Multiserver Processor Node; Figure 1-2 Msp Pair - Northern Telecom DMS-100 Series Manual

1-2 System redundancy

Multiserver processor node

DMS VoiceMail uses a pair of multiserver processors (MSPs) to provide
system redundancy. The primary MSP has the active bus controller.
Multiserver programs are distributed to both MSPs. When the active MSP
fails, bus control passes to the second MSP and the appropriate multiserver
programs are restarted.
Figure 1-2 illustrates a pair of MSPs.
Figure 1-2
MSP pair
MSP 1 MSP 2
Disk Disk
drive drive
297-7001-503 Standard 02.02 March 1994