Extending Virtual Drives; System Administrator's Edition; Fibre Channel Connection For Load Balancing And Redundancy; Automatic Vlp Failover - Fujitsu Siemens Computers pmn User Manual

Optional system functions

2.9.4 Extending virtual drives

This option allows you to increase the number of logical drives from the standard 32 per ICP
to up to 64 per ICP. This makes it possible to operate up to 256 logical drives in a single
CentricStor system.

2.9.5 System administrator's edition

The "System Administrator Edition" (SAE) option provides a graphical user interface for
administering the CentricStor system from a remote PC workstation.
The operator PC is included as part of the scope of delivery. This machine can be used to
monitor a number of CentricStor systems.

2.9.6 Fibre channel connection for load balancing and redundancy

This option provides the CentricStor system with a second internal FC network for data
transfer. This enables operation to be continued without interruption even when a switch
fails (in normal operation the data stream is distributed to both switches).

2.9.7 Automatic VLP failover

Typically almost all CentricStor control functions run on the VLP. This processor is largely
protected against disk errors by RAID system disks. If this processor were to fail never-
theless, the CentricStor system would have no controller and thus no longer be operable.
Ongoing save jobs would be completed, but new ones would no longer be accepted.
To prevent this situation occurring, the "automatic VLP failover" function is provided
(AutoVLP failover).
i
Further prerequisites:
– The VLP and the standby processor SVLP must be equipped with an external and an
internal LAN interface.
– The standby processor SVLP must be equipped and configured like the VLP.
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A release via key is required for the "automatic VLP failover" function, and the SVLP
must be configured to use it. This is done by the maintenance staff.
CentricStor - Virtual Tape Library
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