Dell PowerEdge R320 - Manual (Page 7)

Cluster Node A physical member of a resource cluster, such as a host in a server cluster or a SAN in a
storage cluster.
collection 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.
Compellent Host
Adapter (CHA) 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.
configuration The database that describes the entire contents and configuration of the Dell AIM
environment.
Conservation Mode 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.
Console 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.
control module 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.
control panel The part of the system that contains indicators and controls, such as the power button and
power indicator.
Control Port 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.
Controller (Dell AIM) 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.
Controller (Dell
Compellent) 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.
Controller Services 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.
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