Service manual

2. Start and log on to the SNMP manager.
3. The SNMP manager reports devices as ofine. As each device of the K2 SAN is powered on,
check the SNMP manager to verify the device’s status.
Failover behaviors
If a fault occurs and one of the failover mechanisms is triggered, an online redundant iSCSI K2
SAN behaves as explained in the following sections.
The diagrams that follow are representative of a generic redundant K2 SAN. Some details, such as
the number of media connections, might not be the same as your K2 SAN. These diagrams illustrate
the media (iSCSI) and control paths as they interact with the redundant K2 Media Servers in their
role of media le system/metadata server and iSCSI bridge. Interactions of FTP trafc and/or paths
involving K2 Media Servers with other roles are not illustrated.
Pre-failover behavior
K2 RAID
K2 Media
Servers
K2 SAN-attached systems
Ethernet
switches
A
A
B
B
Fibre Channel
connections
Control
Media
Control
Media
Control
FTP
Media
Control
FTP
Media
ISLs
The system operates initially with both media and control trafc on GigE switch “A” and K2 Media
Server “A”. Media (iSCSI) trafc is using media network “A”. The iSCSI adapters (TOEs) on the
“A” K2 Media Server provide access to the Fibre Channel connected RAID storage. K2 Media
Server “A” is the media le system/metadata server.
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Operating the K2 SAN