More capabilities and features for data center SSDs

on 08/08/2022, by Andy Patrizio, IDG NS (adapted by Jean Elyan), Infrastructure629 mots

Compared to consumer versions, SSDs for servers and storage arrays are always faster and denser with more features.

There’s never a dull moment in the enterprise SSD market. Samsung, Micron and Kioxia have delivered three products worth checking out.

A Computational Storage Drive (CSD) SSD from Samsung

The South Korean unveiled the second generation of its SmartSSD, an SSD equipped with an FPGA from Xilinx and some memory for computer processing. Computational storage involves processing data where it resides rather than moving it across the network. This concept is only possible with SSDs and not feasible with a mechanical hard drive. It was in 2020 that Samsung presented its SmartSSD. The first generation was equipped with a Xilinx Versal chip. This latest release features customer-developed software and intellectual property (IP), as well as built-in ARM cores. Samsung claims that compared to conventional data center SSDs, this SmartSSD reduces processing time for heavy database queries by more than 50%, power consumption by up to 70%, and CPU usage by up to 97%. %. For the moment, Samsung has not indicated when it intends to market its second generation SmartSSD.

A 232-layer NAND from Micron

Several vendors are looking to break through the 200-layer NAND barrier. And Micron is therefore the first to achieve this with its 232-layer NAND chips. 3D stacking looks like building a tower. Memory cells are stacked on top of each other in layers, with a path-through connection allowing information to flow between the layers. This technology ensures much faster communication between the cells than in the case of a 2D stack. To put it another way, it’s as if the Empire State Building had only one floor. In addition to the density gains, the 232-layer NAND offers an I/O speed of 2.4 GB/s, which is 50% faster than Micron’s current 176-layer product. In addition, its write bandwidth is 100% higher and its read bandwidth is up to 77% higher than the 176-layer chip allows. Finally, it is 28% smaller in size than Micron’s previous generation NAND chips. Read/write endurance has not been disclosed.

PCIe 5 SSDs from Kioxia

Based on a PCIe 5 bus, the CM7 enterprise-class SSD released by Kioxia (formerly Toshiba) is twice as fast as the previous CM6 SSD based on a slower PCIe 4 bus. The bandwidth of the PCIe 5 bus is 4 GB/s/lane, twice that of the PCIe 4 SSD. AMD’s future Genoa-era processor. The CM7 SSD is available in a 2.5-inch form factor, which is the standard for 2U storage arrays, and in an EDSFF E3.S form factor, sometimes called a ruler, because of their long, thin form that resembles a ruler. . The SSD is built on a BiCS gen 5 3D NAND in 112 TLC layers (3bits/cell), which seems a little less advanced than what Micron does. But the CM6 used 96-layer NAND flash. Kioxian’s CM7 PCIe 5 is available in capacities of 1.6 TB, 3.2 TB, 6.4 TB and 12.8 TB. The manufacturer also equipped the CM7 with advanced features for intensive use, for example double ports for high availability applications, power loss protection, support for CG-Opal SED compliant with FIPS-140-3 (US Government Approved Encryption) and PCIe Single root I standard architecture /O virtualization (SR-IOV).

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