Oracle Database 12c: Multitenancy Essentials — Question 3

You are patching your Exadata X6 Database Machine by applying a new image to the Storage Servers in a rolling fashion.
Your ASM environment on the Database Machine has five diskgroups stored on an unpartitioned Exadata storage grid, with redundancy settings as shown:
1. DATA_DBM1 Normal Redundancy
2. RECO_DBM1 Normal Redundancy
3. DBFS_DG Normal Redundancy
4. DATA2_DBM1 High Redundancy
5. DATA3_DBM1 High Redundancy
Which two diskgroups will not suffer from any data loss throughout the patching process even if there is a single disk failure on one of the cells

Answer options

Correct answer: D, E

Explanation

The diskgroups with Normal Redundancy, specifically DATA_DBM1 and RECO_DBM1, can tolerate a single disk failure without losing data. In contrast, the diskgroups with High Redundancy (DATA2_DBM1 and DATA3_DBM1) are designed to withstand multiple failures, but that does not apply to the scenario of a single disk failure affecting data loss.