Physical partition (active)
BB#0
Hot
XBBOX
Hot
BB#1
Hot
Physical partition (active)
BB#3
Hot
BB#4
Hot
Physical partition (active)
BB#2
Hot
Physical partition (active)
BB#5
Hot
Physical partition (active)
BB#0
Hot
XBBOX
Hot
BB#1
Hot
Physical partition (active)
BB#3
Hot
BB#4
Hot
Physical partition (active)
BB#2
Hot
Physical partition (active)
BB#5
Hot
Figure4-1 Active/hot maintenance (for SPARC M10-4S maintenance)
Figure4-2 Active/hot maintenance (for crossbar box maintenance)
■Active/cold maintenance
Maintenance work is performed while the physical partition to which the
maintenance-targetFRU belongs remains turned on but the input power to the
chassisin which the target FRU is mounted is off (power cord is disconnected). It
isnecess ary to use dynamic reconfiguration (DR) to disconnect a chassis requiring
maintenance from the physical partition. For a single-chassis configuration, since
thech assis cannot be disconnected with DR, active/cold maintenance cannot be
performed.
Chapter4 Preparingfor Maintenance 45