Grass Valley K2 Summit Storage Area Network Installation - Manual (Page 255)

K2 Media Server failover behavior
If the following system connection or component fails to respond to network communication:
Either of the Media (iSCSI) network “A” connections between the GigE switch and the K2
Media Server
The control connection between GigE switch “A” and K2 Media Server “A”
K2 Media Server “A”
The Fibre Channel connection between K2 Media Server “A” and RAID controller “A”
Then the following failover behavior occurs:
1. The media file system (SNFS) and media database on K2 Media Server “A” fail over and K2
Media Server “B” becomes the active media file system/metadata server.
2. All K2 clients drop communication on the “A” media port and begin using the “B” media port,
finding a path through GigE switch “B” to K2 Media Server “B”. All K2 clients use an iSCSI
adapter (TOE) on the “B” K2 Media Server to provide access to the Fibre Channel connected
RAID storage.
3. All K2 clients keep communicating on the same control port, finding a new path through GigE
switch “A” and across an ISL to GigE switch “B” to reach K2 Media Server “B”.
18 November 2010 K2 SAN Installation and Service Manual 255
Operating the K2 SAN