Keep-balance » History » Revision 3
Revision 2 (Tom Clegg, 04/17/2013 12:58 AM) → Revision 3/7 (Anonymous, 04/17/2013 02:50 PM)
h1. Data Manager
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.
Its responsibilities include:
* Granting access to data blocks (according to permissions found in the system/metadata DB)
* Monitoring and adjusting redundancy of valuable data blocks (according to targets found in system/metadata DB)
* Deleting unneeded data blocks to increase disk space
* Rebalancing data blocks among available disks
* Monitoring block read and write activity
* Monitoring free disk space
* Monitoring disk activity
* Monitoring disk performance and health (via SMART and empirical measurement)
* Tracking physical disk changes (disks added, removed, moved)
* Collecting per-user, per-group, per-node, and per-disk usage statistics