Grass Valley K2 Summit Storage Area Network v.7.1 - Manual (Page 498)

July 15, 2008 K2 Storage System Instruction Manual 498
Workgroup storage system description
The purpose of K2 Workgroup storage is to provide a large pool of storage for files
edited by Non-Linear Editors, such as Aurora Edit, Macintosh Final Cut Pro and/or
Edius editors. K2 Workgroup storage can be basic (non-redundant) or redundant.
Basic Workgroup storage has one Gigabit Ethernet switch. Redundant Workgroup
storage has two Gigabit Ethernet switches, connected by Inter-Switch Links (ISLs) to
support a redundant Ethernet fabric.
Workgroup storage has one (basic) or two (redundant) NH K2 Media Servers. These
can be NH1 (one Gig FTP bandwidth) or NH1-10GE (ten Gig FTP bandwidth)
servers, but both NH servers on a system must be of the same type: either both NH1
or both NH1-10GE. The NH server for a Workgroup system provides connection for
Fibre Channel. NH servers do not have media (iSCSI) ports.
A NH server on a Workgroup system is configured with roles of SNFS File System
Server, FTP Server, and NAS Server. On a redundant system these roles are identical
on both servers and provide redundancy as follows:
• SNFS File System Server — On a redundant system only one server is active at any
one time in this role, and the media file system provides redundancy. If a fault
occurs on the active server, one of the other servers automatically takes over as the
active media file system server.
• FTP server — On a redundant system both servers are active in this role
simultaneously. To provide FTP redundancy in the event of a server failure, your
facility’s FTP system must be able to access alternate FTP servers.
In the Workgroup system no K2 Media Servers take the role of iSCSI bridge or media
database server.
The RAID chassis has two controllers. Each controller in the RAID chassis has two
standard Fibre Channel ports plus four optional Fibre Channel expansion ports
installed. This provides six Fibre Channel ports on each controller and a total of
twelve Fibre Channel ports across both controllers. This allows the controllers to act
in a limited way as a Fibre Channel switch. On each controller one port is available to
connect a K2 Media Server and the remaining ports are available for client
connections. Each controller in the RAID chassis is also connected to the GigE
control network, which is required for SNMP (NetCentral) monitoring.
There must be one primary RAID chassis and may be up to six optional Expansion
chassis. Primary chassis and Expansion chassis contain twelve drives. All disks in
both primary and optional Expansion chassis are bound in sets of 6 as RAID 5.
The K2 configuration control point PC is connected to the GigE control network. The
K2 System Configuration application runs on this PC for configuring the SAN. FTP/
streaming traffic accesses the K2 Storage System via the FTP GigE port on K2 Media
Servers.