Refer to the Exhibit.
— Exhibit —
An administrator has created the DRS cluster shown in the Exhibit.
Based on the exhibit, which statement is true?
A.
Under CPU contention, Prod-VM1 receives four times the CPU resources than Test-VM1.
B.
The Prod-VM1 will always have more CPU resources than all other virtual machines.
C.
The Test-VM2 will always have less CPU resources than all other virtual machines.
D.
Under CPU contention, Test-VM1 will receive 25% of the total CPU resources.
Explanation:
Explanation/Reference:
A is correct:
https://pubs.vmware.com/vsphere-60/index.jsp#com.vmware.vsphere.resmgmt.doc/GUID-C0D2EFAE-1FE4-4867-AC3F-3E70D9A9ED59.html?resultof=%2522%2573%2568%2561%2572%2565%2573%2522%2520%2522%252b%256c%256f%2577%2522%2520%2522%256c%256f%2577%2522%2520
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Does placing High CPU share on prod-vm1 do anything when CPU shares on Prod-vm2 are both in the same resource pool? I assume the answer is no, since the answer is A?
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‘A’ is correct.
Total number of shares is: 8000 (High CPU shares for Prod RP) + 2000 (Low for Test RP) = 10,000. Prod-VM1 under contention gets 2/3 x 8000/10000 = 2/3 x 4/5 = 8/15.
Test-VM1 under contention gets 2/3 x 2000/10000 = 2/3 x 1/5 = 2/15. Thus the ratio between the two is 8/15 : 2/15 = 4.
B and C would be correct if they had “under CPU contention” instead of “always”.
D in incorrect because under CPU contention Test-VM2 gets 1/3 x 1/5 = 1/15 or approx. 6.5%.
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how it is 8000 shares for Prod RP?
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The CPU shares are calculated as follow in term of shares: 2000 High, 1000 Normal and 500 for low
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Shares are calculated as following:
VM CPU share values: 2000 High, 1000 Normal and 500 for Low
Resource Pool CPU share values: 8000 High, 4000 Normal and 2000 for Low
Ratio is Always 4:2:1
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