Grass Valley K2 Storage System Instruction Manual v.3.1 - Manual (Page 150)

150 K2 Storage System Instruction Manual September 6, 2006
Chapter 5 Installing the Level 3 Storage System
Level 3 system description
The Level three storage system has two K2 media servers, between which the media
server roles are distributed. Typically one media server runs as the media file system
and database server while the other media server runs as the FTP server. This boosts
performance, as the system resources of each server can be optimized for specific
roles. In addition, both servers take the role of iSCSI bridge, so that there are a total
of four iSCSI media connections for increased bandwidth.
The Level three storage system has one L3 RAID chassis. Up to seven optional
Expansion chassis are available for increased storage capacity.
K2 Media Clients and other iSCSI clients, such as Aurora Edits, are connected to the
GigE switch. Each client has one GigE connection for media and one GigE
connection for control. The GigE switch is configured with V-LANs to keep the
traffic on these connections separate.
Each K2 Media Server has two GigE connections for media, one GigE connection for
control, and one Fibre Channel connection to the RAID storage. Only the K2 Media
Server in the role of FTP server has the GigE connection for FTP. K2 Media Servers
host iSCSI interface cards for the GigE media connections and a Fibre Channel card
for the RAID storage connection. The iSCSI interface cards provide a bridge between
GigE iSCSI and Fibre Channel SCSI. Each media server also runs the software
components that allow it to function in its specific roles.
The L3 RAID chassis is connected via a Fibre Channel connection to each media
server. These connections access the disks simultaneously, providing increased
bandwidth. The L3 RAID chassis is also connected to the GigE control network,
which is required for SNMP (NetCentral) monitoring.
L3 RAID chassis
L3 RAID Expansion
chassis (optional)
K2 media
servers
Multiple iSCSI clients
Gigabit Ethernet switch
1 2
Fibre Channel
connections
Control Media Control Media Control Media
Control Control Media
POWER SERVICE K2 RAID STORAGE !
POWER SERVICE K2 RAID STORAGE !
POWER SERVICE K2 RAID STORAGE ! POWER SERVICE K2 RAID STORAGE !
! ! !
Media
Control point PC
Control
FTP
Media Media
Control
FTP/streaming