Planning your deployment 33
Replacing the PureDisk Deduplication Option with Media Server Deduplication on the same host
Table | Deduplication job load performance for a deduplication storage |
| server (continued) |
When | Description |
Clean up | Clean up is when the NetBackup Deduplication Engine performs maintenance |
periods | such as deleting expired backup image data segments. |
| NetBackup maintains the same number of concurrent backup jobs as during |
| normal operation. However, the average time to complete the jobs increases |
| significantly. |
Storage | NetBackup maintains the same number of concurrent backup jobs as during |
approaches | normal operation under the following conditions: |
full capacity | ■ The hardware meets minimum requirements. (More capable hardware |
| improves performance.) |
| ■ The amount of data that is stored is between 85% to 90% of the capacity |
| of the storage. |
| However, the average time to complete the jobs increases significantly. |
How file size may affect the deduplication rate
The small file sizes that are combined with large file segment sizes may result in low initial deduplication rates. However, after the deduplication engine performs file fingerprint processing, deduplication rates improve. For example, a second backup of a client shortly after the first does not show high deduplication rates. But the deduplication rate improves if the second backup occurs after the file fingerprint processing.
How long it takes the NetBackup Deduplication Engine to process the file fingerprints varies.
Replacing the PureDisk Deduplication Option with Media Server Deduplication on the same host
You can replace a PureDisk Deduplication Option agent from its media server host with a NetBackup PureDisk
Note: The PureDisk storage pool must be part of a PureDisk 6.6 or later environment.
