- Sun Storage Virtual Tape Library VTL User Guide

Key VTL features and options
10 VTL User Guide • May 2008 G • 96267
includ in g thedeviceinquestion,thefailureislocaltotheprimary,andthe
secondary initiatesfailover.Ifthesecondarycannotaccessdevices,theoutageis
global,andnofailoveroccurs.
Service IP addresses carry heartbeat information between VTL nodes and management IP addresses carry
commands between nodes and VTL management consoles
Managementpathfailover
Whenahigh‐availabilityVTLsystemfailsover,thefailoverserverautomatically
inheritsthefailedserver’smanagementIPaddress,sothatremotemanagement 
consolescanstillreachtheVTLsystem. 
If the heartbeat signal is lost, the management IP address for the failed node transfers to the healthy node
management_IP_address_1
management_IP_address_2
service_IP_address_1
service_IP_address_2
heartbeat
heartbeat
management
console 1
management
console 2
management_IP_address_1
management_IP_address_2
service_IP_address_1
service_IP_address_2
management_IP_address_2
management
console 1
management
console 2