EVS XT2 Version 11.02 - July 2013 Configuration Manual - Manual (Page 48)

Rebuild Process
Introduction
The XT2 server is capable of performing a rebuild process of the RAID. This process can
happen either while the Multicam application is not running (offline process – rebuild is
faster) or while the Multicam application is running (online process – rebuild is slower).
Disconnection Process
As explained in the section "Disk Errors and Disconnection" on page 38, the software will
disconnect a disk that does not behave as expected.
Two options are available for the operator:
• Replace the disconnected disk and restart the server
◦ Start the Multicam application. The rebuild process will start automatically.
◦ Start a hardware check from the EVS menu and launch the rebuild. The process
starts offline. The operator can wait for the rebuild to be completed or cancel it
(that is to say postpone it) and start the Multicam application, in which case the
rebuild carries on in online mode.
• The operator can also force the disk to be reconnected by starting the rebuild process
in the hardware check. The process starts offline. The operator can wait for the rebuild
to be completed or cancel it and start the Multicam application, in which case the
rebuild carries on in online mode.
Note
If errors are detected during the rebuild process, a message appears after the
rebuild is complete to warn the operator, and the raid is not considered as
properly rebuilt. In this state, the system will keep working on 4 disks (4+1
configuration) or on 5 disks (5+1 configuration). If you want to run on 5, or 6,
disks again, you can try replacing the disk again and perform another rebuild, or
clear all clips.
If you don’t need to retrieve the clips or the record trains, you don’t need to rebuild the
RAID. In this case, select the 'Clear All Clips' answer when the message with this option
appears in the hardware check.
If you don’t rebuild the RAID array or if you don’t clear clips, the EVS server will keep
running on 4, or 5, disks only, and you will see a warning message appearing every time
you start or close the Multicam application. Normal operation can be achieved on 4, or 5,
disks, but then, if another disk fails, the system will hang and all video and audio data will
be definitively lost.
Warning
By default, the online rebuild process takes up 10% of the disk bandwidth. If you
want to change this, contact EVS support.
40 2. Multicam Setup
EVS Broadcast Equipment S.A. Issue 11.02.A July 2013