C1000-038 · Question #46
A customer is considering upgrading a z13s processor currently used as a Coupling Facility (CF). The customer wants to upgrade to a z14 ZR1 Max12, but also wants to install additional capacity in…
The correct answer is C. Integrated Coupling Adapter SR (ICA-SR) cards can be installed in the z14 ZR1 servers to provide. Option C is correct because the z14 ZR1 is specifically designed to use ICA-SR (Integrated Coupling Adapter – Short Range) cards for coupling connectivity, and these can be installed in the z14 ZR1 to provide the required coupling links back to the z13s servers in the…
Question
A customer is considering upgrading a z13s processor currently used as a Coupling Facility (CF). The customer wants to upgrade to a z14 ZR1 Max12, but also wants to install additional capacity in this new z14 for two new LPARs running Linux workloads for a total of six LPARs. A sizing exercise has determined that the combined CF and Linux workloads would total four ICFs, five IFLs, and 600GB memory. The other systems in the customer's environment are z13s servers that must be connected to the z14 ZR1. The customer is reviewing the design for factors that will influence the hardware configuration. Which of the following statements is true for this situation?
Options
- AThe number of available LPARs on z13s will not be sufficient to meet all of the customer's
- BThe memory requirement of the configuration will force the Max24 feature to be configured.
- CIntegrated Coupling Adapter SR (ICA-SR) cards can be installed in the z14 ZR1 servers to provide
- DThe ZR1 Max12 configuration will not provide sufficient InfiniBand slots for coupling links to the
How the community answered
(57 responses)- A7% (4)
- B32% (18)
- C44% (25)
- D18% (10)
Explanation
Option C is correct because the z14 ZR1 is specifically designed to use ICA-SR (Integrated Coupling Adapter – Short Range) cards for coupling connectivity, and these can be installed in the z14 ZR1 to provide the required coupling links back to the z13s servers in the customer's environment - this is the supported coupling mechanism for the ZR1 platform.
Option A is wrong because the z13s supports up to 30 LPARs, which is far more than enough to accommodate the customer's workloads; there is no LPAR shortage on the z13s side. Option B is wrong because 600GB of memory falls within the memory capacity of the Max12 configuration - it does not force an upgrade to the Max24 feature. Option D is wrong because the z14 ZR1 does not use InfiniBand for coupling links; ICA-SR is the correct technology, so worrying about "InfiniBand slots" is based on a false premise.
Memory tip: Associate the ZR1 with "SR" - both share those letters. The ZR1 uses ICA-SR (Short Range) for coupling, not InfiniBand (which belongs to larger, non-rack IBM Z frames). If you remember "ZR1 = SR coupling," you can immediately eliminate option D and confirm option C.
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