3 minute readNVM Express to the Rescue
What is NVMe?
NVMe (Non-Volatile Memory Express) is a communications interface and driver that defines a command set and feature set for PCIe-based SSDs. Its intention is to increase the performance of a client’s computer storage system, all with low latency. It accomplishes this by supporting 64K of parallel command queues at a much faster speed than hard disk and traditional flash means, which are limited to single command queues.
How Does NVMe Work?
First, NVMe is both an SSD (Solid State Drive) technology and drive interface. This means it is both software as well as hardware. The difference is that while SSDs typically use integrated circuits, NVMe is an interface used to store data at high speed. This connection provides for low latency and high throughput. SSD alone has a 600MB per second read-write speed, while NVMe has an r/w speed of 2000MB. As for performance, the NVMe transfer data rate vs. SSD is twenty-five times faster. It transfers information using PCIe (peripheral component interconnect express) sockets that are independent of the storage form factor. These tasks begin more quickly, transfer more data, and complete tasks faster vs. SATA SSD features like the older AHCI (Advance Host Controller Interface) drivers.
The NVMe protocol offers higher performance and lower latencies due to its architecture. It can achieve high performance and low latency by supporting 64K I/O queues, versus hard drives that only offer a single queue with 32 and 254 entries, respectively. The NVMe host can create queues based on what it needs for system configuration and system workload; it can even change priority as the need presents itself.
NVM Express Protects Your Information
NVMe begins with making your job simpler. In many ways, NVMe helps you work smarter, like with RAID (Redundant Array of Independent Disks). This method of data storage protects against system failure and data loss by achieving data redundancy.
NVMe-management interface was introduced in 2019. The protocol supported the architecture and command sets to discover, configure, and update NVMe operating environments. This provided an industry standard for the management of both in band and out of band memory. This permits the system to continue to function 24/7, allowing access to critical systems like switches, servers, and firewalls if the system is off or has failed due to an outage or crash.
NVM Express is Efficient
NVMe was designed for flash memory to be the means of storage. It was developed far more efficiently when compared vs. SAS. It can only, however, be used within the server to which it is attached. This is where NVMe over Fabrics comes into play. Through NVMe-oF, networks can now be connected through either a fiber connection or traditional ethernet IP switches.
NVMe is a scalable host controller, much more than legacy interfaces. With its NVMe spec being designed from the ground up, the architecture is used to create the environment best suited for the high performance the protocol demands. It is intended to be used over the PCIe interface, even in multi-core environments. With each core being able to communicate with the storage system, NVMe can work more efficiently for the user.
Reliant Technology for Memory Storage
Reliant Technology provides the support you require when searching for the non-volatile memory solution that will best fit your organization. We understand that you want your information to be protected and accessible when you need it.
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Reid is the founder and CEO of Reliant Technology and for 14 years has pursued his mission to remove the pain associated with maintaining IT infrastructure. Reid writes on common challenges related to maintaining, servicing, tracking, budgeting, and upgrading technology.
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As Data Center and storage experts, Reliant Technology is available to provide consultations and solutions to your server backup needs. Our experienced engineers and IT specialists are ready to help you determine the best option for your Data Center. If you have a topic you would like to see discussed, or if you would like to submit an article for possible publication, please, get in touch with us.