storage failover hwassist commands

In a high-availability configuration, a storage controller monitors its partner's health using heartbeats. On storage controller failures, the takeover starts after a storage controller misses several heartbeats - which by default can take up to 15 seconds after the failure occurs. When the hardware-assisted takeover (hwassist) feature is enabled, the service processer of the storage controller (SP, RLM or BMC) is able to detect various failures, such as: Power Loss, Power Cycle, and POST Error. In these cases, the failover detection time is less than a second, allowing the takeover to start much sooner. Use the "storage failover modify" command to configure the hwassist feature.