EMC Backup and Recovery for Oracle 11g OLTP Enabled by EMC ...
EMC Backup and Recovery for Oracle 11g OLTP Enabled by EMC ...
EMC Backup and Recovery for Oracle 11g OLTP Enabled by EMC ...
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Chapter 6: Testing <strong>and</strong> Validation<br />
The graph below shows that during the weekdays when level 1 (incremental)<br />
backups are sent to the appliance, the deduplication rate decreases.<br />
Line 1: shows the deduplication factor of 6:1.<br />
Note<br />
The graphs show the total “Data Written” to the DD880 increasing over time; this is<br />
also described as the logical capacity. The “Data Stored” refers to the unique data<br />
that is stored on the appliance. The “% Reduction” shows the storage savings gained<br />
from using Data Domain.<br />
Filesperset parameter<br />
When using a deduplication appliance, such as a DD880, it is best practice to ensure<br />
that multiplexing is disabled. The parameter that sets up multiplexing within <strong>Oracle</strong> is<br />
filesperset. To take full advantage of data deduplication, it is important to set this<br />
parameter to one. The graphs below show the effect of setting filesperset (FPS) to<br />
the default.<br />
<strong>EMC</strong> <strong>Backup</strong> <strong>and</strong> <strong>Recovery</strong> <strong>for</strong> <strong>Oracle</strong> <strong>11g</strong> <strong>OLTP</strong> <strong>Enabled</strong> <strong>by</strong> <strong>EMC</strong> CLARiiON, <strong>EMC</strong> Data Domain, <strong>EMC</strong> NetWorker,<br />
<strong>and</strong> <strong>Oracle</strong> <strong>Recovery</strong> Manager using NFS Proven Solution Guide<br />
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