Which two tasks does the Pluggable Storage Architecture (PSA) perform? (Choose two.)
A.
Handles I/O queueing to the logical devices.
B.
Handles physical path discovery, but is not involved in the removal.
C.
Handles physical path discovery and removal.
D.
Handles I/O queueing to FC storage HBAs.
Explanation:
Explanation/Reference:
A and C are correct:
https://pubs.vmware.com/vsphere-60/index.jsp#com.vmware.vsphere.storage.doc/GUID-C1C4A725-8BE4-4875-919E-693812961366.html?resultof=%2522%2570%2568%2579%2573%2569%2563%2561%256c%2520%2570%2561%2574%2568%2520%2564%2569%2573%2563%256f%2576%2565%2572%2579%2522%2520
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When coordinating the VMware NMP and any installed third-party MPPs, the PSA performs the following tasks:
■
Loads and unloads multipathing plug-ins.
■
Hides virtual machine specifics from a particular plug-in.
■
Routes I/O requests for a specific logical device to the MPP managing that device.
■
Handles I/O queueing to the logical devices.
■
Implements logical device bandwidth sharing between virtual machines.
■
Handles I/O queueing to the physical storage HBAs.
■
Handles physical path discovery and removal.
■
Provides logical device and physical path I/O statistics.
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agreed
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