ADIC/GRAU DAS and STK ACS Libraries

ADIC/GRAU DAS and STK ACS Integrations

Configuration Basics

When considering your environment and the configuration that is best for you, keep in mind that there are two ways to configure the ADIC/GRAU and STK ACS libraries with Data Protector: where each client accesses the library directly (direct access to the library), or where each client is connected to one system that controls the library robotics through the server (indirect access to the library). Regardless of the configuration you choose, direct or indirect, the DAS or ACS Media Agent software has to be installed on each client that directly or indirectly accesses the library robotics. For the ADIC/GRAU integration, each system on which you install the DAS Media Agent software is called a DAS Client. For the STK ACS integration, each system on which you install the ACS Media Agent software is called an ACS Client.

Choosing the Direct or Indirect Library Access Configuration

The direct library access configuration is recommended and, with previous versions of Data Protector, it was the only possible configuration. When either DAS or ACS Client has direct access to the library, there is no chance of single point of failure. That is, with the indirect access configuration, if the client with direct access to the library fails, all the clients that access the library through that system also lose access to the library.

Media Management Basics

In the ADIC/GRAU DAS and STK ACS library devices, the size of the repository with media depends on your license. A medium is identified by its volume serial number, or volser. The volser, similar to a barcode, uniquely identifies each medium during its life.

Media in the library can be used by many applications, not just by Data Protector, so that you have to know which applications use which media to prevent them from being overwritten.

Ideally, you will use the ADIC/GRAU or ACS library with Data Protector exclusively and let Data Protector manage the complete library, but if you have other applications using the library, you should take care to assign non-intersecting subsets of media to Data Protector and other applications. Also, note that Data Protector does not make use of scratch pools but maintains its own independent media allocation policy. This implies that if a specific medium has been allocated to Data Protector

Chapter 14

659

Page 689
Image 689
HP B6960-90078 manual Configuration Basics, Media Management Basics