GRASS VALLEY K2 SAN, Installation And Service Manual

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(ISLs or trunks) to provide redundant paths for control network traffic. On a redundant K2 SAN,
devices are on the control network as follows:
• Shared Storage K2 client - The two control GigE ports are configured as a team. The control
team shares a single IP address. One port of the team is on the A side and the other port of the
team is on the B side.
• K2 Media Server - Redundant K2 Media Servers with role of media file system/metadata server
are balanced between the A and B sides. One server is on the A side and the other server is on
the B side. K2 Media Servers with other roles, such as FTP server, are likewise balanced between
A and B sides.
• K2 RAID - When a K2 RAID device has redundant controllers, controller 0 is on the A side and
controller 1 is on the B side.
• Ethernet switch - For control and configuration, the A switch is on the A side and the B switch
is on the B side
Streaming/FTP network description
The streaming/FTP network is for media transfers and FTP traffic. The streaming/FTP network
network traffic must be separated from the control network traffic and the media (iSCSI) network
traffic. This separation may be provided by different subnets, VLANs, or physical switch fabrics.
The control network and the streaming/FTP network, if on different subnets, may be on the same
VLAN. The control network and the media (iSCSI) network must not be on the same VLAN. Static
IP addresses with name resolution via host files are recommended for the streaming/FTP network.
Hostnames of network adapters that are dedicated to the streaming/FTP network must be aliased in
the hosts file with the
_he0
suffix. This directs the streaming traffic to the correct port.
The streaming/FTP network applies to both online and nearline K2 SANs. For nearline systems,
this is the primary network for moving media to and from the storage system.
Redundant K2 SANs have one streaming/FTP network with hardware separated into an A side and
a B side. There is an A Ethernet switch and a B Ethernet switch. Switches are connected by
InterSwitch Links (ISLs) to provide redundant paths for streaming/FTP traffic.
Only those K2 devices that host a K2 FTP interface are on the streaming/FTP network, as follows:
• K2 Media Servers - Those with the role of FTP server are connected via their dedicated FTP
port. On a redundant K2 SAN, if you have multiple K2 Media Servers with role of FTP server,
balance servers between the A and B sides.
• Stand-alone K2 clients - While not a part of a K2 SAN, stand-alone K2 clients can also be on
the streaming/FTP network. Connect to the dedicated FTP port.
NOTE: Shared storage K2 clients are not on the streaming/FTP network. They do not have a
FTP interface and they do not send or receive streaming/FTP traffic.
Automatic FTP server failover is not provided by the K2 SAN. If you require automatic failover to
a redundant FTP server for your streaming/FTP traffic, you must provide it through your FTP
application.
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Preparing for installation