Dell NetWorker 19.9 Administration Guide

Server and client software requirements

Checkpoint restart requires the server and client software listed in the following table.

Platform requirements

Checkpoint restart is only supported on Linux and UNIX environments when performing standard save operations. You cannot use checkpoint restart with block-based backup or parallel save streams enabled.

Checkpoint restart is not supported on Windows platforms.

Client hostname requirements

Use a consistent convention for all NetWorker client hostnames. Do not configure client resources with both short and fully qualified domain names (FQDN).

Save set requirements

Backup of the Windows DISASTER_RECOVERY:\ save set is not supported. If a client with a DISASTER_RECOVERY:\ save set is enabled for checkpoint restart, the backup fails.

The checkpoint restart option is ignored for index and bootstrap save sets.

Client Direct requirements

Checkpoint restart supports Client Direct backups only to AFTD devices, and not to DD Boost devices. If a client is enabled for checkpoint restart and a Client Direct backup is attempted to a DD Boost device, then the backup reverts to a traditional storage node backup instead.

For Client Direct backups to AFTDs, checkpoints are made at least 15 seconds apart. Checkpoints are always made after larger files that require more than 15 seconds to back up.

Performance requirements

Enabling checkpoint restart might impact backup speed, depending on the datazone environment and configuration.

Checkpoint restart also might increase the size of the index because additional index records are created for the valid recoverable data. These partial save sets should not be manually removed from the index.