HP StorageWorks XP Performance Advisor Software v4.6 User and Troubleshooting Guide (T1789-96094, June 2010)

13 Using Performance Estimator for XP
arrays
This chapter discusses the following topics:
• “Introduction” on page 273
• “Disk types supported for performance estimation” on page 274
• “Understanding PET data” on page 274
• “Estimating performance for XP24000 or XP12000 type of array” on page 274
Introduction
XP Performance Advisor enables you to determine the optimal performance of your XP24000 and
XP12000 type arrays after configuration collection is complete for these XP arrays.
It provides a framework called Performance Estimator (PET) for estimating the performance of these
XP arrays. You can access PET by clicking Performance Estimator in the left pane. PET focuses on
RAID groups, instead of LDEVs or LUNs. It helps you estimate the disk capacity and RAID group
configuration that your XP array might require for managing a particular workload. The estimation is
based on the RAID groups and predefined workloads that you can select for your XP array. Subsystem
configuration parameters can be rapidly entered, and the results are accurate to within 20%.
CAUTION:
The numbers displayed are only an estimate. Results shown are based on readings taken in a controlled
environment. HP cannot guarantee the results in your data center.
IMPORTANT:
PET does not support the following type of XP arrays – XP1024/128, XP512/48, XP20000, XP10000,
SVS200, and XP256.
Supported disk types for performance estimation
The following table lists the XP arrays and the disk types they support:
Table 4 Disk types supported on different arrays for performance estimation
Supported disk typeArray type
15K RPM, 10k RPM
XP24000
XP12000
HP StorageWorks XP Performance Advisor Software User Guide 273