HP XP7 PA Software User Guide

12 Using Performance Estimator for XP disk arrays
This chapter discusses the performance estimation for XP disk arrays.
IMPORTANT: The Performance Estimator does not support XP7, XP20000, and XP10000 disk
arrays.
Introduction
HP XP7 Performance
Advisor enables you to determine the optimal performance of your XP
(XP24000, XP12000, P9500) disk Arrays after configuration collection is complete for these XP disk
arrays. It provides a framework called the Performance Estimator for estimating their performance.
Performance Estimator focuses on the RAID groups, instead of the LDEVs or
the LUNs. Based on
the RAID group configuration and the workload that you select, the Performance Estimator helps
you to estimate the disk capacity and array performance data, such as the I/O per second, MB/
second, LDEV response time. The estimation is based on the RAID groups and predefined
workloads that you can select for the disk array. The subsystem configuration parameters can be
rapidly entered and the results are accurate to within 20%.
CAUTION: The numbers displayed are only an estimate. The results shown are based on readings
taken in a controlled environment. HP cannot guarantee the results in your data center.
Supported disk types for performance estimation
The following table lists the disk arrays and the disk types they support.
Table 25 Disk types supported for performance estimation
Supported disk typeArray type
15K RPM, 10k RPMXP24000
XP12000
15K RPM, 10K RPM, 7.2K RPMP9500
Supported disk sizes for performance estimation
The following table lists the disk arrays and the disk size they support.
Table 26 Disk types supported for performance estimation
Supported disk size in GBArray type
72 GB disk, 146 GB disk, 300 GB disk, 400 GB diskXP12000
Disks of any size.XP24000
P9500
Understanding Performance Estimator data
Following is an example on estimating performance of an XP24000 Disk Array for the following
configuration:
Your inputs:
• Disk type –15K RPM
• RAID type and RAID groups –144 RAID groups for RAID 1 (2D+2D)
Introduction 311