View Tier Properties window
This window shows tier properties and a performance graph:
When the pool name (pool ID) appears in the graph banner, you are looking a pool information. When the LDEV name (LDEV ID) appears in the graph banner, you are looking at V-VOL information.
For pools
The following tables list the View Tier Properties information.
When selecting Entire Pool or Tiering Policy
|
Item |
Description |
|---|---|
|
Entire Pool or Tiering Policy |
Select the following resource to display the performance graph.
|
|
All(0), and from Level1(1) to Level31(31) |
Select the Tiering Policy. The performance graph that corresponds to the selected tiering policy appears. |
Tier Properties table
|
Item |
Description |
|---|---|
|
Pool Name(ID) |
Displays the pool name and identifier. |
|
Tier name |
Displays the tier names: Tier1, Tier2, Tier3, and Total. Each column displays information about the tier. |
|
Drive Type/RPM |
Displays the data drive type and RPM of tier. If multiple types exist in a tier, Mixed is displayed. For an external volume, Drive Type displays External Storage with the value of the external LDEV tier rank. |
|
Buffer Space |
Displays the following buffer spaces.
|
|
Total Capacity |
Displays the total capacity of each tier and total capacity of the pool. |
|
Used Capacity (Used %) |
Displays the percentage of the used capacity for the pool and each tier. The field is updated asynchronously with the Recent Tier Utilization table and when the View Tier Properties window is opened. The Used Capacity of each tier may differ from the Total value. |
|
Tiering Policy: tiering policy name |
Displays the used capacity size and percentage related to the tiering-policy of the pool and each tier. This item displays when you make a Tiering Policy selection. |
Recent Tier Utilization (monitoring period) table
|
Item |
Description |
|---|---|
|
Header area |
If a error occurs, a message appears. |
|
Tier name |
Displays the tier names: Tier1, Tier2, Tier3, and Total. Each column displays information about the tier. |
|
Performance Utilization |
Displays the percentage of progress in performance utilization processing. |
|
Average Number of I/O (per Hour) |
Displays the average number of I/Os on an hourly basis.* |
|
Tiering Policy: tiering policy name |
Displays the average number of I/Os for the pool and each tier that are related to the tiering-policy. This item displays when you make a Tiering Policy selection.* |
|
* This field is updated when performance monitoring information is collected, asynchronously with Used Capacity (Used %). If ? is displayed, take the actions displayed in the header area of the Recent Tier Utilization table. If an error message and countermeasure are not shown in the header area of the Recent Tier Utilization table, refresh the window. If ? continues to display, call the Hitachi Data Systems customer support. |
|
Performance Graph
|
Item |
Description |
|---|---|
|
Performance graph |
Displays the performance graph of the entire pool or tiering policy. |
|
Pool |
If Entire Pool and the period mode of the monitoring mode are specified, this item appears. When this check box is selected, the performance graph appears. The vertical scale of 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. |
|
Pool(Weighted average) |
If Entire Pool and the continuous mode of the monitoring mode are specified, this item appears. When this check box 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. |
|
Policy |
If Tiering Policy and the period mode of the monitoring mode are specified, this item appears. When the check box is selected, the performance graph appears. The vertical scale of 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. |
|
Policy(Weighted average) |
If Tiering Policy and the continuous mode of the monitoring mode are specified, this item appears. When the check box is selected, the performance graph appears. The vertical scale of 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. |
|
Tier1 |
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. |
|
Tier2 |
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. |
|
Tier3 |
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. |
|
Tier1 range |
Displays the range in tier1. If there is no monitor data in tier1, this item does not appear. |
|
Tier2 range |
Displays the range in tier2. If there is no monitor data in tier2, this item does not appear. |
Capacities, average I/Os, and total I/Os appear if the cursor is placed on the dot of the Tier1, Tier2, Tier3, Pool, or the Pool(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 |
Description |
|---|---|
|
Capacities |
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. |
|
Average I/Os |
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. |
|
Total I/Os |
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. |
When no I/Os are in the lower tier with multiple tiers, the tier range line is placed at 0 on the vertical scale.
For example, if the dot is placed far from the lower limit of the tier range, the lower limit levels of the Tier 1 Range and Tier 2 Range are adjusted to improve the visibility of the performance graph. In this case, the value that is obtained by Command Control Interface may not correspond with the value of the dot displayed in a performance graph.
For V-VOLs
The following table provides the View Tier Properties table information when LDEV information is present.
Tier Properties table when selecting a DP-VOL
|
Item |
Description |
|---|---|
|
LDEV ID |
Displays the combination of the LDKC, CU, and LDEV. |
|
LDEV name |
Displays the LDEV name. |
|
Tiering Policy |
Displays the tiering policy name and identifier. |
|
New Page Assignment Tier |
Displays the new page assigned tier. |
|
Tier Relocation |
Displays whether tier relocation is set to Enabled or Disabled. |
|
Relocation Priority |
Displays the relocation priority. |
|
Tier name |
Displays the tier names: Tier1, Tier2, Tier3, and Total. Each column displays information about the tier. |
|
Drive Type/RPM |
Displays the data drive type and RPM of tier. If multiple types exist in a tier, Mixed is displayed. For an external volume, Drive Type displays External Storage with the value of the external LDEV tier rank. |
|
Pool Capacity |
Displays the total capacity of each tier and total capacity of the pool. |
|
Used Capacity (Used %) |
Displays the percentage of the used capacity for the pool and each tier. The field is updated asynchronously with the Recent Tier Utilization table and when the View Tier Properties window is opened. The Used Capacity of each tier may differ from the Total value. |
Recent Tier Utilization (monitoring period) table
|
Item |
Description |
|---|---|
|
Header area |
If a error occurs, a message appears. |
|
Tier name |
Displays the tier names: Tier1, Tier2, Tier3, and Total. Each column displays information about the tier. |
|
Average Number of I/O (per Hour) |
Displays the average number of I/Os on an hourly basis.* |
|
* This field is updated when performance monitoring information is collected, asynchronously with Used Capacity (Used %). If ? is displayed, take the actions displayed in the header area of the Recent Tier Utilization table. If an error message and countermeasure are not shown in the header area of the Recent Tier Utilization table, refresh the window. If ? continues to display, call the Hitachi Data Systems customer support. |
|
Performance Graph
|
Item |
Description |
|---|---|
|
Performance graph |
Displays the performance graph of the entire pool or tiering policy. |
|
Volume |
If the period mode of the monitoring mode is specified, this item appears. When this check box is selected, the performance graph appears. The vertical scale of 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. |
|
Volume(Weighted average) |
If the continuous mode of the monitoring mode is specified, this item appears. When this check box 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. |
|
Tier1 |
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. |
|
Tier2 |
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. |
|
Tier3 |
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. |
|
Tier1 range |
Displays the range in tier1. If there is no monitor data in tier1, this item does not appear. |
|
Tier2 range |
Displays the range in tier2. If there is no monitor data in tier2, this item does not appear. |
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 |
Description |
|---|---|
|
Capacities |
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. |
|
Average I/Os |
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. |
|
Total I/Os |
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. |
When no I/Os are in the lower tier with multiple tiers, the tier range line is placed at 0 on the vertical scale.