1.
What is HMB technology? What
is the impact on SSD?
HMB allows SSDs to improve their performance without a cache by leveraging the high-speed read and
write characteristics of memory
Home > Blog > What is HMB technology? What is the impact on SSD?
Leo Zhi
May 13, 2022
12:28 am
2. Table of Contents
HMB is known as Host Memory Buffer, or host memory buffer technology,
which allows SSDs to improve their performance without a cache by
leveraging the high‐speed read and write characteristics of memory,
ultimately achieving comparable performance to SSDs with their own
cache.
From NVMe 1.2, all can support HMB master memory buffering. When AN NVMe SSD that
supports the HMB function reads and writes data, the function is automatically enabled to
increase the speed. If SSD data security is compromised due to unstable system memory,
the HMB function is automatically disabled to ensure data security.
The PRINCIPLE of HMB technology is to set aside a cache area in host memory exclusively
for SSD use. This area occupies only a small part of the PC memory space (usually less than
128MB) but retains sufficient space to coordinate data exchange between the CPU and
hard disks. CPU and system performance is not affected.
However, HMB technology is suitable for the installation of newer platforms, because
although THE HMB function automatically enables speed up without additional
cumbersome operation process, it has strict requirements on the system side. Windows 10
1703 or 1709 is the minimum version of a computer system that supports HMB.
3. NVMe History & Roadmap
Currently, control chip manufacturers Marvell, SMI, and Phison have launched several chips
to support HMB technology, such as Marvell 88NV1160/88NV1120, SMI
SM2263XT/SM2258XT, and Phison PS5008-E8T. Toshiba’s latest DRAM-less designed
RC100 series SSDs utilize HMB technology to achieve random read speeds of up to 160K
IOPS and random write speeds of up to 120K IOPS. The new generation SM2263XT
designed by Huirong DRAM-less utilizes HMB technology to not only double the IOPS
performance but also to match the SM2263’s IOPS performance is comparable to that of
the SM2263, fully compensating for the IOPS performance disadvantage caused by SSDs
without DRAM cache chips.
4. It’s Leo Zhi. He was born on August 1987. Major in Electronic Engineering & Business English, He is
an Enthusiastic professional, a responsible person, and computer hardware & software literate.
Proficient in NAND flash products for more than 10 years, critical thinking skills, outstanding
leadership, excellent Teamwork, and interpersonal skills. Understanding customer technical queries
and issues, providing initial analysis and solutions. If you have any queries, Please feel free to let me
know, Thanks
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