EVS XT nano User Manual

4.4. 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.
Note
The transfer speed in real-time for a single A/V stream is 10% lower compared
to the number of real-time transfers.
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 internal 70 MB/s 65 MB/s 65 MB/s 40 MB/s
HARDWARE TECHNICAL REFERENCE MANUAL XTnano Server 12.02
4. Software Specifications 19

EVS XT nano Specifications

General

Brand	EVS
Model	XT nano
Category	Server
Language	English