HP Hitachi Dynamic Link Manager Software - Manual (Page 44)

28 Chapter 2 HDLM Functions
When TagmaStore AMS/WMS series, Thunder 9500V Series, or Thunder 9200 are being used,
HDLM selects the switching destination from the paths that access the same LU, in the order
of owner paths and non-owner paths. For example, in Figure 2.10, the owner controller of
LU is CHA0, and access to the LU is made only via the path (A). After the access path is
placed offline, the first candidate for the switching destination is the path (B) and the
second candidate is the path (C) or (D).
When the Lightning 9900 Series, Lightning 9900V Series, TagmaStore USP, or Universal
Storage Platform V is being used, all the paths are owner paths. This means all the paths
accessing the same LU can be possible switching destinations. For example, in Figure 2.10,
the LU is accessed using only the path (A). After the access path is placed offline, the
switching destination is one of the paths (B), (C), and (D).
Figure 2.10 Path Switching