Grass Valley K2 Storage System Instruction Manual v.3.2 Sep.24 2007 - Manual (Page 434)

434 K2 Storage System Instruction Manual September 7, 2007
Chapter 10 Installing the Level 20R Storage System
Level 20R system description
The Level 20 redundant (L20R) storage system has two Gigabit Ethernet switches
connected by Inter-Switch Links (ISLs) to support a redundant Ethernet fabric. The
storage system 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 L20R RAID supports redundant Fibre Channel
connections. Up to seven Expansion chassis are optional for increased storage
capacity.
K2 Media 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
K2 Media Clients
Gigabit Ethernet
Switches
Fi b re Ch a nnel
Control B Media B Control A Media A Control A Media A Control B Media B
Control
FTP
Media Media Control
FTP
Media Medi
a
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 S D I M E D I A C L I E N T !
K2 S D I M E D I A C L I E N T !
K2 S D I M E D I A C L I E N T
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
Medi
a
A
M E D I A S E R V E R
Fi b re Ch a nnel
Contr
ol
FTP
C
on
tro
l
F
T
P