Dell PowerEdge T420 - Manual (Page 17)

SMTP See Simple Mail Transfer Protocol.
snapshot A point-in-time copy (PITC) of a volume. See Replay.
snapshot collection A set of snapshots resulting from a snapshot operation on a volume collection. See volume
collection.
SNMP See Simple Network Management Protocol.
SNMP Trap Collector In the context of Dell AIM, the Controller Services virtual IP address that managed switches
and other devices use to send SNMP traps to the active Controller.
Software Development
Kit (SDK) A set of development tools used to create applications for a specific software package,
software framework, hardware platform, computer system, video game console, operating
system, or similar platform.
Space Recovery A utility that recovers space that Windows reports as being used but is actually empty,
available space that can be used by Dell Compellent Storage Center.
spare disk A designated or unused drive in a SAN that is used automatically to replace a failed drive.
Storage Area Network
(SAN) A storage area network (SAN) is a specialized network that provides access to high
performance and highly available storage subsystems using block storage protocols. The
SAN is made up of specific devices, such as host bus adapters (HBAs) in the host servers,
switches that help route storage traffic, and disk storage subsystems. The main
characteristic of a SAN is that the storage subsystems are generally available to multiple
hosts at the same time, which makes them scalable and flexible. Compare with NAS.
Storage Cluster In Dell Compellent Storage Center, multiple SAN controllers that are interconnected for the
purpose of improving reliability, availability, serviceability and performance (via load
balancing). Storage Center uses an active-active configuration to provide automatic
controller failover. A fully mirrored, battery-backed cache in each controller ensures data
reliability over a restart and allows volumes to migrate between controllers in the event of a
single controller failure.
Storage Clustering A Dell Compellent Storage Center feature that provides automatic controller failover through
multiple controllers in an active-active configuration. Fully mirrored, battery backup cache
provides fault tolerance and automatic restart/recovery in the event of a controller failure.
Storage Pool See pool.
Storage Profile In Dell Compellent Storage Center, a set of rules that define the drive types (tiers) on which
to store data and the RAID level to use for each tier.
Storage Type In Dell Compellent Storage Center, a set of attributes, including redundancy options and
block size, that control how space from a storage pool is allocated and protected.
striping Disk striping writes data across three or more disks in an array, but only uses a portion of the
space on each disk. The amount of space used by the "stripe" is the same on each disk
used. A virtual disk may use several stripes on the same set of disks in an array. See also
mirroring, and RAID.
symmetric
multiprocessing (SMP) Used to describe a system that has two or more processors connected via a high-bandwidth
link and managed by an operating system, where each processor has equal access to I/O
devices.
synch See Synchronous Replication.
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