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

Supported disk sizes for performance estimation
The following table lists the XP arrays and the disk size they support:
Table 5 Disk types supported on different arrays for performance estimation
Supported disk size in GBArray type
72 GB disk, 146 GB disk, 300 GB disk, 400 GB disk
XP24000
XP12000
Understanding PET data
Following is an example on estimating an XP24000 type array’s performance for the following
configuration:
Your inputs:
• Disk type – 15K RPM
• RAID type and RAID groups – 144 RAID groups for RAID 1 (2D+2D)
• Workload – 8K Random Writes
• Intensity – 4096 threads/sec
XP Performance Advisor PET estimate:
• 576 disks of type 146 GB (Number of Disks) are required
• IO/s on the disk set would be 46442/sec
• MB/s that the array can receive per second would be 380 MB
• Time taken for the array to respond (R.T (ms) for the read—write requests would be 91 R.T (ms)
Following is an example on estimating an XP24000 type array's raw and usable capacity:
Your inputs:
• Disk size – 146 GB
• RAID type and RAID groups – 144 RAID groups for RAID 1 (2D+2D)
XP Performance Advisor PET estimate:
• Raw disk capacity would be 84096 GB
• Disk space available for data storage (R1/R5/R6 Usable (GB)) would be 39744 GB
The available disk space shown is only for R1/R5 RAID types.
• Total or the usable storage capacity would be 39744 GB
Based on the above estimate, you can implement this configuration or modify the inputs to receive a
different configuration.
Estimating performance for XP24000 and XP12000 type arrays
To estimate performance for an XP24000 or XP12000 type array:
1. Click Performance Estimator in the left pane.
The Performance Estimator screen appears.
Using Performance Estimator for XP arrays274