vNAS

VNAS

vNAS is virtualized network-attached storage software that allows you to create a virtual SAN using the local storage in hypervisor hosts. It pools resources to create a shared storage platform accessible over a network.
virtualized networkattached-storage san shared-storage

vNAS: Virtualized Network-Attached Storage

Virtualized network-attached storage software, creating a virtual SAN using local storage in hypervisor hosts, pooled resources for shared storage over a network.

What is VNAS?

vNAS (virtual Network Attached Storage) is software that allows you to create a virtual SAN (Storage Area Network) using the local disks and flash storage in hypervisor hosts. It creates a shared storage platform that looks and acts like a physical SAN, providing features like thin provisioning, deduplication, compression, and more.

vNAS works by installing lightweight software on each hypervisor host. This software allows you to pool and aggregate local storage across hosts to create a virtual shared storage device. Blocks of data are distributed across multiple disks and servers, providing redundancy and resilience.

Key benefits of vNAS include:

  • Lower cost since you utilize existing commodity server storage
  • Scalability as you add hosts to the cluster
  • Data protection with replication, erasure coding, and snapshots
  • High performance by leveraging server-side flash storage
  • Thin provisioning to reduce wasted space
  • Data reduction with compression and deduplication

vNAS eliminates the need for a separate physical SAN, enabling software-defined, hyperconverged storage using existing hypervisor infrastructure. Leading vNAS solutions include VMware vSAN, Microsoft Storage Spaces Direct, Nutanix Acropolis, and various open source options.

VNAS Features

Features

  1. Creates a virtual SAN using local storage of hypervisor hosts
  2. Pools storage resources across hosts to create a shared storage platform
  3. Provides block-level storage accessible over IP network
  4. Supports iSCSI and NFS protocols
  5. Built-in deduplication and compression
  6. Thin provisioning support
  7. High availability with automated failover
  8. Centralized management console
  9. Integration with VMware vSphere and Microsoft Hyper-V
  10. Scalable and flexible architecture

Pricing

  • Free
  • Subscription-Based

Pros

Leverages existing storage for virtual SAN

Reduces need for dedicated SAN hardware

Simplified storage management

Improved scalability and flexibility

Cost savings compared to physical SAN

High performance for virtual workloads

Data reduction features like deduplication and compression

Supports mainstream hypervisor platforms

Cons

Performance limited by capacity of underlying local storage

May require storage capacity planning for growth

Limited physical SAN capabilities like multipathing

Does not support physical servers or non-virtualized workloads

Can have complex setup and configuration

Typically lacks support services of SAN vendor


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