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Merge pull request #8791 from open-sausages/pulls/4/file-migration-estimates

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Add file migration system requirements
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Maxime Rainville 2019-02-18 11:56:19 +13:00 committed by GitHub
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docs/en/02_Developer_Guides/14_Files/05_File_Migration.md
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@ -100,3 +100,18 @@ SilverStripe\Core\Injector\Injector:
```
You can also set this to `0` to disable the limit.
## System Requirements
The approach to running your file migration depends on your system and how many files you are migrating.
Use the following estimates to decide how you will run your file migration:
| Number of files | Method | Expected Execution Time | Approximate Memory Usage |
| --- | --- | --- | --- |
| < 150 | Web Request | 30 seconds | 6 MB |
| < 500 | Queued Job | 120 seconds | 8 MB |
| < 10000 | Command Line | 10000 seconds | 950 MB |
| 10000+ | Command Line or contact support | n/a | n/a |
Your exact experience will vary based on your host server, the size of your files and other conditions. If your site is hosted on a managed environement (e.g.: [Common Web Platform](https://www.cwp.govt.nz/service-desk) or [SilverStripe Platform](https://docs.platform.silverstripe.com/support/)), you may not have access to the command line to manually run the migration task. Contact your hosting provider's helpdesk if that's your case.