what is a best practice to get maximum space.

currently assgin 6 disk each node, per node i get 2.56TB usable space, how can i get meximum space

need help

Re: Usable Space FAS 2552 C-mode

robinpeter — Mon, 12 Jun 2017 17:04:25 GMT

FAS2552 with 12 X 1.2 TB Disk.. using ADP to maximize the disk space.

you can space them two different way.

I just run this using netapp-sysnergy and here is the screenshot of the reports.

FAS2552 with 12 X 1.2TB HDD

Option : 1

While you create 1 Root aggr and 1 Data aggr on Each node. (to maximize the CPU Usage)

As you can see the above configuration give you exactly the same amount of space on each node.. but it lost 2 parity disk and 1 spare on each node.. So total you lost 6 disk worth of space. (which is almost half of what you have, and may not be ideal for your case)

Option : 2

Create root aggr for both node..

But use the renamining disks to create one large aggr on one of the node. (7.69TB total usable space)

Advantages :-

Aggr is larger.

Disadvantages:-

You are not using most part of the CPU resources on node-2

If you don't need all the CPU resources the 2nd node can provide, you may choose the Option-2

I know few of customers choose this option after considering their Storage Resources usage.

hope this help

thanks,

Robin.

Re: Usable Space FAS 2552 C-mode

rakeshbhuvad — Tue, 13 Jun 2017 06:21:34 GMT

Hello Robin,

Thanks for reply,

how to create one big aggregate, 6-6 disk distributed each not, I did not get option to create one aggregate.

Regards

Rakesh Bhuvad

Re: Usable Space FAS 2552 C-mode

robinpeter — Tue, 13 Jun 2017 16:04:02 GMT

You might have to use vol-move or remove the data from one of the aggr.. (eg:- node2-aggr)

offline and delete the aggr, that will bring all those 6 data disk on that node as spare disks.

Then you can re-assign those disk to other node.. before you add them to the aggr..

make sure you verify/modify the raid-group.

As long as you have enough room in node1-aggr to move the data from node2-aggr, you can do this process non-disruptively.

Robin.

Re: Usable Space FAS 2552 C-mode

SoumilBhatt — Fri, 19 Jun 2020 18:20:32 GMT

Can it be apply of FAS 2720 C-Mode Ontap 9.6 also?

Can you provide full steps or commands to do it