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.
Initially, VAST Data sold Universal Storage as a hardware solution with software in a perpetual license. In early 2021, VAST pivoted their model to be a software only solution sold as a subscription called Gemini, with certified hardware provided by Avnet. While VAST is no longer directly selling integrated appliances, the Gemini subscription model allows customers to purchase software licenses from VAST, and hardware which is integrated by the manufacturer and delivered to the customer as an appliance.
While the VAST Data solution is software based, it leverages a unique hardware 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.
VAST Data Universal Storage Product Brief Includes:
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