topic Conversion of 32-bit aggregates to 64-bit in ONTAP Discussions

Conversion of 32-bit aggregates to 64-bit

Naveenpusuluru — Wed, 04 Jun 2025 19:07:22 GMT

Hi Techies I am planning to migrate all the luns and volumes from my legacy 7-mode systems to new cluster mode systems. But my 7-mode system is running on very older ontap version and also it has 32-bit aggregates. Can you guys please let me know how to proceed with it. Please find the details below.

7-mode ontap version : 7.3.2

7-mode box model : FAS3020

c-mode ontap version : 8.3.1

c-mode box model : FAS8040

Do i need to upgrade the 7-mode ontap version to 8.1.4 + to perform this conversion of 32-bit aggregates to 64-bit?

Re: Conversion of 32-bit aggregates to 64-bit

SeanHatfield — Tue, 13 Sep 2016 21:26:33 GMT

A FAS3020 can't run anything newer than 7.3.7. Foreign Lun Import could bring the LUNs over without requiring the 64bit conversion on the source. Other options include host/application based migrations (Storage vMotion, etc) or doing an intermediate headswap to a controller that can run 8.1.4P4.

Re: Conversion of 32-bit aggregates to 64-bit

Naveenpusuluru — Wed, 14 Sep 2016 14:03:30 GMT

Hi @SeanHatfield

Can you please send me the process of Foreign Lun Import.

Re: Conversion of 32-bit aggregates to 64-bit

SeanHatfield — Wed, 14 Sep 2016 15:24:40 GMT

Just about everything you could want to know is in TR-4380

http://www.netapp.com/us/media/tr-4380.pdf

It was also the topic of a recent Tech ONTAP podcast:

http://community.netapp.com/t5/Technology/Tech-ONTAP-Podcast-Episode-55-Foreign-LUN-Import/ba-p/122815