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Schedule and monitor data migration

Contributors netapp-madkat netapp-perveilerk
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Data migration must be scheduled and monitored as necessary to ensure data is placed according to the ILM policy within the required timeframe.

Schedule data migration

Avoid migrating data during core operational hours. Limit data migration to evenings, weekends, and other times when system usage is low.

If possible, do not schedule data migration during periods of high activity. However, if it is not practical to completely avoid the high activity period, it is safe to proceed as long as you closely monitor the relevant attributes and take action if they exceed acceptable values.

Monitor data migration

This table lists the attributes you must monitor during data migration, and the issues that they represent.

If you use traffic classification policies with rate limits to throttle ingest, you can monitor the observed rate in conjunction with the statistics described in the following table and reduce the limits if necessary.

Monitor Description

Number of objects waiting for ILM evaluation

  1. Select SUPPORT > Tools > Grid topology.

  2. Select deployment > Overview > Main.

  3. In the ILM Activity section, monitor the number of objects shown for the following attributes:

    • Awaiting - All (XQUZ): The total number of objects awaiting ILM evaluation.

    • Awaiting - Client (XCQZ): The total number of objects awaiting ILM evaluation from client operations (for example, ingest).

  4. If the number of objects shown for either of these attributes exceeds 100,000, throttle the ingest rate of objects to reduce the load on the StorageGRID system.

Targeted archival system's storage capacity

If the ILM policy saves a copy of the migrated data to a targeted archival storage system (tape or the cloud), monitor the capacity of the targeted archival storage system to ensure that there is sufficient capacity for the migrated data.

Archive Node > ARC > Store

If an alarm for the Store Failures (ARVF) attribute is triggered, the targeted archival storage system might have reached capacity. Check the targeted archival storage system and resolve any issues that triggered an alarm.