User`s guide

VIXEL INSPEED™ SAN STORAGE SWITCH MODEL 375 CHAPTER 3 SWITCH MANAGEMENT
USER’S GUIDE
EMBEDDED
IN THE FUTURE OF STORAGE 34
Change Notifications
The following settings are available.
Port Recovery
The following settings are available.
Setting Description
Stealth Intelligent Change
Manager
Stealth Intelligent Change Manager provides stability and control over
change notification disruptions on a port basis. Options include:
• Off: No Change Protection – no Stealth Intelligent Change Manager
control.
• Initiator: Only Receive Changes – devices attached to the port can
receive change notifications but will not propagate change notifications
generated by that port to other ports.
• Target: Only Send Changes – propagates change notifications
generated by the port to other ports but will not allow devices attached
to the port to receive change notifications from other ports.
• Switch-Switch: Send and Receive Changes – allows change
notifications to propagate between switches.
• Custom-1 – Note: This setting should not be used unless directed to do
so by a customer service representative.
Change Notification on
Insertion
The switch normally operates under the condition that when a device
is inserted onto the network, a change notification is generated.
However, this condition is not always true when connecting hubs or
switches together. In some instances, it is possible to connect two
zones together without the zones realizing that multiple AL_PAs exist
with the same values.
When this policy is enabled, the switch always generates a change
notification to ensure the proper system updates are performed.
However, when a device is removed (for example, an initiator or
target), the removal does not generate a change notification and there
are no system updates performed.
Change Notification on
Removal
This policy is similar to the Change Notification on Insertion policy,
except for the change notification being sent when a device is
removed rather than inserted.
When this policy is enabled, the switch always generates a change
notification to ensure the proper system updates are performed.
Setting Description
Bad Device Recovery When a port is already inserted into a zone, the port transforms F8
Failure notifications into F7 Initialization notifications. When this
occurs, the port is bypassed and F7 Initialization notifications are
allowed in the zone. Once the initialization is complete, the Bad Zone
Recovery Policy is operational and prevents a port that continues to
transmit F8 Failure notifications from inserting into the zone.
Note: If this policy is disabled while the Bad Zone Recovery policy is
enabled, a zone that does go down will still allow the Bad Zone Recovery
policy to reset the zone and allow ports to be reinserted.
When enabled, this policy prevents devices that send F8 Failure
notifications from inserting into a zone. The ability to remove devices
that generate F8 Failure notifications automatically and
instantaneously guarantees continual system operation.
When disabled, this policy allows devices that send F8 Failure
notifications to insert into a zone and does not consider F8 Failure
notifications when determining whether to insert a device or not.