Dell Host Bus Adapter User's Guide HBA 355 and 350 Series

Multipath support on Dell HBA355e Adapter

When set up for multipath systems, the HBA355e Adapter controllers may access physical drives through multiple paths to provide path redundancy and load balance to the drives. However, the controller does not manage these paths; this function is controlled by the multipath layer in the host operating system. As a result, in a multipath configuration, each separate path to a drive is treated as an independent drive and a single drive may be presented in the operating system as multiple drives. To avoid complications from having multiple paths to a drive, path management software is necessary to map these multiple paths to the same single drive. This chapter covers multipath management options for different operating systems and management interfaces.