OSDOCS-18425# Add hyperdisk-balanced high availability support

Author: Lisa Pettyjohn

modules/persistent-storage-csi-gcp-hyperdisk-ha-overview.adoc

@@ -0,0 +1,19 @@
+// Module included in the following assemblies:
+//
+// * storage/container_storage_interface/persistent-storage-csi-gcp-pd.adoc
+
+:_mod-docs-content-type: CONCEPT
+[id="persistent-storage-csi-gcp-hyperdisk-ha-overview_{context}"]
+= Hyperdisk-balanced high availability disks overview
+
+{product-title} supports Hyperdisk Balanced High Availability volumes.
+
+Hyperdisk Balanced High Availability volumes are useful for:
+
+* Protecting your applications from a zonal outage by synchronously replicating data across two zones in the same region
+
+* When you require write access to the same volume in multiple zones
+
+For a single Hyperdisk Balanced High Availability volume, you can specify up to 100,000 IOPS and 1,200 MiB/s of throughput.
+
+To set up Hyperdisk Balanced High Availability disks, see Section _Setting up hyperdisk-balanced disks_.

storage/container_storage_interface/persistent-storage-csi-gcp-pd.adoc

@@ -42,6 +42,8 @@ include::modules/persistent-storage-csi-gcp-pd-storage-class-ref.adoc[leveloffse
 
 include::modules/persistent-storage-csi-gcp-hyperdisk-limitations.adoc[leveloffset=+2]
 
+include::modules/persistent-storage-csi-gcp-hyperdisk-ha-overview.adoc[leveloffset=+2]
+
 include::modules/persistent-storage-csi-gcp-hyperdisk-storage-pools-overview.adoc[leveloffset=+2]
 
 To set up storage pools, see xref:../../storage/container_storage_interface/persistent-storage-csi-gcp-pd.adoc#persistent-storage-csi-gcp-hyperdisk-storage-pools-procedure_persistent-storage-csi-gcp-pd[Setting up hyperdisk-balanced disks].