Since last year, manufacturers of solid-state drives have begun to release SSD with a dual-port interface NVMe. It is expected that drives with the appropriate ports and support for the same protocol in the future will replace the two-port SAS interfaces. In 2016, according to individual analysts, among all corporate SSDs, NVMe-enabled drives held a 16% share. It is predicted that by 2020, those will capture at least 60% of the server-based SSD market.
Two-port SSD NVMe allows you to organize high-speed local and network storage arrays. Each of the two NVMe ports on each drive can be connected to two different controllers, providing minimum latency and maximum data transfer speed. With local access to arrays, everything is simpler, but when working with networked flash arrays, there is a possibility that the bandwidth of the channels will be missed.
The issue of eliminating the bottleneck in case of network connection of SSD-arrays is occupied by the young Israeli company E8 Storage. According to the developer, the company has developed a flexibly scalable architecture based on two-port NVMe interfaces with access to Ethernet network ports from 40GE to 100GE. It is claimed that the E8 Storage storage network stores provide SAN arrays with similar latencies and speeds, as well as in the case of direct SSD connection to computer systems. This
is guaranteed to raise interest in SSD-drives and will make the penetration of NVMe interfaces deeper and wider.
The serial production of E8 Storage includes HGST Ultrastar SN200 PCIe. It is interesting that the company confirmed the work on creating a shelf system with Intel drives on 3D XPoint memory, but details refused to be announced.
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