000-221 · Question #224
What is the minimum number of processing units which can be specified in the LPAR profile of an AIX LPAR hosted on a POWER7 server?
The correct answer is B. 0.05. On POWER7 servers, IBM micro-partitioning supports a minimum granularity of 0.05 processing units per LPAR profile, enabling fine-grained CPU sharing across many partitions.
Question
What is the minimum number of processing units which can be specified in the LPAR profile of an AIX LPAR hosted on a POWER7 server?
Options
- A0.1
- B0.05
- C0.01
- D1
How the community answered
(45 responses)- A2% (1)
- B84% (38)
- C4% (2)
- D9% (4)
Why each option
On POWER7 servers, IBM micro-partitioning supports a minimum granularity of 0.05 processing units per LPAR profile, enabling fine-grained CPU sharing across many partitions.
0.1 is a valid processing unit value but it is not the minimum; POWER7 supports values as small as 0.05.
POWER7 micro-partitioning allows processing unit values as low as 0.05 in an LPAR profile. This minimum granularity lets administrators allocate very small fractions of CPU capacity to LPARs, maximizing consolidation density on the server.
0.01 is below the supported minimum granularity for POWER7 micro-partitioning and cannot be specified in an LPAR profile.
1.0 is a full processing unit and a valid value, but it is far above the minimum supported fractional allocation.
Concept tested: POWER7 LPAR micro-partitioning minimum processing units
Source: https://www.ibm.com/docs/en/power-systems/power7?topic=partitioning-shared-processors
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