VMware VIEW COMPOSER 2.5 - ARCHITECTURE Manuale Utente Scaricare il pdf (Pagina 51)

EMC Infrastructure for Virtual Desktops Enabled by EMC VNX Series,

VMware vSphere 4.1, VMware View 4.5, and VMware View Composer 2.5 Proven Solution Guide

View recompose results

Test

methodology

This test was conducted by creating new pools from the View Manager console. No

users were logged in after deploying new desktops.

Overlays are added to the graphs to show when the last power-on task completed

and when the IOPS to the pool LUNs achieved a steady state.

A recompose operation deletes existing desktops and creates new desktops. To

enhance the readability of the charts and to show the array behavior during high I/O

periods, only those tasks involved in creating new desktops were performed and

shown in the graphs. Both desktop pools were created simultaneously and took

approximately 128 minutes to complete the entire process.

The timeline for the test was as follows:

• 3 to 109 minutes—vCenter Server tasks completed

− 3 to 10 minutes—Copy the new replica image for pool1

− 10 to 19 minutes—Create new desktops for pool1

− 12 to 19 minutes—Copy the new replica image for pool2

− 19 to 109 minutes—Create new desktops for pool1 and pool2

• 109 to 128 minutes—Settling time for both the pools

In all the graphs, the first highlighted spike of the I/O is the replica copy operation of

pool1.

EFD replica

disk load

The following graph shows the IOPS from one of the EFDs that contains the replica

data store.

Copying the new replica images caused heavy sequential write workloads on the

EFDs. Each EFD serviced nearly 1,400 IOPS at peak load. This indicates that the

disks were not loaded heavily during this test.

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VMware VIEW COMPOSER 2.5 - ARCHITECTURE Manuale Utente Pagina 51