HP 3PAR StoreServ 7200 2-node Manual page 89
Hp 3par storeserv storage concepts guide (os 3.1.2 mu2) (qr482-96384, june 2013)
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Also See for 3PAR StoreServ 7200 2-node:
- Administrator's manual (204 pages) ,
- Manual (107 pages) ,
- Service manual (66 pages)
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IMP
Initiator Mode Prohibited. A system setting that, when enabled, prevents a port from being set to
initiator mode.
independent
An electrical circuit that does not share a circuit breaker with another electrical circuit.
electrical circuit
initiator mode
The firmware setting for a Fibre Channel port that is connected to a drive cage.
initiator port
A port that is connected to and relays commands to physical disks within a drive cage. Also
known as a disk port.
iSCSI adapter
An iSCSI PCI host bus adapter (HBA) located in a controller node. An iSCSI adapter connects a
controller node on an iSCSI port to a host.
iSCSI name
The name of an iSCSI path. You use an iSCSI name to identify that iSCSI path to a host.
LD
Logical disk. A collection of chunklets that reside on different physical disks and that are arranged
as rows of RAID sets. When you create a CPG, the system creates and groups logical disks and
assigns those logical disks to the CPG.
LIP
Loop Initialization Primitive. The protocol by which a Fibre Channel Arbitrated Loop (FC-AL)
network initializes upon power up or recovers after a failure or other unexpected condition.
During loop initialization, the nodes present on the arbitrated loop identify themselves and acquire
addresses on the loop. No data can be transferred on an arbitrated loop until initialization
completes.
logging
Temporarily saving data to logging logical disks when physical disks are out of service (due to
failure or during replacement procedures).
logging LD
Logging logical disk. A logical disk used for logging. During system setup, the system creates a
20 GB RAID 10 logging LD for each controller node in the system.
LUN
Logical Unit Number. A number used to access a virtual volume that has been assigned to a
particular host on a particular port.
maintenance PC
A laptop computer running Windows 2000 used by a field technician to initiate direct
communication with the system service processor and controller nodes.
matched-set VLUN
A rule that allows a particular host connected to a particular port to see a virtual volume as a
template
specified LUN.
message code
A keycode that identifies a system alert.
mirror
One member of a group of mirrored chunklets, which is also known as a RAID 1 set.
mirroring
A data redundancy technique used by some RAID levels and in particular RAID 1 to provide data
protection on a storage array.
navigation tree
The navigation tree appears in a pane that occupies the left side of the HP3PAR Management
Console main window. Each system and system object appears as an icon in the navigation tree.
no stale snapshots
Virtual copy policy that prevents changes being written to a base volume when it does not have
enough snapshot data or administration space to prevent virtual copies from becoming invalid,
or stale, as a result.
node cabinet
A cabinet that houses the system backplane and controller nodes.
original parent
The original base volume from which a series of virtual or physical copies has been created. Any
base volume
volume can be the parent from which one or more virtual copies is created, but for each set of
related copies there is only one original parent base volume.
parent volume
A virtual volume from which a virtual or physical copy is made.
parity
A data redundancy technique used by some RAID levels (in particular RAID 5) to provide data
protection on a storage array.
parity set position
The group of chunklets that occupy the same position within a RAID 5 logical disk parity set.
PCI load card
An electronic circuit board that is inserted into a controller node's PCI slot. The PCI load card
allows the node to recognize an unoccupied PCI slot.
PCM
Power Cooling Module. A hardware component that includes the battery, fan, and power supply.
PDU
Power Distribution Unit. A device that takes in AC power from a main power source (for example,
an electrical wall outlet) and distributes the power to the power supplies in a system.
physical copy
A point-in-time copy of an entire virtual volume.
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