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Functional scope, concepts and applications
2. Temporary operation (until online maintenance) of theCPUs of CoD-XSB
The failure of hardware resources can be compensated for in part by puting the CPUs of
XSB 01-1 into operation. The entire procedure is illustrated with the figure below:
Normal operation
4 CPUs, 10 GB
Failure, reboot,
autom. recovery
and DR-connect of
CoD-XSB (for CPUs)
Figure 111: Online maintenance: Temporary operation (until online maintenance) of the CPUs of CoD-XSB
Measures to be taken:
1. Performed by the service engineer or by the customer:
For the period until the next maintenance window XSB 01-1 is connected as CPU-XSB
(no-obp-sb, no-mem-sb, no-io-sb) using DR-connect.
In terms of the CPU the partition works at full capacity (100%) and with the remaining
8 GB of memory (6 GB of BS2000 main memory = 60%). One CPU remains unused
and can, if required, be connected as a CoD-CPU.
The subsequent measures are performed by the service engineer at a time selected by the
customer within a maintenance window:
2. XSB 00-1 can be disconnected from the partition using DR-disconnect, in which case the
partition operates with 4 CPUs (3 BS2000-CPUs = 75%) and 8 GB of memory (6 GB
of main memory = 60%). The previously unused second CPU of XSB 01-1 is automat-
ically put into operation.
With the remaining resources, in terms of its RPF performance the partition corre-
sponds to the SX150-10C model.
3. Remove the system board, repair or replace and install the system board.
4. Start up the two XSBs 00-0 und 00-1 with DR-connect.
5. Remove XSB 01-1 from the partition with DR-disconnect
This restores the initial status for this partition with 100% use of the CPUs and, in the ideal
case, of the memory.
300
Restricted
operation 1
4 CPUs, 6 GB
DR-disconnect
and removal of
defective SB
Dynamic Reconfiguration
Restricted
operation 2
3 CPUs, 6 GB
Installation of SB and
startup of XSBs and DR-
disconnect of CoD-XSB
Normal operation
4 CPUs, 10 GB
U41272-J-Z385-3-76
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