Storage and performance requirements

You must ensure that each Storage Node hosted by a virtual machine has enough space to support the initial configuration and future storage expansion.

Note: You cannot change the size of the storage volumes used by StorageGRID Webscale appliances.
When assigning space to virtual machine Storage Nodes, keep in mind that StorageGRID Webscale reserves 2 TB of space on each Storage Node for the Cassandra database. This database stores all object metadata as well as certain configuration data. Cassandra data is stored on the first storage volume (also known as RangeDB 0 or object store 0) of each Storage Node. Any additional capacity in this volume is used for object storage.

The performance of the OS volume and of the first storage volume significantly impacts the overall performance of the system. Ensure that these provide adequate disk performance in terms of latency, input/output operations per second (IOPS), and throughput. Refer to documentation related to performance sizing.

All StorageGRID Webscale nodes require that the OS drive and all storage volumes have write-back caching enabled. The cache must be on a protected or persistent media.