Huawei NetEngine40E Hardware Description page 767

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HUAWEI NetEngine40E Universal ServiceRouter

Hardware Description

Issue 01 (2012-09-30)

Nonvolatile Random Access Memory. The data in NVRAM cannot be

lost when the system is Down.

Random Access Memory is a memory that can be lost easily, and read

and rewritten by the micro processor.

Read Only Memory is a memory that cannot be lost easily, and can

only be read, but not written by the micro processor.

Static Random Access Memory is a type of random access memory. Its

contents can be saved only if the SRAM is provided with the

uninterrupted power supply. Unlike the DRAM, the SRAM does not

need to be refreshed repeatedly.

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