Multiple 3510's and Point-to-Point SAN Host ID's

We have 3 different 3510's with a few expansion tray's connected to a switch that makes our SAN. I have a question about host ID's.

Do the hoost ID's have to be unique for all 3 of the 3510's? I assume yes? (these are dual controller units)

What is the default host ID?

[301 byte] By [hxman] at [2007-11-25 23:03:27]