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System Description
Standard Solution
The Scalar DLC standard (basic) solution keeps all Scalar DLC components (server, database) on a single
host / PC that is connected to both the library and client(s). The client can work with the library when the
Scalar DLC software is started and the library is online.
The Scalar DLC standard solution requires a single PC, the library, and the interface cables to provide the
connection between PC (Scalar DLC host) and library. Additional cabling may be required to provide the
client connections (SCSI/FC) and using SNC.
For the requirements and installation instructions see
Setting Up the Standard Solution
on page 7.
Failover Solution
The Scalar DLC Failover (redundant, cluster) solution is provided for the clients using the Microsoft Cluster
service. This solution allows the user to have a shared disk with the Scalar DLC database and two hosts
containing the installed components of Scalar DLC software; for redundancy reasons, one host is online
and the other is offline. If an error occurs and the online Scalar DLC host turns offline, the other host is
immediately online, so the user may not even notice there has been a problem with the host, and the
customer engineer can work with the problem host without stopping the work of Scalar DLC software.
The Scalar DLC failover solution requires two identical PCs, a RAID system, the library, and the interface
cables to provide the connections between PCs (Scalar DLC hosts), RAID (shared database), and library.
Additional cabling may be required to provide the client connections (SCSI/FC) and using SNC.
For the requirements and installation instructions, see
Setting Up the Failover Solution
on page 13.
Self-Domain Solution
From version 2.5, Scalar DLC also offers a self-domain solution. This configuration of the Scalar DLC acts
the same way as basic failover solution and has the same hardware requirements, however it is installed
without an external domain controller, thus the setup does not exactly duplicate the failover solution
instructions.
In terms of the network security, the self-domain solution is the most reliable method that Scalar DLC
currently can provide.
For the details see
Setting Up the Self-Domain Solution
on page 33.
Содержание SDLC 2.7
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Страница 130: ...124 SCSI FC Target Drivers...