Operation Security; Reliability; Hardware Reliability - Huawei U-SYS MRS6100 Technical Manual

Technical Manual
U-SYS MRS6100 Media Resource Server
system generates an alarm to prompt the operator to restore data as soon as
possible.

10.1.4 Operation Security

The MRS6100 ensures the system operation security through the following
measures:
It strictly restricts the access authority of operation and maintenance personnel.
The user name and password are required when one accesses the system, and
the system makes record of it every time. According to the requirements of
maintenance and operation personnel, the operation authority can be classified.
All important operations are recorded in the operation log, which facilitates the
location and tracing of the historical operation.
Prompt alarms are available against system abnormality due to error operations.
An excellent check function is available for configuration activities of an operator
and illegal configurations are refused.
The maintenance and operation system can protect user names and passwords.
If a user makes no operation for a specified period, the system automatically logs
off to prevent the access of unauthorized users.

10.2 Reliability

10.2.1 Hardware Reliability

The MRS6100 is structured in a distributed manner physically, and reliability
measures are taken to guarantee the reliability of the hardware system. For example,
the boards in use are designed in the active/standby mode, in the load-sharing mode
and with redundant configuration. Qualified electronic components are used in
MRS6100, and they are carefully selected and already pass the aging test.
I. Distributed processing
In MRS6100, the distributed processing is fulfilled by means of modularized functions.
The functions of the modules are relatively independent, and controlled by different
processors. The fault of one processor does not influence the normal running and
operation of the whole system.
II. Multi-processor redundant technique
The key components used in MRS6100 adopt the multi-processor redundant
technique. For example, the SMUI and MCCU boards adopt the active/standby
processor running mode. In the normal conditions, the active processor controls the
running of the modules; the standby processor keeps synchronized with the active
one in real time. Whenever the active processor becomes faulty, the standby one is
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Chapter 10 Reliability Design