Overview of Sun StorageTek Availability Suite Data Replication

This section provides an overview of Sun StorageTek Availability Suite resource groups.

Sun StorageTek Availability Suite Lightweight Resource Groups

To a protection group, you can add a device group that is controlled by the Sun StorageTek Availability Suite software. The Sun Cluster Geographic Edition software creates a lightweight resource group for each device group. The name of a lightweight resource group has the following format:

AVSdevicegroupname-stor-rg

For example, a device group named avsdg that is controlled by the Sun StorageTek Availability Suite software has a lightweight resource group named avsdg-stor-rg.

The lightweight resource group collocates the logical host and the device group, a requirement of data replication with the Sun StorageTek Availability Suite remote mirror software.

Each lightweight resource group contains two resources:

• A logical hostname resource for the local logical host that is used for replication of the device group. The name of this resource has the following format:

  SSEdevicegroup-lh

• An HAStoragePlus resource for controlling the collocation of the device group with the lightweight resource group. The name of this resource has the format AVSdevicegroupname-stor.

For more information about lightweight resource groups, see the Sun StorageTek Availability Suite documentation.

Sun StorageTek Availability Suite Replication Resource Groups

When a device group that is controlled by the Sun StorageTek Availability Suite software is added to a protection group, the Sun Cluster Geographic Edition software creates a special replication resource for that device group in the replication resource group. By monitoring these replication resource groups, the Sun Cluster Geographic Edition software monitors the overall status of replication. One replication resource group with one replication resource is created for each protection group.

The name of the replication resource group has the following format:

AVSprotectiongroupname-rep-rg

The replication resource in the replication resource group monitors the replication status of the device group on the local cluster, which is reported by the Sun StorageTek Availability Suite remote mirror software.

The name of a replication resource has the following format:

AVSdevicegroupname-rep-rs