HP XP7 User Manual page 349

Item
Volume(Weighted average)
Tier1
Tier2
Tier3
Tier1 range
Tier2 range
The following describes how to read the performance graph when LDEV information is presented.
The vertical scale of the graph indicates an average number of I/Os by each hour and the horizontal
scale indicates a capacity, in GB, of the area where the I/Os are performed.
The two lines in the graph indicate tier 1 range and tier 2 range. These ranges are calculated
when the collection of performance monitoring data is complete (monitoring period is completed).
They show the boundary of each tier.
A maximum of 127 dots is shown in the graph. The following information appears over a dot in
the graph depending on where the cursor is placed.
Capacities, average I/Os, and total I/Os appear if the cursor is placed on the dot of the
Tier1, Tier2, Tier3, Volume or the Volume(Weighted average).
The lower value of the average I/Os appears if the cursor is placed on the dot of the Tier1
Range or the Tier2 Range.
The following table describes these items.
Item
Capacities
Average I/Os
Total I/Os
Description
the performance graph indicates the average number of I/Os on an hourly basis.
The horizontal scale of the performance graph indicates the capacity.
If there is no monitor data, this item does not appear.
If the continuous mode of the monitoring mode is specified, this item appears.
When this checkbox is selected, the performance graph appears. The vertical
scale indicates the average number of I/Os on an hourly basis. The number of
I/Os is a weighted, averaged with the monitoring data from the past cycle
weighted against the monitoring data from the current cycle. The horizontal
scale indicates the capacity.
If there is no monitor data, this item does not appear.
Displays the performance graph of tier1. The vertical scale indicates the average
number of I/Os on an hourly basis. The horizontal scale indicates the capacity.
If there is no monitor data in tier1, this item does not appear.
Displays the performance graph of tier2. The vertical scale indicates the average
number of I/Os on an hourly basis. The horizontal scale indicates the capacity.
If there is no monitor data in tier2, this item does not appear.
Displays the performance graph of tier3. The vertical scale indicates the average
number of I/Os on an hourly basis. The horizontal scale indicates the capacity.
If there is no monitor data in tier3, this item does not appear.
Displays the range in tier1.
If there is no monitor data in tier1, this item does not appear.
Displays the range in tier2.
If there is no monitor data in tier2, this item does not appear.
Description
The capacity (GB) of the area from the dot of the maximum value on the vertical
scale to a specified dot. The capacity of the dot on the vertical scale is 0.00 GB.
All I/Os are sorted into 127 sections. The average I/O is the representative I/O
number assigned to each section, based on the definition of the storage system.
By the total number of I/Os, the number of dots may be 127 or less.
The total number of I/Os in the section from the dot of the maximum value on the
vertical scale to a specified dot. The total I/Os is calculated using the average
I/Os and capacities in the specified section. If the specified dot is on the vertical
scale, the total I/Os is zero.
View Tier Properties window 349