HP XP P9500 Storage - Manual (Page 320)

Description Item
Tier 3 is a low-speed hierarchy. Tier 3
• Drive Type/RPM
Displays the hard disk drive type and RPM of tier 3.
• Capacity (Used/Total)
Displays the used and total capacity of tier 3.
1
•
Performance Utilization
Displays rate of the average used capacity while the performance information
is being collected.
2, 3
• Buffer Space (New page assignment/Tier relocation): Displays buffer spaces
for new page assignment and tier relocation of tier 3.
Notes:
1. Capacity (Used/Total) is updated asynchronously with Performance Utilization. It is updated whenever the View
Tier Properties window is opened.
2. Performance Utilization is updated when the performance monitoring information is collected. It is updated
asynchronously with Capacity (Used/Total). If ? is displayed, take actions according to the instruction shown in
the footer of the performance graph. If an error message and the countermeasure are not shown in the footer of
the performance graph, refresh the window. If ? still appears, call HP Technical Support.
3. If the monitoring mode is set to Continuous Mode, the value that is calculated with the past cycle monitoring data
weighted to the current cycle monitoring data is displayed.
The following table describes the details of the performance graph when pool information is present.
Description Item
Displays the pool name and ID. Performance Graph (pool
name
(pool ID))
Select the object to display a graph. Object
Entire Pool: Displays the graph of the entire pool.
Tiering Level: Displays the graph of the tier which is defined with the tiering level
list. Select the level from the Tiering Level list.
Select the level of the tier of which is displayed in the graph. If Entire Pool is
selected in the Object, this option appears dimmed. You can select All, or a
level from 1 to 5. Tiering Level
Displays the performance graph. Performance Graph
Period Mode: The vertical scale indicates the average number of I/Os per hour.
The horizontal scale indicates the capacity.
Continuous Mode: The vertical scale indicates the average number of I/Os per
hour. The number of I/Os is calculated with the past cycle monitoring data
weighted to the current cycle monitoring data. The horizontal scale indicates the
capacity.
Displays the Tier1 range. Tier1 Range
Displays the Tier2 range. Tier2 Range
Displays the start time and end time of the performance monitoring. Footer area
When acquisition of the performance graph fails, the Warning icon is
displayed along with an error message and solution. In the parentheses, an
error code is displayed.
The following describes how to read the performance graph when it contains pool information.
320 Thin Provisioning and Smart Tiers GUI reference