Preview: You can create regional disks, including Hyperdisk Balanced High Availability volumes, by

## Feature Feature **Preview**: You can create regional disks, including Hyperdisk Balanced High Availability volumes, by cloning a zonal boot disk. For more information, see[Duplicate a disk with clones](https://cloud.google.com/compute/docs/disks/clone-duplicate-disks). ## Change Change If you try to create an on-demand reservation or increase the number of reserved Compute Engine instances in a reservation when the zone has reached its reservation capacity limit for your requested machine family, then the request fails with a `RESERVATION_CAPACITY_LIMIT_EXCEEDED` error. For more information, see[Reservation capacity limit exceeded](https://cloud.google.com/compute/docs/troubleshooting/troubleshooting-reservation-creation#reservation-capacity-limit-exceeded).