It allows Compaq's RAID storage systems to be cabled on two independent busses, using two separate host bus adapters in a single server. When combined with the inherent fault-tolerant features of the RAID Array, this configuration effectively eliminates single points of failure in the storage system. This process is called failover, and requires no resource downtime and ensures high availability of data.
Load balancing can improve the server's ability to manage heavy storage loads.
Online path recovery, after a path is repaired, reduces planned outages. Lower financial losses associated with downtime.