VMware VIEW COMPOSER 2.5 - ARCHITECTURE PLANNING EN-000350-01 Specifications download pdf (Page 32)

ESX swap file

This file, which has a .vswp extension, is created if you reserve less than 100

percent of a virtual machine's RAM. The size of the swap file is equal to the

unreserved portion of guest RAM. For example, if 50 percent of guest RAM is

reserved and guest RAM is 2GB, the ESX swap file is 1GB. This file can be stored

on the local datastore on the ESX host or cluster.

ESX suspend file

This file, which has a .vmss extension, is created if you set the desktop pool

logoff policy so that the virtual desktop is suspended when the end user logs

off. The size of this file is equal to the size of guest RAM.

RAM Sizing for Specific Monitor Configurations When Using PCoIP

If you use PCoIP, the display protocol from VMware, the amount of extra RAM that the ESX host requires

depends in part on the number of monitors configured for end users and on the display resolution. Table 4-1

lists the amount of overhead RAM required for various configurations. The amounts of memory listed in the

columns are in addition to the amount of memory required for other PCoIP functionality.

Table 4-1. PCoIP Client Display Overhead

Display

Resolution

Standard Width, in Pixels Height, in Pixels

1-Monitor

Overhead

2-Monitor

Overhead

4-Monitor

Overhead

VGA 640 480 2.34MB 4.69MB 9.38MB

SVGA 800 600 3.66MB 7.32MB 14.65MB

720p 1280 720 7.03MB 14.65MB 28.13MB

UXGA 1600 1200 14.65MB 29.30MB 58.59MB

1080p 1920 1080 15.82MB 31.64MB 63.28MB

WUXGA 1920 1200 17.58MB 35.16MB 70.31MB

QXGA 2048 1536 24.00MB 48.00MB 96.00MB

WQXGA 2560 1600 31.25MB 62.50MB 125.00MB

When you consider these requirements, note that virtual machine configuration of allocated RAM does not

change. That is, you do not need to allocate 1GB of RAM for applications and another 31MB for dual 1080p

monitors. Instead, consider the overhead RAM when calculating the total physical RAM required for each ESX

server. Add the guest operating system RAM to the overhead RAM and multiply by the number of virtual

machines.

RAM Sizing for Specific Workloads and Operating Systems

Because the amount of RAM required can vary widely, depending on the type of worker, many companies

conduct a pilot phase to determine the correct setting for various pools of workers in their enterprise.

A good starting point is to allocate 1GB for Windows XP desktops and 32-bit Windows Vista and Windows 7

desktops and 2GB for 64-bit Windows 7 desktops. During a pilot, monitor the performance and disk space

used with various types of workers and make adjustments until you find the optimal setting for each pool of

workers.

VMware View Architecture Planning Guide

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