Svlp – FUJITSU CentricStor V3.1D User Manual
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Glossary
Redundant Array of Independent Disks
➟
Reorganisation
Depending on the configuration paramters, the logical volumes (
s) saved on the
physical volumes (
s) are automatically copied onto other physical volumes (
s) of
the same physical volume group (
). This is done for the following reasons:
–
Effective use of the physical volumes (
s) available
–
Prevention of physical and chemical aging processes
–
Faulty or inaacessible physical volumes (
This procedure is called Reorganisation. Reorganisation of an individual physical disk
(
s) can also be initiated by the administration.
➟
section “Reorganization of the tape cartridges” on page 37
➟
section “Reorganization” on page 73
SAE
The SAE enables CentricStor to be operated from a remote PC (SAE computer) via the
graphical user interface (
).
SAN
The entire data flow between all CentricStor components (
s and external
s) is handled via an internal Starage Area Network (SAN) which can be configured
redundantly. It is implemented by one high-performance FC switch or, if redundancy is
provided, by two high-performance FC switches.
2 FC technologies are available: Multi Mode and Single Mode. In Multi Mode the devices
which are connected via Fibre Channel can be located up to 300 m from each other; in
Single Mode
the distance can be as much as 10 km.
SBU
The SBU (Small Backup Unit) is a small CentricStor model and consists of a robot
system and a
with the software components MAREN and ROBAR.
Small Backup Unit
➟
Standby VLP
Storage Area Network
➟
SVLP
The SVLP (Standby VLP) is an ISP of the type
in which the central management
processes envisaged for a
are inactive until it takes over the tasks of the
Master when the latter crashes (
).
➟