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Planning and Administering Data Services for Oracle® Solaris Cluster 4.4

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Updated: November 2019
 
 

Understanding HAStoragePlus

The HAStoragePlus resource type can be used to configure the following options.

  • Coordinate the boot order of disk devices and resource groups. Other resources in the resource group that contain the HAStoragePlus resource are brought online only after the disk device resources become available.

  • With AffinityOn set to True, enforce colocation of resource groups and device groups on the same node. This enforced colocation enhances the performance of disk-intensive data services.

  • Monitor entities managed by the HAStoragePlus resource, including global devices, file systems, and ZFS storage pools.

In addition, HAStoragePlus is capable of mounting local and global file systems. For more information, see Planning the Cluster File System Configuration.


Note -  If the device group is switched to another node while the HAStoragePlus resource is online, AffinityOn has no effect. The resource group does not migrate with the device group. However, if the resource group is switched to another node, the setting of AffinityOn to True causes the device group to follow the resource group to the new node.

See Synchronizing the Startups Between Resource Groups and Device Groups Using HAStoragePlus for information about the relationship between device groups and resource groups.

See Enabling Highly Available Local File Systems for procedures for mounting file systems, such as ZFS in a local mode. The SUNW.HAStoragePlus(7) man page provides additional details.