Generally available: Z3 machine types that have 8 to 44 vCPUs can use

## Feature Feature **Generally available**: Z3 machine types that have 8 to 44 vCPUs can use Hyperdisk Balanced High Availability volumes to synchronously replicate data across two zones. For more information, see[About Hyperdisk Balanced High Availability](https://cloud.google.com/compute/docs/disks/hd-types/hyperdisk-balanced-ha). ## Feature Feature **Preview**: External IPv6 addresses are now supported for[Standard Tier](https://cloud.google.com/network-tiers/docs/overview#standard%5Ftier). For more information, see [IPv6 subnet ranges](https://cloud.google.com/vpc/docs/subnets#ipv6-ranges).