A PCA DSR deployed without a mate must host all of the
SBR Server Groups that are planned for deployment across the mated pair when
the mate is added. This action requires planning ahead for the eventual mate.
Note:
SBR Server Groups with only one server represent a
single point of failure for a portion of the SBR database.
A PCA DSR site could be configured as follows for
eventually adding a mate:
- Site A has two SOAM Server Groups configured: the red
one on the top left for use by Site A and the blue one on the top right for use
by Site B.
- The Site A SOAM Server Group is set up with two
Servers in Active/Standby configuration.
- The Site B SOAM Server Group is set up with one
Server configured as Preferred Spare. Because there are no other Servers in
this Server Group, the Server will become active.
- Site A has four SBR(B) Server Groups configured: the
two red ones on the left for use by Site A and the two blue ones on the right
for use by Site B.
- The Site A SBR(B) Server Groups are set up with two
Servers in Active/Standby configuration. These Server Groups have the Site A
SOAM Server Group as parent.
- The Site B SBR(B) Server Groups are set up with one
Server configured as Preferred Spare. These Server Groups have the Site B SOAM
Server Group as parent. Because there are no other Servers in these Server
Groups, the single Server will become active.
- Site A has eight SBR(S) Server Groups configured: the
four red ones on the left for use by Site A and the four blue ones on the right
for use by Site B.
- The Site A SBR(S) Server Groups are set up with two
servers in Active/Standby configuration. These Server Groups have the Site A
SOAM Server Group as parent.
- The Site B SBR(S) Server Groups are set up with one
Server configured as Preferred Spare. These Server Groups have the Site B SOAM
Server Group as parent. Because there are no other Servers in these Server
Groups, the single Server will become active.
