Data Guard Vs SAN to SAN Replication | ||
Oracle Data Guard | SAN-to-SAN | |
Implementation Cost | Low | High |
Database Aware | Yes | No |
Granularity of Replication | Transaction level | Disk Block Level |
Distance Limitations | No Limitations | Limitations Exist |
Recovery from human error or corruption | Easy to detect and can be recovered by replaying logs | Replicates block as it is and possible that corrupt blocks gets replicated. |
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