Cache device management
Learn about cache device management in a Virtual I/O Server (VIOS) environment.
The cache device management feature creates an infrastructure to manage attached solid-state
drives (SSDs) for caching on client partitions.
Note: Cache engine is not available on the VIOS. Caching of target devices on VIOS is not supported.
Cache management concepts
- Cache device
- Is the SSD or flash disk device used for caching.
- Cache pool
- Is a group of cache devices that is only utilized for disk caching. A cache pool (or volume group) provides a simplified way to manage multiple flash disk devices. You can add additional devices to expand a cache pool, as needed. Currently, only a single cache pool is supported.
- Cache partition
- Is a logical cache device that is created out of a cache pool. A cache partition (or logical volume) provides flexibility and better utilization of flash storage for caching. It allows you to use multiple partitions / logical cache devices. Partitions can be expanded as needed for a larger working set. A cache partition should be assigned to a virtual SCSI server adapter.
The cache_mgt command provides the infrastructure required to manage caching on solid state drive (SSD) devices.
For more information, see the cache_mgt Command.
