Shulou(Shulou.com)05/31 Report--

In this issue, the editor will bring you about the future cloud storage solution based on MRAM and NVMe. The article is rich in content and analyzes and describes it from a professional point of view. I hope you can get something after reading this article.

At the 2019 Global Flash Summit, Everspin served as the global leader in MRAM memory chips to share solutions on how to use nonvolatile storage such as MRAM and NVMe SSD to build cloud storage in the future.

First of all, STT-MRAM has the following advantages as a medium for caching abnormal power-down data:

1. Non-volatile memory chips that are more powerful in data retention than traditional SRAM or DRAM

two。 The chip capacity is large, and the capacity of a single chip is as high as 1Gb.

3. Using DDR4 interface, the bandwidth can reach 2.7GB/s, with super performance.

4. Erase and write billions of times! Life cycle

5. Ultra-low latency

6. The data can be preserved for a long time: the data can be preserved for more than 10 years at 85 degrees Celsius.

7. Low data error rate

8. High reliability.

MRAM can be applied to the following scenarios of NVMe SSD, PCIe SSD, NVMe-oF, all-flash arrays:

NVMe SSD scene

MRAM caching for NVMe SSD, especially QLC, has the following advantages:

After the adoption of MRAM, the following image changes have taken place in the internal architecture of NVMe SSD, using MRAM as the data cache, while the FTL mapping table storage is still DRAM:

NVMe-oF scene

There are four major advantages of adopting NVMe-oF in the data center:

1. Achieve less than 1 microsecond data transmission, skip the kernel, skip host CPU and memory, can be P2P transmission

two。 Allocate CPU computing tasks to dedicated computing chips or memory controllers

3. Higher read and write bandwidth

4. The server can be simpler and more power-efficient. Instead of the expensive X86 CPU, you can use ARM CPU.

The following picture is the data stream of the traditional NVMe-oF, which needs to enter the NVMe SSD through the system memory and CPU, which will result in a long read and write delay.

If MRAM is used as the cache on the intelligent network card, the data is directly transmitted to NVMe SSD through P2P, and the system memory and CPU are skipped, which greatly shortens the read and write delay and greatly improves the performance.

MRAM is used in all-flash array

In the memory controller of the all-flash array, MRAM can be used as cache acceleration and improve product performance and reliability without the need for additional batteries or capacitors.

What will the future data center storage look like?

The future cloud storage hardware architecture based on NVMe SSD and NVMe-oF is shown in the following figure, in which MRAM can be used in Nic cache, NVDIMM, all-flash array acceleration and NVMe SSD.

Everspin is a professional leader in the design and manufacture of embedded MRAM and spin torque STT-MRAM. Its market and applications involve data persistence and integrity, and low latency and security are critical. More than 120 million MRAM and STT-RAM products are available in the data center, cloud storage, energy, industrial, automotive and transportation markets, laying a strong, fast-growing foundation for MRAM users. Everspin MRAM is resistant to high radiation, can operate at extreme temperatures, and is tamper-proof. This makes MRAM suitable for automotive, industrial, military and space applications. Everspin agent Yingshang Microelectronics provides comprehensive product solutions and technical support and guidance.

This is what the future cloud storage solution based on MRAM and NVMe shared by the editor is like. If you happen to have similar doubts, please refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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