The distribution of access (IOPS) to each volume is displayed on a per capacity basis. For volumes included in a two layer or three layer Tier pool, the distribution of capacity that is allocated to each tier is displayed in different colors. In addition, the set quota share of High/Middle is displayed in a vertical line.
The display procedure is as follows:
In the configuration dialog box, select a device in the Target field and "FTV" in the Resource field.
If you want to specify the displayed range of IOPS (vertical axis of the panel), select "Manual" in the IOPS Range field and input minimum/maximum values. Default is "Auto", which displays all the ranges in which data exists.
If you want to display an interval of IOPS (vertical axis of the panel) on a logarithm scale, select "Logarithm" in the IOPS Scale field. Default is "Linear", which is displayed on a linear scale.
Select one volume from a table, and then click Add.
The Access Status Chart panel for the volume is added to the Panel area.
The evaluation result of the latest generation is set to be displayed by default. When changing a displayed generation, select the target generation from a drop-down list of the Generation field. You can select from the latest generation to four generations back.
Point
Access status is displayed only when Automated Storage Tiering is enabled.
Hovering the mouse over a graph area on the panel displays the values of the IOPS and the capacity indicated by the location as a tooltip.
You can use an access status chart to evaluate the validity of FTV quota share specified by Automated Storage Tiering. Refer to the Storage Cruiser Operation Guide for Optimization Function for details.
During the period between evaluation by Automated Storage Tiering and capacity information acquisition by the polling service, the horizontal axis for quota share in the top of the graph and the vertical line for quota share may not be displayed, or quota share may be calculated based on the capacity information before the polling service starts. If you refer to an access status chart during this period, perform the procedure that is described in "9.14.25 Update Automated Storage Tiering Information" beforehand.
