topic Re: snapmirror matrix in ONTAP Discussions

snapmirror matrix

leedm — Wed, 13 Nov 2024 01:02:11 GMT

Hello, I'm going to migrate from 8.2.1 cluster mode 4 node controller to new equipment, what are some ways to migrate from 8.2.1 to 9.15 os?
7 mode to cdot snapmirror is only available in 7 mode and there is no 8.2.1 information in the matrix of cdot to cdot snapmirror

Re: snapmirror matrix

SpindleNinja — Wed, 13 Nov 2024 01:15:22 GMT

There's a very long stretch... I don't think there is one controller model that exists that supports both 8.2 and 9.15.
Which model controller do you have?

Re: snapmirror matrix

TMACMD — Wed, 13 Nov 2024 01:49:53 GMT

if you are using 8.2.1, you are probably using at best some variant of the FAS80x0 series (8020/8040/8060). This platform tops out at ONTAP 9.8. I have done a few upgrades this year. Get the current cluster to ONTAP 9.8 and depending on the new equipment, you may be able to "down-rev" the new nodes to 9.10.1P(latest) and use a mixed-version cluster. vol-move everything off to the new nodes, evacuate and remove the old nodes.

There is a lot more to it than that though.

What is the starting hardware? What is the new hardware?

Re: snapmirror matrix

leedm — Wed, 13 Nov 2024 02:08:59 GMT

We plan to proceed with FAS70 or FAS2820, but it's not confirmed yet

Re: snapmirror matrix

leedm — Wed, 13 Nov 2024 02:13:53 GMT

The source equipment is FAS3250 4node and the destination equipment is probably FAS70 or FAS2820.

Re: snapmirror matrix

Sergey_Osipov — Wed, 13 Nov 2024 09:55:15 GMT

It is possible still to migrate datafrom 7-mode to up to 9.11.1

https://kb.netapp.com/on-prem/ontap/DP/SnapMirror/SnapMirror-KBs/What_are_the_restrictions_of_TDP_relationships

The relationships between 7-Mode and ONTAP clusters are supported only for transition/migration thru 9.11.1
Support for TDP was dropped in ONTAP 9.12.1 and later

Re: snapmirror matrix

TMACMD — Wed, 13 Nov 2024 12:39:21 GMT

Is the source 7-mode or cluster?

Saying a 4-node cluster indicates cluster mode as 7-mode only operates in ha pairs.

if the answer is cougar mode the accepted answer is incorrect

Re: snapmirror matrix

TMACMD — Wed, 13 Nov 2024 16:47:47 GMT

sorry about that.

if the answer is CLUSTER mode the accepted answer is incorrect

Re: snapmirror matrix

Sergey_Osipov — Wed, 13 Nov 2024 19:28:25 GMT

feels like you are right. I'm a bit confused and misinterpreted the original query as the source is 7-mode system

In this case we need to check the maximum possible ONTAP for 3250

which is 9.1 and for 2820 the lowest ONTAP is 9.13.1 (fas70 starts with 9.15.1)

We definitely do NOT support snapmirror between such a huge version difference

Re: snapmirror matrix

TMACMD — Wed, 13 Nov 2024 20:29:03 GMT

It might be worth working with NetApp.

Get a hold of a Unit that supports 9.11 (Like a FAS2720).

Build on 9.11.

Add the FAS2820 into the cluster (mixed version allowed), transition all the data over.

once the data is over, upgrade the entire cluster to 9.15. Then add in the A70 in mixed-version.

(note, I hear there are issues mixing anything higher than 9.13 with something lower, hence this method)

move any volumes off the FAS2720 and then eject the nodes from the cluster.

Re: snapmirror matrix

leedm — Wed, 13 Nov 2024 23:59:37 GMT

I'm sorry, I think I asked you the wrong question.
The source is 8.2.1 cluster mode 4 node.

Re: snapmirror matrix

leedm — Thu, 14 Nov 2024 01:59:06 GMT

I'm sorry, I think I asked you the wrong question.
The source is 8.2.1 cluster mode 4 node.

Re: snapmirror matrix

leedm — Mon, 18 Nov 2024 00:07:28 GMT

Do you mean to change from FAS32504 node to 2750 through head swap?

Re: snapmirror matrix

TMACMD — Mon, 18 Nov 2024 00:31:25 GMT

Not like you are thinking.
get a pair of 2720 controllers. Use those in place of the 2820. Load 9.11. Migrate data. Then head swap to 2820

Re: snapmirror matrix

leedm — Mon, 18 Nov 2024 00:48:26 GMT

I think we can proceed in that order.

Thank you for your advice.