360 Systems MAXX2400HD - Manual (Page 76)

MAXX-2400HD Owner’s Manual Page 75
When the FTP client is connected, it will display the Clips in the main directory and all of the
sub-folders. Clips can be uploaded, downloaded, deleted and renamed using standard FTP
client commands. Clips in the subfolders can be displayed by entering those folders. Consult
the documentation for your FTP client for information on changing folders.
FTP Transfer Rates
Transfer rate (transfer time relative to clip length) depends greatly on the current operational
demands on the server. This includes the number of channels that are being used, whether
there is recording taking place, the bitrate of the video, and the number of VANC data lines in
use.
Secondarily, the network itself and the source of FTP data can be limiting factors in some cases.
The following rates assume a dedicated network with limited additional traffic, a high
bandwidth FTP source, and a video bit rate of 75 Mb/s with 1 VANC line.
Workload Transfer Time for 1 minute of video
Upload to MAXX
Download from MAXX
(or MAXX-to-MAXX FXP transfer)
IDLE 14 seconds (45.0 MB/s or 360 Mb/s) 28 seconds (22.5 MB/s or 180 Mb/s)
1 Channel Playing 14 seconds (45.0 MB/s or 360 Mb/s) 28 seconds (22.5 MB/s or 180 Mb/s)
3 Channels
Playing
15 seconds (39.4 MB/s or 315.2 Mb/s) 45 seconds (14.0 MB/s or 112 Mb/s)
1 Record, 2 Play 17 seconds (37.0 MB/s or 296 Mb/s) 44 seconds (14.3 MB/s or 114.4 Mb/s)
Multiple Simultaneous FTP Operations
FTP client programs that allow multiple simultaneous data transfers should be set to allow only
one data connection at a time.
While it is possible to log in from multiple clients, it is only acceptable to perform multiple file
transfers when the system is idle or playing or recording on a single channel.
File Sizes Reported in FTP Listing
The size of a clip reported in the file listing depends on the file type you are going to download
from the server. In any case it is a close approximation of the amount of data that will be
required to store the downloaded file. See the discussion of the .mxf and .vfc file types.
Overwriting Files
It is the responsibility of the client application (Windows Explorer, FlashFXP, etc) to ask the
user if they want to overwrite a file.
Note that some types of files such as Targa change file extensions when they have been
transferred into the server. In these cases, the FTP client cannot warn of a file overwrite. It is
important to take extra care when using these types of files not to overwrite necessary files.
Interrupted and Resumed Transfers
If a transfer is interrupted (for example, by a dropped connection) the transfer must be restarted.
Resumption of a partial transfer is not possible.