Dell EqualLogic PS6210XS EqualLogic Group Manager Administrator s Guide PS Ser - Page 42

Figure 8. NAS Reserve Table 10. NAS Reserve Callout 1 Description NAS storage space Space allocated for storing user data as needed through various structures (volumes, snapshots, thin provisioning, replicas, containers, SMB/NFS, quotas, and local users and groups) 2 NAS reserve Amount of available storage space allocated to the NAS cluster for storing internal data and user data. This data includes: • SMB/NFS protocols - SMB shares provide users a way to share files and data across a Windows network, while NFS exports provide users a way of sharing files and data across UNIX networks. NFS clients can only mount exported directories. • Local users and groups - Individual accounts from which users can access SMB/NFS shares. These accounts can be grouped so that they share the same access permissions. • Quotas - Define how storage space on a NAS container is allocated among users and groups of users. • Security - Volume-level and group-level access controls for NAS containers. You can specify the total size of the NAS reserve and NAS container space, and the system will automatically add the required internal capacity. The system deducts a certain amount of the NAS reserve for internal use. The exact amount of internal space varies by configuration (see Table 11. Minimum and Maximum NAS Reserve Capacities), but it is roughly calculated as a fixed amount of space for each controller pair, plus approximately 0.5 percent of the total NAS reserve. The minimum and maximum capacities for the NAS reserve vary based on the cluster's configuration. You can increase the size of the NAS reserve as your NAS storage space requirements increase. However, you cannot decrease the size of the NAS reserve. Table 11. Minimum and Maximum NAS Reserve Capacities Cluster Configuration Minimum NAS Reserve 2 controllers 512GB 4 controllers 1024GB Maximum NAS Reserve 510TB 510TB 42 Architecture Fundamentals