XenData Cloud File Gateway software creates a single massively scalable file system across two storage tiers: conventional disk and Microsoft Azure blob storage. The storage system allows existing file-based applications to use blob storage without the need for modification. The gateway can be installed on-premise or on an Azure virtual machine.

The gateway is optimized for video, image and other large files which makes it ideal for a wide range of applications including creative media, video surveillance, medical imaging and many scientific and engineering uses.

When the Cloud File Gateway is installed on premise, its tiering policies keep frequently accessed files on the local managed disk storage for best performance while minimizing cloud access costs and Internet bandwidth usage.

When installed on a virtual machine in the Azure Cloud, the Cloud File Gateway manages an Azure disk volume and one or more Azure blob storage accounts. You set policies to keep frequently accessed files on the managed disk storage for best performance and other files on cost-effective blob storage.

Whether the Cloud File Gateway software runs on a physical on-premise computer or an Azure VM, the file system is presented as a single logical drive letter which can be accessed as one or more Windows network shares as well as by applications running on the same VM or computer that runs the gateway.

Scalable to Petabytes

The content stored in blob storage is unlimited, easily scaling to multiple petabytes, and the data held on the managed disk can scale to 256 TB. A single gateway can store up to two billion files within the tiered file system.

Tailored Disk and Blob Storage Policies

The XenData tiering policies determine which files are written to the managed disk or blob storage or both. The user can set policy rules for various file types and folders. Timed disk retention rules may also be applied, determining how long files are held on disk after written or last read. Regardless of where a file is stored, it is always accessed from the same folder location in the file system.

Scheduling Optimizes Internet Bandwidth

Time windows are scheduled so applications can write to disk while postponing a copy being made to blob storage. This is particularly useful when the Cloud File Gateway is installed on-premise as it allows Internet bandwidth to be optimized when in high demand.

Partial File Restore (PFR) Support

Ideal for creative video applications, being able to restore only a portion of a large file held in blob storage allows creation of a video clip without the need to restore the entire file.

Standard File Sharing and Security

Files may be shared via SMB, NFS or FTP. Alternatively, they can be accessed by applications running on the same Windows computer or VM as the gateway. The tiered storage volume is fully compliant with the Microsoft security model based on Active Directory, allowing for easy introduction into an existing Windows domain or workgroup.

Gateway Running in the Cloud

Running Cloud File Gateway software on an Azure VM allows your file-based applications to run in the cloud. Please contact us, if you would like to discuss using the Cloud File Gateway in the Azure cloud together with your application.


Gateway Running On-Premise

The Cloud File Gateway software can be installed on a local Windows computer with a direct attached NTFS disk volume that becomes the on-premise storage. It manages a massively scalable file system that is tiered across the local disk and Azure blob storage.

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Hybrid Cloud Storage Servers/Appliances

The XenData Cloud File Gateway software provides the Azure archive for the following XenData solutions:


A hybrid cloud storage server that scales to 240 TB of local RAID plus unlimited capacity in Azure.

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A hybrid cloud appliance with 10 TB of local RAID plus unlimited capacity available in Azure.

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