We just completed a migration with more storage than that… 250+ lpars
Look into Amazon’s snowball… they have an 80TB and a 220TB (I think were the sizes)…
the 200+ version was much faster..
you create an S3 bucket, they ship you a box, you plug it in… connect it to your network… NFS mount it to your AIX hosts.. copy all the storage..
ship it back to AWS… they unload it into your S3 bucket.
We had an EFS mounted on our AIX hosts… we dumped the oracle incremental backups there, while the snowball was en-route, and getting restored in the cloud.
Tom