Where does XtremIO keep metadata at all times on an active cluster?

XtremIO maintains metadata in memory at all times on an active cluster. This in-memory metadata architecture is a key feature of XtremIO that significantly boosts performance.While metadata is kept in memory for runtime operations, it is also journaled, protected, and hardened to SSD to tolerate any failure event in the array, ensuring data integrity and system resilience1.

References:

The blog post “XtremIO’s In-Memory Metadata Architecture – Fact and Fiction” on Dell’s official website provides a detailed explanation of how metadata is managed within the XtremIO system1.

The document “Introduction to XtremIO X2 Storage Array” further elaborates on the system architecture and the role of metadata in the operation of the storage array2.