IBM 900 - Page 280

Each bank represents one image of the operational code. The images stored in
BANK A and BANK B are stored on the hard drive. The Configs represent the
configuration files that are stored with each bank. IMAGE refers to the status of the
operational software and CONFIG refers to the status of the configuration files.
The possible IMAGE and CONFIG status:
ACTIVE This file is currently loaded in active memory and is running on
the multiaccess enclosure.
Note: The status of this file can be changed only by resetting
the multiaccess enclosure. If a config or an image is active, it
is locked and cannot be overwritten or erased.
AVAIL This is a good file that can be made active.
CORRUPT This file was damaged or was not loaded into the multiaccess
enclosure completely.
PENDING This file will be loaded and become active the next time the
multiaccess enclosure is reset.
LOCAL This file will become active at the next reset. This reset will
cause the currently ACTIVE file to become PENDING. LOCAL
is a status that makes a file ACTIVE only for one reset of the
multiaccess enclosure.
Only one bank at a time contains an ACTIVE image. Only one configuration file is
ACTIVE and it must be within the ACTIVE bank.
How to Reset the Multiaccess Enclosure
Attention: A reset interrupts the function of the multiaccess enclosure for several
mintes. Be sure that the network is prepared for the interruption.
As previously stated, PENDING and LOCAL files are not loaded into active memory
until you reset the multiaccess enclosure.
You can reset the multiaccess enclosure using any one of these methods:
 Press the hardware reset button.
 Start a Selective IML from the service processor console.
Note: A general IML on 3746-9x0 will also reset the MAE.
Migrating to a New Code level
To upgrade from any earlier release of operational code to a later level refer to the
installation instructions shipped with the LIC.
A copy of the installation instructions can be obtained from the web site:
http://infodev1.lagaude.ibm.com
E-2 3746-9X0: MAE Installation and Maintenance