Holding disk: Difference between revisions
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(added benefits of a holding disk.) |
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An intermediate storage area for caching backup data. Specify per [[DLE]] in {{man|5|amanda.conf}}. | An intermediate storage area for caching backup data. Specify per [[DLE]] in {{man|5|amanda.conf}}. | ||
A holding disk provides these key benefits: | |||
* It allows data to be streamed to media at full speed, preventing tape buffer under-runs and shoe-shining of tapes. | |||
* It can act as a hedge against media failure. Data is first backed-up to the holding disk, and then later spooled to media when it is available. | |||
* It gives you dump parallelism. With a holding disk, amanda can do more at the same time, speeding things up. It can build several dumps simultaneously on the holding disk while copying one to tape. Changing a tape doesn't mean stopping the backups. | |||
Revision as of 21:13, 15 July 2010
An intermediate storage area for caching backup data. Specify per DLE in amanda.conf(5).
A holding disk provides these key benefits:
- It allows data to be streamed to media at full speed, preventing tape buffer under-runs and shoe-shining of tapes.
- It can act as a hedge against media failure. Data is first backed-up to the holding disk, and then later spooled to media when it is available.
- It gives you dump parallelism. With a holding disk, amanda can do more at the same time, speeding things up. It can build several dumps simultaneously on the holding disk while copying one to tape. Changing a tape doesn't mean stopping the backups.