Keep-balance » History » Version 3
Anonymous, 04/17/2013 02:50 PM
| 1 | 1 | Tom Clegg | h1. Data Manager |
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| 3 | 3 | Anonymous | The Data Manager enforces policies concerning data access and storage resource consumption. The Data Manager primarily works with [[Keep]], the content addressable distributed file system, to provide additional data management functionality. |
| 4 | 1 | Tom Clegg | |
| 5 | Its responsibilities include: |
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| 7 | * Granting access to data blocks (according to permissions found in the system/metadata DB) |
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| 8 | * Monitoring and adjusting redundancy of valuable data blocks (according to targets found in system/metadata DB) |
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| 9 | * Deleting unneeded data blocks to increase disk space |
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| 10 | * Rebalancing data blocks among available disks |
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| 11 | * Monitoring block read and write activity |
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| 12 | * Monitoring free disk space |
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| 13 | * Monitoring disk activity |
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| 14 | * Monitoring disk performance and health (via SMART and empirical measurement) |
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| 15 | * Tracking physical disk changes (disks added, removed, moved) |
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| 16 | 2 | Tom Clegg | * Collecting per-user, per-group, per-node, and per-disk usage statistics |