Which two statements are about Unplanned Device Loss in a vSphere 5 environment?
(Choose two)
A.
It is condition where an ESXi host determines a device loss has occurred that was not planned.
B.
Performing a storage rescan restores access to determine why device loss occurred.
C.
It is a condition where an ESXi host is unable to determine why device loss occurred.
D.
Performing a storage rescan removes the persistent information related to the device.
Explanation:
Page 132 from vsphere-esxi-vcenter-server-50-storage-guide.pdf
Page 132 from vsphere-esxi-vcenter-server-50-storage-guide.pdf
I believed the correct answer are C & D
Problem
Although the ESXi host cannot determine the reason for a device loss (C) , the host supports the loss detection.
When the device becomes permanently unavailable, ESXi receives sense codes from storage arrays and
recognizes that the device is permanently lost, not just temporarily unavailable. ESXi marks the device as not
connected and a warning about the device being permanently unavailable appears in the VMkernel log file.
Solution
If you experience an unplanned device loss condition, you must unmount any related datastores and perform
a storage rescan to remove the persistent information associated with the device (D). See the following topics:
Thanks Sam.
Fixed.
Sam is correcet, Here is the link: http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.storage.doc_50%2FGUID-BA39DB47-F8DB-4945-B061-1B6FF3DD12E1.html Key phrase here from VMware is “ESXi host CANNOT determine why”. ESXi has no way of knowing that the device loss was not planned.
D is really the correct answer. Regardless of what the documentation says, these are dumb machines. They will never be able to determine why there is a device loss or if it were planned.
This shows either a lack of english comprehension by the people who wrote this question, or a lack of understanding of technology. We have not quite reached the technological level of I,Robot!