Grass Valley K2 (Summit 3G) 10Gv2 Storage Area Network Installation v.8.1 - Manual (Page 56)

Redundant server heartbeat serial cable
Take care to use the proper serial cable to interconnect redundant K2 Media Servers that take the
role of file system/database servers. This cable supports the heartbeat mechanism whereby the
servers monitor each other’s health. It is a 9 pin serial cable, but it is not a standard RS-232 null
modem cable. The heartbeat cable is supplied with your system (Grass Valley part number
174-8137-00) and has a pin configuration as follows:
1 – 4
2 – 3
3 – 2
4 – 1&6
5 – 5
6 – 4
7 – 8
8 – 7
9 – No Connect
Cable NH10GE K2 Media Server
As directed by the system diagram for your K2 SAN, cable the NH10GE K2 Media Server or Servers
for your K2 SAN using the instructions in this section
K2-SVR-NH10GE online/production
These cabling instructions apply to the following:
• Dell R610 PowerEdge Server NH10GE on an online or production K2 SAN.
56 K2 SAN Installation and Service Manual 02 February 2012
Cabling K2 SAN devices