Migrating VMs using storage Vmotion

[gonugung431]

Alternatives (ex vVOLS) for Migrating a SQL cluster with virtual RDM via storage vmotion from one storage to another storage without downtime or pausing the standby VM?

[Scarlet Penn]

Unfortunately, Storage vMotion doesn't support migrating virtual RDMs directly. Alternatives:

1️⃣ vVols – If supported, migrate without RDMs.
2️⃣ Backup & Restore – Use SQL-native or Veeam backups.
3️⃣ Storage Replication – Sync LUNs, then reattach to new storage.
4️⃣ VMware HCX – For seamless migrations if available.

If zero downtime is a must, storage-level replication with manual failover might be your best bet! 🚀

[CriticalChance]

I assume since you are using virtual compatibility mode, you are using a SQL always on availability group, and not a traditional shared storage FCI?

If that's the case, you might be able to shutdown one of the VMs while the other VM continues to serve data, convert the disks from virtual to physical compatibility mode, boot it back up, once the database is back in sync, do the same on the other side.

Disclaimer: I am not a SQL DBA, just a storage guy.

[CriticalChance]

Replying to my own message: If it is an availability group, You might be able to just add new RDMs on the desired storage array and use SQL to re-seed the replica onto the new disks.