EVS XT-3 User Manual

DNxHD
100
DNxHD 100
+XDCAM 50
DNxHD
145
DNxHD 145
+XDCAM 50
XDCAM 50
# Disks
#ext
array
# RAID
Units
spares 8 audios 8 audios 8 audios 8 audios 8 audios
84 4 14 0 407 375 297 279 751
88 4 14 4 407 375 297 279 751
4.4. Network Transfers
4.4.1. XNet Transfers
Rule
This section provides figures on transfer speeds for jobs processed by the XNet (or SDTI)
network.
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 SDTI network.
Calculation formula: Maximum SDTI bandwidth / actual block-based
bandwidth = real-time transfers
When A/V data is transferred through the XNet network, you should take into account the
maximum SDTI bandwidth of 110 MB/s for SDTI1.5Gbps, and 200 MB/s for
SDTI3Gbps.
Example
How many real time transfers can I do over an XNet network if I work with Apple ProRes
422 at 120Mbps in PAL?
Calculation: Maximum SDTI bandwidth / Actual Bandwidth = real time transfers
110MB/s / 16.6MB/s = 6.6 real time transfers for SDTI1.5Gbps
200 MB/s / 16.6 MB/s = 12.0 real time transfers for SDTI3Gbps
This is the maximum real-time transfers the network connection can support.
It is obviously also necessary that the XT3 where the material is stored has enough local
disk bandwidth to feed the network accesses, on top of its own local channels (see Max.
RT Channels).
32 4. Software Specifications
EVS Broadcast Equipment SA Issue 12.05.C- November 2014

EVS XT-3 Specifications

General

Brand	EVS
Model	XT-3
Category	Server
Language	English