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DuraStor 412R/6320SS/7320SS Installation and User’s Guide
Operating Modes Overview
The operating modes let you configure the RAID controllers to
support a variety of host environments.
■
Stand-alone single-port
—Use this mode when you have a
single RAID controller and require single-HBA host access.
There will be several cabling schemes to choose from when you
setup this operating mode.
■
Stand-alone dual-port
—Use this mode when you have a single
RAID controller and require dual-HBA host access, or two
independent host access. There will be several cabling schemes
to choose from when you setup this operating mode.
■
Active-active single-port
—Use this mode when you have two
RAID controllers and require both controllers to be active and
processing host I/O operations. This operating mode uses one
channel on each of the RAID controllers and supports single or
dual host system connections. There are several cabling
schemes when setting up the single host system or dual host
systems.
■
Active-active dual-port
—(
DuraStor 7320SS only
.) Use this mode
when you have two RAID controllers and require both
controllers to be active and processing host I/O operations. This
operating mode uses both FC host ports of each RAID controller
and supports single or dual host system connections. There are
several cabling schemes when setting up the single host system
or dual host systems.
■
Active-passive dual-port
—Use this mode when you have two
RAID controllers and require only one RAID controller to be
active. The other controller is in a passive mode as a “hot”
standby. This operating mode supports single or dual host
system with several cabling schemes. It does not provide the
performance compared to either of the active-active modes.
The naming conventions are broken down into two parts: the first
part refers to the number of controllers and their state, and the
second part refers to the state of the controller’s host ports (not to
be confused with the physical I/O ports).
Stand-alone designates a single controller system, and active-active
or active-passive designates a dual controller system.
DuraStor IUG - Online.book Page 2 Friday, July 19, 2002 3:06 PM