Non Volatile Random Access Memory (NVRAM)

NVRAM stands for Non Volatile Random Access Memory. It is a type of random access memory which does not lose its information when power is switched off. Now a days most commonly form of random memory access used SRAM or DRAM both require continual power in order to maintain their data. The NVRAM is a small 24 pin DIP (Dual Inline Package) integrated circuit chip and is thus able to obtain the power needed to keep it running from the CMOS battery installed in your motherboard. NVRAM is therefore a type of non-volatile memory that offers random access. There are two types of NVRAM.

One type of NVRAM is EEPROM that is Electrically Erasable Programmable Read-Only Memory circuit chips which maintain its information when power is switched off. In this case, NVRAM is composed of a combination of SRAM and EEPROM chips incorporated into a single semi-conductor die.

Another type of NVRAM is SRAM that is made non-volatile by connecting it to a constant power source such as a battery. Since SRAM requires continual power supply in order to save its contents, an NVRAM that is made from an SRAM will need to use an available power supply to make sure it continues working.

Advantages of NVRAM :-

1.NVRAM's serve applications that require high-speed write/read operations with non-volatile memories such as parallel processing controllers for antilock braking systems and LANs..
2.NVRAM chips work as SRAM.
3.NVRAM chips does not require much power and backup can be guaranteed for up to ten years.
4.The performance of NVRAMs is superior in comparison to other NVM products

Disadvantages of NVRAM :-

1.If the CMOS chip is not making proper contact with the motherboard's contacts. At this situation NVRAM would not be successful.
2.If the battery embedded in the NVRAM chip fails, then this means that your system clock will stop running and important system configuration information may not be maintained.

Read more:

NAS Knowledge Base