Kofax Communication Server 9.2.0 User Manual

Page 29

Environment Guide

Version 9.02.00

Diskperf –Y

After the measurement has been finished, consider especially following counters:

a.) Number of processors (n)

b.) Processor(s) total utilization in % (u)

along with information on CPU model and frequency (f) (e.g., Pentium IV 1500MHz)

c.) Processor(s) bandwidth in MHz (if already running in the VM)

Evaluation: Calculate estimated CPU bandwidth in MHz for the ESX server based on processor

utilization u in % on the physical system:

CPUMHz = (n * f * u)/100

In the case of real-time applications this is the minimum CPU bandwidth that must be granted for the

particular VM

Example: Total processor utilization u=50% on dual-PIV 1500MHz processor (f=1500) corresponds

with

CPUMHz = (2 * 1500 * 50)/100 = 1500MHz

2. Memory Committed Bytes

Evaluation: Determines the memory (RAM) demand.

In the case of real-time applications this is the minimum amount of RAM memory that must be granted

for the particular VM

3. Physical disk Transfers/Sec (IO per second = IOPS)

Physical disk Bytes/Sec

Network Bytes Total/Sec

Evaluation: Disk and network requirements must taken into account by the system administrator during

the planning phase of the particular ESX server

After the performance data of all P2V (physical to virtual) candidates have been collected, administrators

will make a plan how to combine different applications and their workloads on the particular ESX server(s).

However, availability of the planned resources must be checked during the server operation, refer to the

chapter KCS Platform Virtualized Operation.

5.2.5

Resource Estimation and Key Performance Indicators

TCOSS Server

This chapter provides resource requirements of the ESX Server resources (CPU, RAM, Disk and Network)

for a typical TCOSS Tandem Fax Server fully utilizing particular number of fax channels (e.g. 20, 40, 60)

using the following scenario:

1. TC/Link-FI (running in the separate VM) is sending 2 page image documents (ca. 100kByte TCI code)

2. Received documents are being sent via the half number of available fax channels and received via the

same number of channels (2 LS1V2 servers connected through loop PRI cable)

(Standard TCOSS UIF configuration with backreception activated, TCOSS Tandem Server configured

with 2 LS1V2 servers with 30 fax channels each, both LS1V2 servers connected through loop PRI

cable)