Configure the Unity and SC block storage arrays with multiple paths to recorders using Microsoft MPIO. For redundancy, configure multiple NICs with the recorders and controllers. Recorders that are configured with multipathing reconnect to the volume across another available path after a NIC failure.
The TCP Max transmissions value determines how many times the Transmission Control Protocol (TCP) retransmits an unacknowledged data segment on an existing connection. The TCP retransmits data segments until they are acknowledged or until this value expires.
TCP/IP adjusts the frequency of retransmissions over time. The TCP establishes an initial retransmission interval by measuring the round trip time on the connection. This interval doubles with each successive retransmission on a connection, and it is reset to the initial value when responses resume.
To reduce the reconnection time and eliminate video loss, adjust the following TCP retransmission timers:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
Value Name: TcpMaxDataRetransmissions
Data Type: REG_DWORD - Number
Valid Range: 0 - 0xFFFFFFFF
Value: 3
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
Value Name: TCPInitialRtt
Data Type: REG_DWORD - Number
Valid Range: 0 - 0xFFFFFFFF
Value: 2