Download vt-100 utility configuration

Assigning Volume to Dual Controllers
When a ARC-8366-VOL#003 is created and mapped to both Ctrl1
and Ctrl2 host channels, this volume will work under “Active-toActive” or “Active-to-Standby” configuration.
7.2.2 Active-to-Active Configuration
Active-to-Active arrays use two controllers to service read/write
requests to the same LUN. The use of two active controllers gives
a number of benefits, the primary being the ability to load balance I/O to the array-using host-based software.
7.2.3 Active-to-Standby Configuration
Active-to-Standby configurations will have a LUN “owned” by one
of dual redundant controllers. When the controller which owns
a LUN fails or the host loses access to that controller, the other
(standby) controller takes ownership of the LUN and host IO is
then serviced from this new controller.
7.3 Forcing Controller Failover for Testing
There are 2 methods to test/simulate dual redundant controller
failure. Those methods are performed for testing the dual redundant controller functionality before any critical data is committed to
the drives. Testing the failover functionality can be performed using
the following methods.
7.3.1 Pulling out one of the controllers from the
carrier
If the one of the active controller is physically removed from the
carrier, a switchover will occur and take over the I/Os jobs of the
failed controller.
(1). Loosen the thumbscrew on either any of the two controller
carriers. Pull out the lever slowly and the alert beeper indicates
controller failure. The existing controller will then act as both controllers and take over the I/Os jobs.
(2). Unplug all interface cables on the “failed” controller and pull
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