Huawei OceanStor S5600 Initial Configuration Manual page 132

B Glossary
Dynamic LUN
E
Expand the
member disk of
RAID group
dynamically
Expander module
Expansion master
LUN
Expansion slave
LUN
External LUN
F
F_Port
Failback
Failed RAID
group
Failover
Failure tolerance
Fibre channel
arbitrated loop
B-4
During the operations of defragment, expanding the member disk of
RAID group, modifying the stripe unit size and transferring the level of
RAID group dynamically, create a temporary LUN that can help data
transfer.
To add member disk in a RAID group without interrupting the normal
services of RAID group.
A component used for expanding.
The first LUN composing the connected LUNs is called expansion
master LUN.
In addition to the expansion master LUN, the other LUNs composing
the connected LUNs are expansion slave LUNs.
The LUN that is located in other arrays, except the array of the hyper
copy.
A port of the fiber channel on the optical network. Each F_Port of the
fiber channel on the optical network connects to the N_Port of a certain
node. F_Port is a kind of data frame route port. This kind of port is
transparent for its upper-layer protocol.
The recovery process of transferring the load of the faulty component
to the backup components.
The number of failed member disk in a RAID group exceeds the
maximum number, which causes data loss.
The system component with peer functions replaces a faulty component.
For example, if a controller fails, the failover process is started, that is,
another normal controller takes over the I/O load of the faulty controller.
The storage system can provide storage resources normally (system
performance may be compromised) when its one or multiple
components fail.
A form of Fibre Channel network in which up to 126 nodes are
connected in a loop topology. Nodes connected to Fibre Channel
Arbitrated Loop arbitrates for the single transmission that can occur the
loop at any instant.
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Copyright © Huawei Technologies Co., Ltd.
OceanStor S5600 Storage System
Initial Configuration Guide
Issue 02 (2009-09-30)