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

DescriptionScreen elements
Displays the ACP Pair status for the selected XP array.
Click ACP for an XP array to view the MP utilization
and backend transfers for all the installed ACP pairs.
Clicking an individual ACP pair displays its MP
utilization and backend transfers, and the RAID group
information for the ACP pair. If RAID groups belonging
to the same ACP pair are distributed across two
performance data collection schedules for an XP array,
only the latest RAID group performance data collected
by either of the schedules is displayed. For more
information, see “Viewing ACP utilization” on page 181.
In a ThP environment, the ACP Pair Backend group box
displays values based on the following:
• If a ThP pool is associated with one DKA, the
backend transfers on the ThP pool are reported as
served by that DKA.
• In the following conditions, the backend transfers
on a ThP pool are not included in the backend
transfers shown for the associated DKAs. In such
cases, a * is displayed beside the DKA:
• If a ThP pool is associated with more than one
DKA, the following message is displayed in the
ACP Pair Backend group box:
THP Backend load may be spread
across multiple DKA's.
• If the ThP pool LDEVs belong to concatenated
RAID groups spread across multiple DKAs, the
following message is also displayed in the ACP
Pair Backend group box:
There are one or more concatenated
RAID groups.
ACP Pair Backend group box
Each resource displays the current value either in IO/s or MB/s, and displays a bar that represents
the maximum possible value, and is measured in MB used over the amount of cache installed. The
maximum cache memory is 256 GB for the XP24000 and XP12000, 128 GB for the XP20000, 32
GB for the XP128 and XP10000, and 64 GB for the XP1024 type arrays.
An XP10000 type array and an SVS200 appliance have a mix PCB configuration. The two
configurations, MIX-A and MIX-F, have four CHIP MPs and four ACP MPs on the same processor
board. There can be two mix PCB configurations for the array. The mix PCB shows four MPs in the
CHIP section that serve as CHIPs and four MPs in the ACP section, which serve the ACP functionality.
It can also have two additional optional CHIPs, B and E. These optional CHIPs can have only CHIP
MPs. SVS200 is external storage and does not have any internal disks.
HP StorageWorks XP Performance Advisor Software User Guide 177