Filter
Top Products
U41117-J-Z125-7-76 615
Glossary
Redundant Array of Independent Disks ➟ RAID system
Reorganisation
Depending on the configuration paramters, the logical volumes (LVs) saved on the
physical volumes (PVs) are automatically copied onto other physical volumes (PVs) of
the same physical volume group (PVG). This is done for the following reasons:
– Effective use of the physical volumes (PVs) available
– Prevention of physical and chemical aging processes
– Faulty or inaacessible physical volumes (PVs)
This procedure is called Reorganisation. Reorganisation of an individual physical disk
(PVs) 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 (GUI).
SAN
The entire data flow between all CentricStor components (ISPs and external RAID
systems) 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 VTC with the software components MAREN and ROBAR.
Small Backup Unit ➟ SBU
Standby VLP ➟ SVLP
Storage Area Network ➟ SAN
SVLP
The SVLP (Standby VLP) is an ISP of the type VLP in which the central management
processes envisaged for a VLP are inactive until it takes over the tasks of the VLP
Master when the latter crashes (AutoVLP failover function).
➟ section “VLP (Virtual Library Processor)” on page 27