EVS XT4K - Gigabit Ethernet Transfers

4.4.2. Gigabit Ethernet Transfers
General Description
This section provides empirical figures on real-time transfers for backup and restore jobs
processed by the GbE network. The GbE bandwidth however relies on the customer
network behavior, which depends on external conditions, and partly on the EVS servers.
WARNING
The observations and data focus on steady rates: the transfer performances
with small clips will be lower as they generate a lot of starts and ends of
sessions.
The section presents data in tables including the following parameters:
1. Field Rate: field frequency used, or number of video fields transferred per second.
2. Video Bitrate: codec bitrate set by the user in the Codec section of the Server tab in
the Multicam Configuration window.
3. RT Transfers: maximum number of simultaneous transfers of A/V data that can be
processed for the given frame rate and video bitrate through the GbE network.
Calculation formula: Maximum GbE bandwidth / actual block-based
bandwidth = real-time transfers
4. Transfer Speed: transfer speed for a single transfer expressed in faster than-real time
speed. The calculation formula is the same with a reference GbE bandwidth that is
slightly smaller.
Reference Bandwidth
The table below specifies the reference GbE bandwidth used for calculations in this
section. However, the effective bandwidth depends on network behavior, which only
partly relies on the EVS server.
Gigabit Connection Type
Real-Time Transfers Single Transfer Speed
Backup Restore Backup Restore
1GbE (GbE board) 90 MB/s 70 MB/s 80 MB/s 70 MB/s
2GbE (LACP teaming) 180 MB/s 140 MB/s 80 MB/s 70 MB/s
10GbE (GbE board) 220 MB/s 140 MB/s 150 MB/s 80 MB/s
Backup Transfers
The maximum transfer speed through one port the GbE board on an XT4K server in 1080i
and UHD-4K, without SLSM REC, are summarized in the following tables.
TECHNICAL REFERENCE MANUAL XT4K Server 15.2
4. Software Specifications 25