About Distributed File Storage
High-performance distributed file storage with snapshot and efficient deletion features for CKS workloads
Distributed File Storage delivers high write speeds, high IOPS for datapath-related operations, as well as higher read speeds in cases where block size and queue depth are low. Distributed File Storage is ideal for operations that require a lot of synchronization between Pods, and performance bottlenecks caused by contention are minimized.
Storage access across Regions or Availability Zones is not supported. A Distributed File Storage volume can only be accessed from within the cluster where it is deployed.
Features
Encryption
All data stored in Distributed File Storage volumes is automatically encrypted at rest using AES-XTS 256-bit encryption with FIPS 140-3 validated encryption keys. Encryption is enabled by default with no configuration required.
Encryption keys are automatically generated and managed by VAST and are applied at the cluster level. Keys are not accessible to users or operators.
Distributed File Storage does not currently support encryption for data in transit between pods and the storage backend.
.snapshot folder
Every Distributed File Storage volume features a folder called .snapshot, which contains a snapshot in time of the volume. This folder is accessible in any directory on the volume.
Snapshots of Distributed File Storage volumes are taken every 6 hours, and persist for 72 hours.
Trash directory
The trash directory allows asynchronous deletion of files and folders in bulk. Serial rm -rf on large directories is a slow and possibly blocking operation; moving files marked for removal to the trash folder (.vast_trash) is much faster. For more information, see Delete Files with VAST trash.