Using Backup and Restore Services on NetWare

For instructions on backing up and restoring eDirectory on a specific server rather than the entire tree, refer to Upgrading/Replacing Hardware on NetWare and Restoring eDirectory on NetWare after a Hardware Failure .

Use any SMS-compliant backup/restore utility to manage tape devices, target services, and backup and restore options. The following components are essential for backing up and restoring eDirectory on a NetWare server.

The Storage Management Engine (SME) is the back-end engine that processes backup/restore requests. SBCON.NLM is a basic SME provided by Novell for NetWare 6. If you are already using an SMS-compliant backup engine based on NetWare, you should continue to use it. If you use SBCON, then you should first load QMAN.NLM, which will manage the backup and restore jobs created in SBCON.

The Storage Management Data Requester (SMDR) communicates between the SME and the Target Service Agent (TSA) software. The first time that SMDR.NLM is loaded on a server in a directory, it prompts you for several configuration options, including the option to set up an SMDR object in the directory tree.
The SME and TSA can be on two different computers or on the same computer. If the SME and TSA are on different computers, then an SMDR is required on both machines. SMEs are available on NetWare, Windows NT, and Windows. SME on NetWare creates backups to a tape.

Target Service Agents for NDS^® (TSANDS) passes requests and commands between the SMDR and the eDirectory database and prepares the data for SME. In order to back up, TSANDS.NLM must be loaded on a server in the eDirectory tree.

The storage device interface communicates between SME and the storage devices.

Device drivers control the behavior of the storage devices.

TSAProxy registers the workstation with the host server.

IMPORTANT: It is good practice to perform a backup before an upgrade, or any other major directory operation. But no SMS-based backup/restore is required during an eDirectory upgrade.