Grass Valley K2 Summit Storage Area Network v.7.1 - Manual (Page 49)

26 October 2009 K2 Storage Area Network Installation and Service Manual 49
L35R system description
L35R system description
This section describes the K2 Level 35 Redundant (L35R) SAN.
The Level 35 SAN has two Gigabit Ethernet switches connected by Inter-Switch
Links (ISLs) to support a redundant Ethernet fabric. The SAN also has four GS K2
Media Servers, one optional NH1-10GE K2 Media Server, and one L30 RAID
chassis. Up to eleven RAID Expansion chassis are optional for increased storage
capacity.
K2 clients have a pair of redundant (teamed) Gigabit Ethernet ports for control and
two Gigabit Ethernet ports (A and B) for media (iSCSI). Each port of the control team
is connected to a different switch. The A media port goes to the A GigE switch and
the B media port goes to the B GigE switch. The GigE switches are configured with
V-LANs to keep the control/FTP and media (iSCSI) traffic separate.
Each GS K2 Media Server has two GigE connections for media (iSCSI), one GigE
connection for control, one GigE connection for FTP, and one Fibre Channel
connection to the RAID storage. All GigE connections on a server go to the same
GigE switch. The server hosts a dual-port iSCSI interface card for the GigE media
connections and a Fibre Channel card for the RAID storage connection. The iSCSI
interface card provides a bridge between GigE iSCSI and Fibre Channel SCSI. The
server also hosts software components that allow it to function in various roles,
including media file system manager, media database server, and FTP server.
Redundant K2 Media Servers are connected by a serial cable which supports the
heartbeat signal required for automatic system recovery (failover) features.
The SAN is redundant in that it has an A side and a B side, with each side providing
complete and identical functionality. Server roles are distributed between the two GS
K2 Media Servers on each side. In this way the Level 35 system is similar to the Level
NH1-10GE
Server (optional)
K2 M E D I A S E R V E R
Control
FTP
Fibre Channel Fibre Channel
L30 RAID Primary
Chassis
RAID Expansion
Chassis (optional)
1A
A B
2A 1B 2B
Gigabit Ethernet Switches
Control A Media A Control A Control B Media A Media B Control B Media B
Control
FTP
Media Media Control Media Media Control
FTP
Media Media Control Media Media
Control point PC
! K2 S A S S T O R A G E
K2 clients
K2 SUMMIT PRODUCTION CLIENT K2 SUMMIT PRODUCTION CLIENT K2 SUMMIT PRODUCTION CLIENT
K2 M E D I A S E R V E R K2 M E D I A S E R V E R K2 M E D I A S E R V E R K2 M E D I A S E R V E R
Control
ISLs
Control Control
FTP/streaming
Control B Media B Control A Media A
! K2 S A S S T O R A G E
! K2 S A S S T O R A G E
! K2 S A S S T O R A G E
GS K2 Media
Servers