Grass Valley K2 Summit Storage Area Network v.7.1 - Manual (Page 41)

26 October 2009 K2 Storage Area Network Installation and Service Manual 41
Level 20R system description
Level 20R system description
The Level 20R SAN has two Gigabit Ethernet switches connected by Inter-Switch
Links (ISLs) to support a redundant Ethernet fabric. The SAN also has redundant GS
K2 Media Servers. The servers are configured to have identical roles. This provides
redundancy for database, file system, iSCSI bridge, and FTP roles. One L20 RAID
supports redundant Fibre Channel connections. Up to seven 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 its 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.
RAID Primary
Chassis
RAID Expansion
Chassis (optional)
K2 Media
Servers
NH Servers
(optional)
A B
B A
Gigabit Ethernet
Switches
Fibre Channel
Control B Media B Control A Media A
Control A
Media A Control B Media B
Control
FTP
Media Media Control
FTP
Media Media
Control point PC
! 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
! 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
Control
ISLs
Control Control
FTP/streaming
Control B Media B
Control A Media A
M E D I A S E R V E R
Fibre Channel
Contr
ol
FTP
C
on
tro
l
F
TP