Recently, Samsung announced the start of mass production of PM9A3 E1.S series of data center SSDs. This product uses the sixth generation (1xx layer) V-NAND, which complies with the Open Computing Project (OCP) NVMe Cloud SSD specification. PM9A3 series SSDs It also contains a 2.5-inch, M.2 form specification, and a maximum capacity of 7.68TB , which meets the strict requirements of data centers, enterprises and other workloads.
The demand for big data storage is increasing day by day. As of 2020, there are nearly 600 ultra-large data centers in the world. The high-performance PCIe 4.0 SSDs launched by Samsung, Intel, Kioxia, SK Hynix and other original manufacturers are all terabytes of capacity. Aiming at the storage needs of data centers with greater capacity. At the same time, the rapid development of 5G, AI and other technologies not only demand high storage capacity, but also diversify requirements for different application scenarios. For example, comprehensive advantages such as performance, power consumption, heat dissipation, and durability are driving data center storage. The plan has changed.
Innovating traditional data center storage: What are the characteristics of SSD under the EDSFF standard?
In the consumer market, SSD forms include 2.5-inch, BGA, M.2, AIC, mSATA, Half-Slim, mini-SATA, 1.8-inch micro-SATA, etc., among which mSATA, Half-Slim, mini-SATA SSD , 1.8-inch micro-SATA has basically been eliminated by the market. Strong1strong enterprise and data center SSDs have 2.5-inch U.2, M.2, and AIC designs. The EDSFF standard has attracted much attention in the past two years and is regarded as a new standard for data center and enterprise SSDs.
EDSFF is mainly divided into long and short specifications. It is an innovative new shape similar to the "long ruler". They are EDSFF 1U Long (E1.L) and EDSFF 1U Short (E1.S). Among them, E1.L specifications are divided into two thicknesses of 18mm and 9.5mm.It can provide larger storage capacity and provide key features such as heat dissipation efficiency, maintainability, scalability and performance.
E1.L shape
E1.S specification can accommodate a higher storage density compared to the M.2 specification, because it accommodates two rows of NAND Flash particles, which is shorter than the E1.L shape. As well as more efficient cooling optimized for 1U servers, it is also a storage solution designed for high-capacity ultra-large-scale servers.
E1.S appearance
In addition, in order to be compatible with traditional SSD sizes, the E3.S specification is also a new form of NVMe SSD standard for cloud services and enterprise data centers. It can be installed vertically in 2U servers or in 1U servers. Medium-level installation, with two thicknesses of 7.5mm and 16.8mm. The length of E3.S is 104.9mm, while the length of E3.L is longer, which is 142.2mm.
E3 form factor
EDSFF standard is optimized for the characteristics of NAND Flash, and the current SSD still has the traditional 2.5-inch and a very few 3.5-inch form, mainly because the mechanical hard disk HDD is still in terms of capacity Occupying a dominant position is also convenient for compatible terminal equipment. With the continuous development and evolution of the EDSFF standard, the ability to accommodate more storage capacity in 1U and 2U servers and provide more flexible and scalable storage solutions have become the development trend of data center SSDs.
's application in the server
Source: Network
Intel leads, Samsung, Kioxia, SK Hynix SSDs have laid out EDSFF standards
In 2019, Intel released the first version E1.L specification SSD--D5-P4326,Based on enterprise-level QLC NAND flash memory particles, the highest capacity is up to 30.72TB. Later, it also launched DC P4510 E1.L, P4511 E1.S and other series of SSD products. In 2020, Intel will use the latest 144-layer 3D NAND to launch the data center D5. -P5316 SSD, available in E1.L specification shape, the highest capacity also reached 30.72TB.
EDSFF standard server SSD
Source: China Flash Market organized by ChinaFlashMarket
In addition to Intel, Samsung’s latest mass-produced PM9A3 series E1.S SSD and the fifth-generation V-NAND-based PM983a M.2) Compared with M.2, the continuous write speed has been doubled to 3000MB/s, the random read speed of 750K IOPS is increased by 40%, and the random write speed of 160K IOPS is increased by 150%, and the performance has been significantly improved .
Western Digital also launched the enterprise-class SSD UltraStar DC SN640 in 2019, including 2.5-inch U.2, M.2 22110, and EDSFF E1.L in three different form factors.
In 2020, SK Hynix launched the enterprise-level SSD-PE8111 based on 128-layer 1Tb TLC 4D NAND. The SSD capacity based on the E1.L specification is up to 16TB and 32TB.
Kioxia is geared towards the XD6 series of SSDs in the data center field. It has been upgraded from the M.2 22110 and 2.5-inch/7mm U.2 form factor used in the previous generation XD5 to EDSFF E1.S (9.5mm, 15mm and 25mm) form specifications. It even developed a new SSD in E3.S form with a capacity of 3.84TB.
Source: Intel
Although the server market demand is cooling in the second half of 2020,However, after a period of inventory adjustment, the capital expenditure of cloud service providers is expected to return to the expansion cycle in 2021, and it is estimated that the capital expenditure of global data centers will increase by 10%. At the same time, Facebook in the United States, Amazon in India, Microsoft in Sweden, and ByteDance in Singapore all have data center construction plans. There are at least more than 100 data centers in different planning or construction stages around the world.
In the enterprise SSD market, Samsung and Intel account for more than 50% of the market share , SSDs based on the EDSFF specification can achieve PB of storage space in a 1U server and optimize overall performance. Therefore, Intel, Samsung, Kioxia, Western Digital, SK Hynix, etc. have deployed the data center market, and the EDSFF specification has naturally become the future development direction of data center SSDs.
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