HP 3PAR T-Class Installation and Deinstallation Guide

controller node
chassis
An enclosure that houses all the controller nodes of a storage system.
copy space See snapshot data space
copy-on-write A technique for preserving data by making a copy of it before executing a command that would
overwrite it.
copy-on-write
snapshot
A snapshot of a virtual volume made with the copy-on-write technique. Consists of a pointer to
the source volume and a record of every change made to the source volume since the snapshot
was created.
Customer
Controlled Access
A software tool that restricts connections between the service processor and the HP technical
support center. Customer Controlled Access is independent of the user’s network firewall and
works whether the connections are made through the Internet or through a point-to-point modem
connection.
data cache The dual in-line memory modules (DIMMs) that support the 3PAR ASIC located in a controller
node.
data cache DIMM A single data cache memory module.
data cache riser
card
A printed circuit board with DIMM sockets that hold data cache memory modules.
destination volume The virtual volume to which data is copied.
disk port See initiator.
disk scrub An action by the system that periodically reads and writes to the system IDE disk to ensure that
the disk is working properly.
dmag See drive magazine.
drive bay A space in a drive chassis into which a drive magazine is inserted.
drive cage A storage system component that consists of a drive cage midplane, two drive cage FC-AL
modules, two power supplies, and up to 20 physical disks in a maximum of five drive magazines.
A metal divider in the center of a drive chassis separate two drives cages from each other.
drive cage FC-AL
module
An electronic circuit board that contains a pair of FC-AL connections. Each FC-AL interface module,
located in a drive chassis, connects a drive cage to a controller node or to another drive cage.
drive cage
midplane assembly
An enclosure that houses a drive cage midplane and its two power supplies.
drive chassis Two drive cages housed side-by-side in an enclosure that takes up 4U of an EIA-standard rack.
drive chassis
cabinet
A cabinet that is connected to a node cabinet and does not contain controller nodes.
drive chassis
housing
The enclosure that houses the components of a drive chassis.
drive magazine An electronic circuit board mounted on a mechanical structure that is inserted into a drive bay
in a drive cage. A drive magazine holds up to four physical disks.
drive magazine
filler panel
A panel used to seal off an empty drive bay. All slots in a drive cage must be sealed for EMI and
airflow considerations.
drive mount A metal bracket used to secure a physical disk to a drive magazine. Each disk requires two drive
mounts.
Ethernet adapter A PCI host bus adapter (HBA) located in a controller node. The Ethernet adapter connects a
controller node to a network for the purpose of transferring data through the network.
event A normal system occurrence.
export To make a virtual volume available to a particular instance of a host (that is, a host WWN that
is actually present on a port) by creating an association between the name of the virtual volume
and a LUN for that host on that port. See also LUN, VLUN, and VLUN template.
FC-AL Stands for Fibre Channel-Arbitrated Loop. FC-AL is a fast serial bus interface standard used to
connect storage devices to system.
FC-AL module See drive cage FC-AL module.
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