Grass Valley K2 Summit Storage Area Network v.7.1 - Manual (Page 365)

365 K2 Storage Area Network Installation and Service Manual 26 October 2009
Chapter 9 Operating the K2 SAN
Control team failover behavior
If the following system connection fails to respond to network communication:
• The control connection between a K2 client and GigE switch “A”.
Then the following failover behavior occurs:
1. The control team on the K2 client fails over and communication begins on the other
control port.
2. The control communication finds a path through GigE “B” switch and across an
ISL to GigE switch “A” to reach the same control port on the same K2 Media
Server.
3. Media (iSCSI) traffic keeps using the same path.
4. K2 Media Server “A” is still the media file system/metadata server. The media file
system (SNFS) and media database do not fail over.
5. The other K2 clients (not affected by the connection failure) keep using the same
paths for media and control, as in the previous diagram “Pre-failover behavior” .
K2 RAID
K2 Media
Servers
K2 client
Connection
Failure
Gigabit
Ethernet
switches
A
A B
B
Fibre Channel
connections
Control
Media
Control
Media
Control
FTP
Media
Media
! K2 S A S S T O R A G E
! K2 S D I M E D I A C L I EN T
K2 M E D I A S E R V E R
Control
FTP
Media
Media
K2 M E D I A S E R V E R
ISLs
X