topic Re: Data migration from 32bit aggregate to 64bit aggregate in ONTAP Discussions https://community.netapp.com/t5/ONTAP-Discussions/Data-migration-from-32bit-aggregate-to-64bit-aggregate/m-p/11232#M2578 <HTML><HEAD></HEAD><BODY><P>Hello Sachin,</P><P></P><P>If you can wait to migrate your data for a few more months, Data ONTAP 8.1 may have a 32 - 64-bit conversion feature that will save you from migrating data (It's on the roadmap, but like all things feature related - there are no guarantees when it will be released) If you need to move your data in the immediate future, the best option is Qtree SnapMirror (QSM).&nbsp;&nbsp; The process to migrate data and retain your snapshots is very similar to migrating from a Traditional Volume to a FlexVol.&nbsp; This KB article below has a lot of good detail on how to do that.&nbsp; The bad news is, be prepared to do a LOT of QSM migrations.&nbsp; Unless you need all of your hourly and daily snapshots, I would recommend only doing the last 24 hours of hourly, last 6 days of daily, and then the last 2 weekly snapshots.&nbsp; Over 90% of data restore requests are for the previous 2 weeks. Rely on tape or DR copies for requests beyond that.</P><P></P><P><A href="https://kb.netapp.com/support/index?page=content&amp;id=1012182" target="_blank">https://kb.netapp.com/support/index?page=content&amp;id=1012182</A></P><P></P><P></P><P>If you can afford to take some downtime (and have a lot of disks), an alternative would be to disable all services, SnapMirror the active filesystems for each volume to your 64-bit aggregates, point all your CIFS shares/NFS exports to the new volumes, then renable all services.&nbsp; Hold onto the 32-bit aggregates until all the snapshots roll off (put the volumes in restricted mode to make sure no one can write to the volumes).&nbsp; It's essentially the same thing you do when transitioning to a new backup application - hold onto the old backup server and tapes to fulfill restore requests until the retention period is met. </P></BODY></HTML> Fri, 06 May 2011 14:31:59 GMT mcope 2011-05-06T14:31:59Z Data migration from 32bit aggregate to 64bit aggregate https://community.netapp.com/t5/ONTAP-Discussions/Data-migration-from-32bit-aggregate-to-64bit-aggregate/m-p/11228#M2576 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P>We are planning data migration from 32bit aggregate to 64bit aggregate. We have many volumes with the snapshots.</P><P>Which all options are available to migrate data from 32bit aggregate to 64bit aggregate with snapshots and less downtime?</P><P></P><P>Thanks,</P><P>Sachin</P></BODY></HTML> Thu, 05 Jun 2025 06:55:15 GMT https://community.netapp.com/t5/ONTAP-Discussions/Data-migration-from-32bit-aggregate-to-64bit-aggregate/m-p/11228#M2576 shindesac 2025-06-05T06:55:15Z Re: Data migration from 32bit aggregate to 64bit aggregate https://community.netapp.com/t5/ONTAP-Discussions/Data-migration-from-32bit-aggregate-to-64bit-aggregate/m-p/11232#M2578 <HTML><HEAD></HEAD><BODY><P>Hello Sachin,</P><P></P><P>If you can wait to migrate your data for a few more months, Data ONTAP 8.1 may have a 32 - 64-bit conversion feature that will save you from migrating data (It's on the roadmap, but like all things feature related - there are no guarantees when it will be released) If you need to move your data in the immediate future, the best option is Qtree SnapMirror (QSM).&nbsp;&nbsp; The process to migrate data and retain your snapshots is very similar to migrating from a Traditional Volume to a FlexVol.&nbsp; This KB article below has a lot of good detail on how to do that.&nbsp; The bad news is, be prepared to do a LOT of QSM migrations.&nbsp; Unless you need all of your hourly and daily snapshots, I would recommend only doing the last 24 hours of hourly, last 6 days of daily, and then the last 2 weekly snapshots.&nbsp; Over 90% of data restore requests are for the previous 2 weeks. Rely on tape or DR copies for requests beyond that.</P><P></P><P><A href="https://kb.netapp.com/support/index?page=content&amp;id=1012182" target="_blank">https://kb.netapp.com/support/index?page=content&amp;id=1012182</A></P><P></P><P></P><P>If you can afford to take some downtime (and have a lot of disks), an alternative would be to disable all services, SnapMirror the active filesystems for each volume to your 64-bit aggregates, point all your CIFS shares/NFS exports to the new volumes, then renable all services.&nbsp; Hold onto the 32-bit aggregates until all the snapshots roll off (put the volumes in restricted mode to make sure no one can write to the volumes).&nbsp; It's essentially the same thing you do when transitioning to a new backup application - hold onto the old backup server and tapes to fulfill restore requests until the retention period is met. </P></BODY></HTML> Fri, 06 May 2011 14:31:59 GMT https://community.netapp.com/t5/ONTAP-Discussions/Data-migration-from-32bit-aggregate-to-64bit-aggregate/m-p/11232#M2578 mcope 2011-05-06T14:31:59Z