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Coho Data QoS lets multi-tenant storage neighbors peacefully coexist

Coho Data's new version of its DataStream multi-tenant storage nodes natively integrate Hadoop Distributed File System to existing block, container and file storage.

Coho Data Inc. has injected storage quality of service (QoS) into its DataStream software-defined storage nodes, allowing customers to dynamically allocate resources as service levels evolve.

DataStream 2.8, available Tuesday, builds on the vendor's previous integration of software-defined networking and support for Docker container storage. The upgrade adds Hadoop Distributed File System support for big data analytics to existing support of scale-out file and iSCSI block multi-tenant storage.

Prior to the addition of QoS, DataStream relied on the native logic of software-defined network switches to arbitrate any resource contention.

DataStream software matures

Version 2.8 provides a single cluster-wide namespace per tenant. CPU, network and storage can be isolated and set aside for different use cases. DataStream presents compute, network and storage as a disaggregated resource pool. That allows capacity and performance to be scaled higher or lower independently.

"Our story revolves around scale-out (capabilities) at the rack level. We give you the ability to run multi-tenant storage that scales at a granular level, as dictated by your workloads," said Sanjay Jagad, Coho Data senior manager of product marketing.

Coho Data launched in 2011, providing scale-out NAS for VMware environments. Block storage, OpenStack Cinder and Docker container support were incorporated in DataStream 2.7 in 2015.

Coho Data hybrid and all-flash nodes package DataStream software on white box Supermicro servers. Coho refers to DataStream as rack-converged data center infrastructure.

Scalable multi-tenant storage for Docker, Hadoop cluster consolidation

DataStream 2.8 expands support for Google Kubernetes-orchestrated Docker containers that run directly on Coho Data storage. For persistence, DataStream arrays mount a subset of the storage system namespace to keep data intact as a container migrates between nodes.

One thing Coho Data is missing is predictive analytics for storage consumption with containers. Coho Data said it may be added to the roadmap. For now, Coho Data profiles workloads (including containers) over time and places performance-intensive applications in DataStream's NVMe flash tier.

We provide the capability to isolate resources and guarantee service at both the container and virtual machine level, not through a hypervisor.
Jim Ensellchief marketing officer, Coho Data

Jim Ensell, Coho Data chief marketing officer, said quality of service (QoS) gives enterprises the flexibility to consume multi-tenant storage as a managed service for containers and Hadoop analytics.

 "We provide the capability to isolate resources and guarantee service at both the container and virtual machine level, not through a hypervisor," Ensell said.

"You don't need a dedicated Hadoop cluster anymore. You can now run Hadoop closer to where the data resides and access it through HDFS."

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