The VAST Data Universal Storage system is a highly scalable, high performance NAS and object storage solution. VAST positions itself as “Universal Storage” meaning it can be used as a singular solution for a variety of needs within a single tier.
The VAST Data solution features a unique architecture that utilizes the latest storage technologies. Storage enclosures consist of a large 3D Xpoint (Intel Optane) write buffer and QLC (Quad Level Cell) NVMe flash devices. Storage services are run in containers on disaggregated compute nodes and the system is connected using NVMeoF networks to provide low latency.
The VAST Data storage system utilizes a disaggregated shared everything scale out architecture, called DASE. This architecture separates the compute and storage allowing each to scale individually as needed up to Exabyte scale. VAST claims scalability of up to 1,000 storage enclosures and 10,000 servers.
The use of QLC flash requires a fundamentally different approach to storage compared to more typical all flash or hybrid SSD and HDD systems. QLC flash provides high density storage, but lower endurance. The VAST system overcomes this issue by using 3D XPoint as a large persistent buffer before writing to QLC in large blocks. VAST also uses predictive analytics to group data by predicted life expectancy. This approach allows the system to benefit from QLC’s dense storage, without suffering from the reduced endurance.
The systems use of 3D XPoint is also a key differentiator for the product. 3D XPoint technology provides near-DRAM performance, while maintaining persistence. VAST leverages this technology to create a large write buffer to optimize write latency, before writing data to QLC devices. The 3D XPoint is also used as a metadata store.
VAST Data Universal Storage Product Brief Includes:
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