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NexLog Recorder User Manual v2.2.0
Appendix A: Recorder Software Installation and
Upgrade
Just as with any computer, NexLog Recorders require a software operating
system and a number of application programs to be functional and to perform
useful work. The operating system in this case is Linux, and the application
programs are a combination of standard programs and programs written and
maintained by Eventide to work with its custom hardware environment.
As part of the manufacturing process, Eventide installs the recorder software.
Because the recorder software development is an on-going process, Eventide
occasionally creates software upgrades to bring older recorders up to the current
software version. It is sometimes desirable or even necessary to apply these
upgrades to recorders at the customer site, and the purpose of this section is to
explain the process so that customers can confidently perform upgrades (and
even installations) without factory intervention.
Why Re-installation May Be Necessary
The recorders use redundant disks, so a single drive failure should not cause
loss of data or software. However, if multiple disks in an array fail due to a
common cause (e.g., lightning or other power surge), you will have to re-install
the software when they are replaced.
Why Upgrades May Be Necessary or Desirable
There are several reasons why you may need to do an upgrade:
Problems (bugs) are found in the version currently running;
Hardware upgrades or changes require new software;
Valuable features are available in the new release;
Factory support requires a more recent software version