Page Comparison

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• Controls the source and destination cluster groups

  • CLUSTER_GROUP_SOURCES

  • CLUSTER_GROUP_ARCHIVE 

  • CLUSTER_GROUP_BACKUP

  • CLUSTER_GROUP_VAULT

• Controls what to schedule

  • SCHEDULER_SKIP_ORGANISATIONS

• Controls to condition when to schedule

  • SCHEDULER_SIZE_TO_FREE

  • SCHEDULER_MINIMUM_SIZE

  • SCHEDULER_FREE_SPACE_THRESHOLD

  • SCHEDULER_MAX_WAITING_PERIOD Since 22.1

• Limits

  • SCHEDULER_MAXIMUM_FILES

  • SCHEDULER_CUTTING_MINIMUM_AGE

• Controls whether to write export files in parallel (see below)

  • SCHEDULER_PARALLEL_ORGANISATIONS Since 22.1

  • SCHEDULER_PARALLEL_AMOUNT Since 22.1

Is Online

In this mode the scheduler checks the tape databases belonging to its destination cluster groups where tapes are present. An newly detected tapes are marked as online, while any no longer detected tapes are marked as offline. See the property “is online” at Pools .

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Healing is a procedure where an export job is created from another mirrored copy (the other mirrored copy lead to the failed export) to the source cluster group and marking the mirrored copy that failed as logically deleted. In the next batch the scheduler will pick up the file from the source cluster group and write again to all destination cluster groups. For example if a record as written to three tapes A0, B0 and C0 and the B0 copy was discovered to be corrupt, the B0 will be deleted. After the next completed batch it will be written to new mirrored copies A1, B1 and C1 in addition to the already existing A0 and C0 copies.

Prioritization

By default the scheduler will prioritize bigger files over smaller ones.

The setting SCHEDULER_MAX_WAITING_PERIOD defines the maximum number of days since ingest the scheduler will wait before picking up a file, regardless of its size.

Parallel scheduling

By default the scheduler will export files to the same storage pool(s), until the configured Storage allocation algorithm picks (a) different pool.

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