Avaya 4524GT, Configuration Manual

Page: 23 / 362

Figure 3: CFG mirror images after removing unit 4
Removing a BU
When you remove a BU, the TEMP-BU assumes the role of the BU. Because all the CFG mirror
images of the NBUs reside in the removed BU, the TEMP-BU mirrors all the CFG images of
the NBUs in the stack.
After you remove the BU from the stack shown in Figure 2: CFG mirror images in the stack
after adding unit 4 on page 22, the TEMP-BU (unit 2) must mirror all the CFG images in the
stack (see Figure 4: CFG mirror images in the stack after removing the BU (unit 1) on
page 24). The feature also ensures that the stack always has two copies of an INACTIVE
CFG mirror image.
Auto Unit Replacement
Configuration — System April 2011 23