This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
biac:backup [2013/02/13 21:38] favorini [Default Snapshot Rules] |
biac:backup [2013/02/13 21:42] favorini [Default Snapshot Rules] |
||
---|---|---|---|
Line 17: | Line 17: | ||
===== User-Configurable Snapshots of Experiment Directories ===== | ===== User-Configurable Snapshots of Experiment Directories ===== | ||
- | You can request to have snapshots set up for your data directories. A snapshot is a point-in-time, | + | You can request to have snapshots set up for your data directories. A snapshot is a point-in-time, |
==== How to check your snapshots ==== | ==== How to check your snapshots ==== | ||
Line 25: | Line 25: | ||
==== Default Snapshot Rules ==== | ==== Default Snapshot Rules ==== | ||
- | If you don't specify | + | If you don't specify |
- Snapshot every night at 11:00 PM. Save 4 snapshots. | - Snapshot every night at 11:00 PM. Save 4 snapshots. | ||
- Snapshot every Sunday night at 11:00 PM. Save 3 snapshots (i.e., 3 weeks). | - Snapshot every Sunday night at 11:00 PM. Save 3 snapshots (i.e., 3 weeks). | ||
Line 36: | Line 36: | ||
==== Notes ==== | ==== Notes ==== | ||
- | * The snapshots will take up space in your directory. If your directory gets close to full, the oldest existing snapshots will need to be deleted to free up space. | + | * The snapshots will take up space in your directory, unless files are never changed, added or deleted. If your directory gets close to full, the oldest existing snapshots will need to be deleted to free up space. |
* It may be tempting to save 6 months of snapshots, but that will mean that when you delete a file or directory, its space will not be freed for 6 months. | * It may be tempting to save 6 months of snapshots, but that will mean that when you delete a file or directory, its space will not be freed for 6 months. | ||
* The more files change between snapshots, the more space will be taken up by the next snapshot. On the flip side, if nothing changes between snapshots, the snapshot will take up no space. | * The more files change between snapshots, the more space will be taken up by the next snapshot. On the flip side, if nothing changes between snapshots, the snapshot will take up no space. |