Grass Valley K2 Summit Storage Area Network v.7.1 - Manual (Page 367)

367 K2 Storage Area Network Installation and Service Manual 26 October 2009
Chapter 9 Operating the K2 SAN
K2 Media Server failover behavior
If the following system connection or component fails to respond to network
communication:
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”.
K2 RAID
K2 Media
Servers
K2 clients
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 S D I M E D I A C L I EN T
!
K2 S D I M E D I A C L I EN T
!
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
XX
X
X
X
3
4
1
2