Home » VMware » 2V0-621 » Which two tasks does the Pluggable Storage Architecture (PSA) perform?
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.
Correct Answer: AC
Explanation/Reference:
Explanation:
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.
Reference: https://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.storage.doc%2FGUID-C1C4A725-8BE4-4875-919E-693812961366.html