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Data Recovery and Disaster Recovery
We will now consider some scenarios where data loss has occurred and the options available to recover the data:
| Scenario 1 |
User inadvertently deletes a whole directory structure that contains proposals sent to clients and other external correspondence.
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| Scenario 2 |
User inadvertently makes schanges to a complex spreadsheet which invalidates the results; this error is not discovered for 3 weeks.
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| Scenario 3 |
A patch for the database server corrupts the database rendering the database inaccessible.
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| Scenario 4 |
The RAID controller in the server experiences a hardware failure and corrupts the RAID array.
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| Scenario 5 |
The Head Office is destroyed by a fire or there is a break-in overnight and the servers are stolen. |
Disaster Recovery options:
In the above scenarios we have referred to our three options. Information on these solutions is also available here:
Level 1: Non-dedicated Standby Server (Off-site)
Level 2: Dedicated Standby Server(s) (Off-site)
Level 3: Failover Server(s) (Off-site or On-site)
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