Dell PowerEdge R730 Glossary - Page 7

Cluster Node collection Compellent Host Adapter (CHA) configuration Conservation Mode Console control module control panel Control Port Controller (Dell AIM) Controller (Dell Compellent) Controller Services A physical member of a resource cluster, such as a host in a server cluster or a SAN in a storage cluster. In ASM/ME, a collection is related groups of storage objects such as volumes, snapshots, or application components, and are represented by nodes in the ASM Console Tree under the Collections master node. In Dell EqualLogic Group Manager, volume and replica collections and custom snapshot collections appear in the hierarchy under the Volumes view. Internal cache card/battery seated in each Dell Compellent Storage Center controller. Write cache memory is mirrored to the cache card. On a dual-controller Dell Compellent Storage Center, the controller 1 cache card holds the mirror for controller 2, and the controller 2 cache card holds the mirror for controller 1. On a single-controller Dell Compellent Storage Center, the cache card holds the mirror for the single controller. The database that describes the entire contents and configuration of the Dell AIM environment. In Dell Compellent Storage Center, a data preservation mode that is reached when remaining free space drops to a critical threshold (typically 10%, up to 32 GB). In conservation mode, the Dell Compellent Storage Center generates an alert, prevents new volumes from being created, and starts expiring replays at a faster rate to free up space. See Emergency Mode. The web-based user interface that you use to monitor and work with the elements in the Dell AIM environment. The Dell AIM Console is hosted by the Dell AIM Controller. In Dell EqualLogic PS Series arrays, the physical processor and interface component. A control module contains the Dell EqualLogic PS Series firmware in flash memory and provides temporary power continuity for data sorted in cache memory. It has multiple network interfaces and an optional serial port. An array can contain two hot-swappable, dual redundant controllers. The active control module serves I/O, while the secondary control module mirrors data in its cache. The part of the system that contains indicators and controls, such as the power button and power indicator. The destination iSCSI port to which iSCSI initiators (servers) connect in order to make storage requests. In a Dell Compellent Storage Center configured for virtual port mode, a control port is created for each iSCSI fault domain, to redirect iSCSI traffic to the appropriate virtual port. Software that manages the physical and virtual hardware, software, and network configurations and hosts the Dell AIM Console. In the context of a pair of resilient Controllers, each Controller runs on a dedicated server but shares a configuration database and other key files on a shared file system. Provides disk aggregation (RAID), I/O routing, error detection, and data recovery. Provides the intelligence for the entire Dell Compellent Storage Center subsystem. Every Storage Center system contains at least one. Storage Center and recommend corrective actions to improve performance and availability of the system. In the context of Dell AIM, the virtual IP address or addresses the Controller users for communications with the System Control Network (SCN), managed switches, the Console and CLI, and so on. By default, this is a single virtual IP address on the active Controller, but you can specify unique addresses for the services SCN Services and SNMP Trap Collector. 5