Managing tiered storage
Viewing pool tier information
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
In the Pools window, select a pool with the properties you want to view.
Perform one of the following to display the View Tier Properties window.
- Click More Actions and select View Tier Properties.
- Click to open the window.
Select the target pool to display the graph.
Viewing monitor and tier relocation information in HDvM - SN
Hitachi Device Manager - Storage Navigator (HDvM - SN) displays the following information about monitor and tier relocation.
|
Field |
Windows |
Details |
|
Monitoring Status |
|
Displays the status of pool monitoring.
Other than these cases, a hyphen (-) is displayed. |
|
Recent Monitor Data |
|
Displays the latest monitoring data.
|
|
Pool Management Task |
|
Displays the pool management task being performed to the pool.
For details about the relocation progress rate, check the tier relocation log. |
|
Pool Management Task (Status/Progress) |
View Pool Management Status window |
Displays the status of the pool management task being performed, each V-VOL progress ratio in the pool and its average.
For details about the relocation progress rate, check the tier relocation log. |
|
Relocation Result |
|
Displays the status of the tier relocation processing.
|
|
Relocation Speed |
|
Displays the tier relocation speed settings.
|
|
Relocation Priority |
|
Displays the relocation priority.
|
|
Performance Graph |
View Tier Properties window |
The performance graph for the available monitor information is displayed in the View Tier Properties window. |
Viewing monitor and tier relocation information using CCI
To view the monitoring information and tier relocation information, execute the
raidcom get
dp_pool command with the
-key opt option specified. For details, see the
Command Control Interface Command Reference.
The following items are displayed:
-
STS
This item displays the operational status of the performance monitor and the tier relocation.
-
STP: The performance monitor and the tier relocation are stopped.
-
RLC: The performance monitor is stopped. The tier relocation is operating.
-
MON: The performance monitor is operating. The tier relocation is stopped.
-
RLM: The performance monitor and the tier relocation are operating.
-
-
DAT
This item displays the status of the monitor information.
-
VAL: Valid.
-
INV: Invalid.
-
PND: Being calculated.
-
-
R(%)
This item displays the progress percentage of tier relocation.
0 to 99: Shows one of the following statuses.
- When the value of STS is RLC or RLM: Relocation is in progress.
- When the value of STS is STP or MON: Relocation is suspended at the indicated percentage progression.
100: Shows if the relocation operation is not in progress, or the relocation is complete.
Edit Pools window
Use this window to edit the settings of the selected pool.
- If you need to perform two or more operations to edit several items in the same pool, wait until the first task has been applied before performing the next task. If the next task is performed while the first task is being applied, the first task is canceled and the next task is applied to the storage system, so the result might be different from what you expect.
- If you modified pool parameters by using Command Control Interface and then use Device Manager - Storage Navigator, click File > Refresh All to display the latest pool information before performing the next operation by using Device Manager - Storage Navigator. If you use Device Manager - Storage Navigator without refreshing the windows, the information updated by Command Control Interface might not yet be displayed on the Device Manager - Storage Navigator windows, so if you perform an operation the result might be different from what you expect.
|
Item |
Description |
|
Multi-Tier Pool |
Select the check box, then Enable or Disable when using or not using Dynamic Tiering. In Thin Image, you cannot change the setting of this function. For a Dynamic Provisioning pool that contains Thin Image pairs and snapshot data, you cannot change this setting from Disable to Enable. |
| Active Flash |
Select the check box if you are using active flash. If pool volumes whose drive type is SSD are installed, this check box can be selected. In Thin Image, you cannot change the setting of this function. |
|
Options for Multi-Tier Pool |
Specifies the performance monitoring, tier relocation, edit buffer space for new page assignment, and buffer space for tier relocation if Multi-Tier Pool is set to Enable. In Thin Image, you cannot change the setting of this function. Select the Tier Management check box, and then set the tier management, the cycle time, and the monitoring period.
Select the Monitoring Mode check box, and then set the monitoring mode. Monitoring Mode: Specify the monitoring mode. If you perform the tier relocation weighted to the past period monitoring result, select Continuous Mode. If you perform the tier relocation on the specified cycle, select Period Mode. Select the Relocation Speed check box. Then set the tier relocation speed. Relocation Speed: Specify the page relocation speed when tier relocation is performed. You can set the speed to: 1(Slowest), 2(Slower), 3(Standard), 4(Faster), or 5(Fastest). Select the Buffer Space for New page assignment check box, and then set the buffer space for new page assignment. Buffer Space for New page assignment: Enter an integer value from 0 to 50 as the percentage (%) to set for tier 1, tier 2, and tier 3. If there is no tier, you cannot set this item. Select the Buffer Space for Tier relocation check box, and then set the buffer space for tier relocation. Buffer Space for Tier relocation: Enter an integer value from 2 to 40 as the percentage (%) to set for tier 1, tier 2, and tier 3. If the check box is not selected, you cannot set this item. You must set all items if you change the pool setting from Dynamic Provisioning to Dynamic Tieringor active flash. If the check box is selected, you cannot collapse the Options for Multi-Tier Pool field. |
|
Data Direct Mapping |
Select the check box, and then select Enable or Disable for the data direct mapping attribute. This item can be enabled only when the pool type is Dynamic Provisioning and multi-tier pool is disabled. Enable or Disable cannot be selected in the following cases:
|
|
Pool Name |
Select the Pool Name check box, and then enter the pool name.
* When a pool is selected, the pool name appears in the Prefix text box by default. When multiple pools are selected, the initial number from the set number to the maximum number of digits is automatically set. Example:
|
|
Warning Threshold |
Select the check box, and then enter a threshold. The minimum threshold is the sum of the mapped capacity rates, reserved capacity rates, and one percent (1%). The maximum threshold is 100%. For Thin Image, you cannot change the setting of this function: Check Warning Threshold and enter a threshold. You cannot set this item if the result of the following calculation exceeds 95: (used-pool-capacity/pool-capacity) × 100 (%) |
|
Depletion Threshold |
Select the check box, and then enter a threshold. The minimum threshold is the sum of the mapped capacity rates, reserved capacity rates, and one percent (1%). The maximum threshold is 100%. If you change the Thin Image pool, you cannot set this item. |
|
Protect V-VOLs when I/O fails to Blocked Pool VOL |
Select the check box, and then select Yes or No in the protect function for DP-VOL. If this function is enabled, when the pool-VOL is blocked, DP-VOL is protected from reading and writing requests. And at the same instant, the access attribute of the DP-VOL is changed to the Protect attribute. However, if Data Retention Utility is not installed, this check box goes inactive. |
|
Suspend TI pairs when depletion threshold is exceeded |
For a Dynamic Provisioning pool that contains Thin Image pairs and snapshot data, specify whether SIM code 62Exxx is output when the pool used capacity exceeds the depletion threshold. If you attempt to split a Thin Image pair in the pool after SIM code 62Exxx is output, the operation fails and the pair is suspended by error.
|
|
Protect V-VOLs when I/O fails to Full Pool |
Select the check box, and then select Yes or No in the protect function for DP-VOL. If this function is enabled, when the pool usage reaches the full size, DP-VOL is protected from reading and writing requests. And at the same instant, the access attribute of the DP-VOL is changed to the Protect attribute. However, if Data Retention Utility is not installed, this check box goes inactive. |
Enabling active flash on an existing Dynamic Tiering pool
Use this procedure to enable the active flash feature on a Dynamic Tiering pool.
- The pool contains DP-VOLs for which capacity saving is enabled.
- The pool contains a deduplication system data volume.
Before you begin
- The Storage Administrator (Provisioning) role is required to perform this task.
- Pool volumes whose drive type is SSD must be installed.
- If tier relocation is set to Manual mode, you must change tier relocation to Auto before beginning this procedure.
- If pool-VOLs are being deleted, you must wait until the delete pool-VOL operations are complete before beginning this procedure.
- If zero pages are being reclaimed, you must wait until the reclaim zero page operations are complete before beginning this procedure.
Procedure
In the Storage Systems tree on the left pane of the main window, select Pools.
From the Pools table, select the pool you want to change, and click More Actions > Edit Pools.
Check Active Flash to ON.
If there is no pool volume whose drive type is SSD, the check box cannot be selected.
Click Finish.
The Confirm window appears.In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. The value "date-window name" is entered by default.
In the Confirm window, click Apply to register the setting in the task. If the Go to tasks window for status check box is selected, the Tasks window appears.
Changing monitoring and tier relocation settings
You can change the following monitoring and tier relocation settings of Dynamic Tiering pools:
- Automatic or manual execution of monitoring and tier relocation
- Cycle time of monitoring and tier relocation
- Time period of monitoring
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
From the Pools table, click the row of a pool you want to change.
Perform one of the following to display the Edit Pools window.
- Click More Actions and select Edit Pools. - Click Actions > Pool > Edit Pools to open the window.Select the Tier Management check box.
In Tier Management, select Auto or Manual.
Normally Auto should be set to allow relocation to be automatically executed.
When you select Manual, monitoring and tier relocation can be executed with the Command Control Interface commands or from the Pools window.
When you change the setting from Auto to Manual during performance monitoring and tier relocation is executing, the operation is cancelled and is no longer performed.
If Auto is selected from the Cycle Time list, select the cycle of performance monitoring and tier relocation.
Click Finish.
The Confirm window appears.In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. The value "date-window name" is entered by default.In the Confirm window, click Apply to register the setting in the task.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Changing monitoring mode settings
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
From the Pools table, click the row of a pool for which you want to change.
Perform one of the following to display the Edit Pools window.
- Click More Actions and select Edit Pools. - Click Actions > Pool > Edit Pools to open the window.Click the Monitoring Mode check box.
Select Period Mode or Continuous Mode.
If you want to perform tier relocation using the monitor results from the prior cycle, select Period Mode. If you want to perform tier relocation weighted to the past period monitoring result, select Continuous Mode.Click Finish.
The Confirm window appears.In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. The value "date-window name" is entered by default.In the Confirm window, click Apply to register the setting in the task.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Starting tier relocation manually
Use this procedure to start tier relocation manually.
Before you begin
The Storage Administrator (Provisioning) role is required to perform this task.
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
On the Pools tab, click the row of a pool you want to start monitoring.
Click More Actions and select Start Tier Relocation.
In the Task Name text box of the Start Tier Relocation window, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. "date-window name" is entered by default.In the Start Tier Relocation window, click Apply to register the setting in the task.
If Go to tasks window for status is selected, the Tasks window opens.
Stopping tier relocation manually
Use this procedure to stop tier relocation manually.
Before you begin
The Storage Administrator (Provisioning) role is required to perform this task.
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
From the Pools, click the row of a pool you want to start monitoring.
Click More Actions to select Stop Tier Relocation.
The Stop Tier Relocation window appears.In the Task Name text box of the Stop Tier Relocation window, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. "date-window name" is entered by default.In the Stop Tier Relocation window, click Apply to register the setting in the task.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Changing relocation speed
Use this procedure to change the relocation speed.
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
In the Pools table, click the row of a pool you want to change.
Perform one of the following to display the Edit Pools window.
- Click More Actions and select Edit Pools. - Click Actions > Pool > Edit Pools to open the window.Set the Relocation Speed check box to ON.
Use the Relocation Speed option to set the speed for page relocation to 1(Slowest), 2(Slower), 3(Standard), 4(Faster), and 5(Fastest).
The default is 3(Standard). If you want to perform tier relocation at high speed, set 5(Fastest). If the speed specified is slower than 3(Standard), the data drive load is low when tier relocation is performed.Click Finish.
The Confirm window appears.In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. The value "date-window name" is entered by default.In the Confirm window, click Apply to register the setting in the task.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Changing buffer space for new page assignment setting
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
In the Pools table, click the row of a pool you want to change.
Perform one of the following to display the Edit Pools window.
- Click More Actions and select Edit Pools. - Click Actions > Pool > Edit Pools to open the window.Select the Buffer Space for New page assignment check box.
In the Buffer Space for New page assignment text box, enter an integer value from 0 to 50 as the percentage (%) to set for each tier.
Click Finish.
The Confirm window appears.In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. The value "date-window name" is entered by default.In the Confirm window, click Apply to register the setting in the task.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Changing buffer space for tier relocation setting
Use this procedure to change the buffer space for tier relocation.
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
In the DP Pools table, click the row of a pool you want to change.
Perform one of the following to display the Edit Pools window.
- Click More Actions and select Edit Pools. - Click Actions > Pool > Edit Pools to open the window.Select the Buffer Space for Tier relocation check box.
In the Buffer Space for Tier relocation text box, enter an integer value from 2 to 40 as the percentage (%) to set for each tier.
Click Finish.
The Confirm window appears.In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. The value "date-window name" is entered by default.In the Confirm window, click Apply to register the setting in the task.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Changing an allocation threshold
Use this procedure to change an allocation threshold.
From Level6(6) to Level31(31), allocation thresholds can be changed. However, for tiering policies from All(0) to Level5(5), allocation thresholds cannot be changed.
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
In the Pools window, click Edit Tiering Policies.
In the Edit Tiering Policies window, select the tiering policy that you want to change and click Change. The Change Tiering Policy window appears.
Select the Allocation Threshold checkbox.
Change thresholds, and click OK.
Return to the Edit Tiering Policies window.
Each allocation threshold value is needed in order to meet the conditions described in the following table.Click Finish.
The Confirm window appears.In the Task Name text box, type a unique name for the task or accept the default.
You can enter up to 32 ASCII characters and symbols, with the exception of: \ / : , ; * ? " < > |. The value "date-window name" is entered by default.Click Apply.
If the Go to tasks window for status check box is selected, the Tasks window appears.Item
Explanation
Tier1 Max
Satisfy either one of following:
Equal to Tier1 Min
Bigger than Tier1 Min
Tier1 Min*
Satisfy either one of following:
Equal to Tier1 Max
Smaller than Tier1 Max
Tier3 Max
Satisfy either one of following:
Equal to Tier3 Min
Bigger than Tier3 Min
Tier3 Min*
SSD
Satisfy either one of following:
Equal to Tier3 Max
Smaller than Tier3 Max
* The sum of Tier1 Min and Tier3 Min must be 100 (%) or less.
Changing the tiering policy level of a DP-VOL
Use this procedure to change the tiering policy level of a DP-VOL.
- Deduplication system data volume
- DP-VOLs with capacity saving enabled
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Logical Devices.
In the LDEVs pane of the Logical Devices window, select the LDEV ID of the LDEV with the tiering policy you want to change.
Click Edit LDEVs.
In the Edit LDEVs window, click Tiering Policy, and then select a tiering policy.
Click Finish.
The Confirm window appears.In the Task Name text box, type a unique name for the task or accept the default.
You can enter up to 32 ASCII characters and symbols, with the exception of: \ / : , ; * ? " < > |. The value "date-window name" is entered by default.Click Apply.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Changing the tier rank of an external pool-VOL
Use this procedure to change the tier rank of an external pool-VOL.
Before you begin
The Storage Administrator (Provisioning) role is required to perform this task.
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Expand Pools, and then select the pool that contains the external pool-VOL whose tier rank you want to change.
In the Pool volumes table, select the external pool-VOL whose tier rank you want to change.
External pool-VOLs are indicated by External Volume in the Drive Type/RPM column.Click .
In the Edit External LDEV Tier Rank, select the external pool-VOL.
Click Change, and then select the desired tier rank (High, Middle, or Low).
Click Finish.
The Confirm window appears.In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. "date-window name" is entered by default.Click Apply to register the setting in the task.
If Go to tasks window for status is selected, the Tasks window opens.
Changing relocation priority setting of a V-VOL
Use this procedure to change the relocation priority setting of a V-VOL.
- Deduplication system data volume
- DP-VOL with Compression or Deduplication and Compression enabled
Before you begin
The Storage Administrator (Provisioning) role is required to perform this task.
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Logical Devices.
In the Logical Devices window, select the LDEV ID of the volume with the relocation priority you want to change.
Click Edit LDEVs.
In the Edit LDEVs window, select the Relocation Priority and click Default or Prioritize.
If you choose Prioritize, the LDEV is relocated preferentially.Click Finish.
The Confirm window appears.In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols, with the exception of: \ / : , ; * ? " < > |. The value "date-window name" is entered by default.Click Apply.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Changing new page assignment tier of a V-VOL
Use this procedure to change the new page assignment tier of a V-VOL.
- Deduplication system data volume
- DP-VOL with Compression or Deduplication and Compression enabled
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Logical Devices.
In the LDEVs pane of the Logical Devices window, select an LDEV ID.
Click More Actions, and then select Edit LDEVs.
In the Edit LDEVs window, select New Page Assignment Tier, and select the new page assignment tier you want to use.
Click Finish.
The Confirm window appears.In the Task Name text box, type a unique name for the task or accept the default.
You can enter up to 32 ASCII characters and symbols, with the exception of: \ / : , ; * ? " < > |. The value "date-window name" is entered by default.Click Apply.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Changing a tiering policy name
Use this procedure to change a tiering policy name.
From Level6(6) to Level31(31), the names of tiering policies can be changed. However, for tiering policies from All(0) to Level5(5), names cannot be changed.
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
In the Pools window, click Edit Tiering Policies.
In the Edit Tiering Policies window, select the tiering policy that you want to change, and then click Change.
The Change Tiering Policy window appears. Policies with ID 0 to 5 cannot be changed.Select the Change Tiering Policy check box.
Enter the name of the tiering policy.
You can enter up to 32 alphanumeric characters.Click OK.
Return to the Edit Tiering Policies window. Each tiering policy value needs to meet the conditions described in the following table.
Click Finish.
The Confirm window appears.In the Task Name text box, type a unique name for the task or accept the default.
You can enter up to 32 ASCII characters and symbols, with the exception of: \ / : , ; * ? " < > |. The value "date-window name" is entered by default.Click Apply.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Deleting a tier in a pool
You must delete all the pool-VOLs in the tier to be deleted. When pool-VOLs in the tier are empty, the appropriate tier is deleted.
If you delete a pool, its pool-VOLs (LDEVs) will be blocked. If they are blocked, format them before using them.
You cannot delete the pool-VOL when:
- Creating the pool.
- Deleting the pool.
- Increasing the pool capacity.
- Decreasing the pool capacity.
- Restoring the pool.
- Stopping decreasing the pool capacity.
- Changing the threshold.
- Initializing the pool capacity.
- Changing the external LDEV tier rank.
Notes on deleting a tier in a pool
You cannot delete a pool-VOL under these conditions.
- The used capacity of the pool-VOL would exceed the pool threshold if the pool-VOL were deleted.
- The pool-VOL with system area has less than 4.2 GB of free space. There must be 4.2 GB of free space in the pool in order to delete the pool-VOL with system area.
Deleting the pool-VOL stops the tier relocation. The process resumes after the pool-VOL is deleted.
Before you begin
The Storage Administrator (Provisioning) role is required to perform this task.
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
Select the pool that contains the pool-VOLs to be deleted.
Select the Pool volumes tab and select all the pool-VOLs contained in the tier to be deleted.
You cannot delete a pool-VOL unless Shrinkable has been applied.Click Shrink Pool.
In the Shrink Pool window, verify the changes.
The details of Before Shrinking and After Shrinking, including the pool capacity, the used pool capacity and the free pool capacity, appears in Prediction of Shrinking.Click Finish.
The Confirm window appears.In the Task Name text box, type a unique name for the task or accept the default.
You can enter up to 32 ASCII characters and symbols, with the exception of: \ / : , ; * ? " < > |. The value "date-window name" is entered by default.Click Apply.
If the Go to tasks window for status check box is selected, the Tasks window appears.
Downloading the tier relocation log file
Use this procedure to download the log file that contains the results of past tier relocations. For information about the contents of the log file, see Tier relocation log file contents.
Before you begin
Procedure
From the Actions menu, select .
In the dialog box, specify a folder for the log file, and then click Save.
If you change the file name from the default, make sure the file name is appended with the.tsvextension before saving the file.
Tier relocation log file contents
In every cycle in which tier relocation is performed, information about each pool and V-VOL is exported to the tier relocation log. The time required to incorporate the latest tier relocation results may be approximately 30 minutes. The tier relocation log file is tab-delimited and contains the following information.
|
Item |
Does each pool output the log information? |
Does each V-VOL output the log information? |
Type of information |
Description |
|
Cycle ID |
Yes |
Yes |
Common |
ID of each cycle of a tier relocation. A common ID is allocated to pool logs and V-VOL logs that are collected in one cycle. |
|
Log Format Version |
Yes |
Yes |
Common |
Version number of the tier relocation log format. |
|
DKC Serial Number |
Yes |
Yes |
Common |
Serial number of the storage system. |
|
Log Type |
Yes |
Yes |
Common |
Following log types are displayed. POOL: Log information of each pool. V-VOL: Log information of each V-VOL. |
|
LDEV ID |
No |
Yes |
Common |
LDEV ID of a V-VOL exported to a log. |
|
Pool ID |
Yes |
Yes |
Common |
Pool ID of a pool exported to a log. |
|
Num of V-VOLs |
Yes |
No |
Common |
The number of V-VOLs to be processed when tier relocation is performed. |
|
Tiering Policy |
No |
Yes |
Tier relocation result |
Value of the tiering policy. Values from All(0) to Level31(31) can be displayed. From Level6(6) to Level31(31), the names of tiering policies can be changed. If these names have changed, the new names appear. |
|
Tier1 Total |
Yes |
No |
Capacity information |
Total pages of tier 1. |
|
Tier2 Total |
Yes |
No |
Capacity information |
Total pages of tier 2. |
|
Tier3 Total |
Yes |
No |
Capacity information |
Total pages of tier 3. |
|
Tier1 Used |
Yes |
Yes |
Capacity information |
Pages assigned to tier 1 at the start of tier relocation. |
|
Tier2 Used |
Yes |
Yes |
Capacity information |
Pages assigned to tier 2 at the start of tier relocation. |
|
Tier3 Used |
Yes |
Yes |
Capacity information |
Pages assigned to tier 3 at the start of tier relocation. |
|
Start Relocation Date |
Yes |
Yes1 |
Common |
Starting date of the tier relocation. |
|
Start Relocation Time |
Yes |
Yes1 |
Common |
Starting time of the tier relocation. |
|
End Relocation Date |
Yes |
Yes1 |
Common |
Ending date of the tier relocation. |
|
End Relocation Time |
Yes |
Yes1 |
Common |
Ending time of the tier relocation. |
|
Result Status |
Yes |
Yes1 |
Tier relocation result |
Statuses of a tier relocation. Normal End: Tier relocation and optimization ended normally. Normal End (Optimization remains): Tier relocation ended normally, but tier optimization terminated in the middle of processing.2 Suspend: Tier relocation suspended. |
|
Detail Status |
Yes |
Yes1 |
Tier relocation result |
If the Result Status is Suspend, one of following reasons is displayed. Monitor discarded: Suspended due to the discard of monitoring data.3 End of cycle: Suspended due to incomplete tier relocation during a monitoring cycle. Requested by user: Suspended due to request by a user2. Threshold exceeded: Suspended because the used capacity of pools reaches a threshold due to a tier relocation. When the used capacity of a pool reaches the depletion threshold, this reason is logged. FMD threshold exceeded: Suspended because the used capacity of the physical capacity in the accelerated compression-enabled FMD parity group pool reached its full capacity. Cache blocked: Suspended because a cache memory is blocked. Volume blocked: Suspended because an LDEV which is pool-VOL or V-VOL is blocked. The tier management changed (Auto/Manual): Suspended because the tier management mode is changed from Auto to Manual, or Manual to Auto. Other reasons: Suspended for reasons other than the above, such as:
|
|
Completed Rate (%) |
Yes |
Yes |
Tier relocation result |
Progress percentage rate at the time tier relocation ends or is suspended. |
|
Remediation Rate (%) |
Yes |
Yes |
Tier relocation result |
IOPH (I/O per hour) remediation rate at the time tier relocation ends or is suspended. The remediation rate = ((Total IOPH of pages after the promotion1) / (Total IOPH of all pages to be performed of promotion1)) * 100 1: Promotion is the page migration from a lower to higher tier. |
|
Planned Tier1->Tier2 |
Yes |
Yes |
Tier relocation |
Number of pages that are planned to move from the tier 1 to tier 2. |
|
Planned Tier1->Tier3 |
Yes |
Yes |
Tier relocation |
Number of pages that are planned to move from the tier 1 to tier 3. |
|
Planned Tier2->Tier1 |
Yes |
Yes |
Tier relocation |
Number of pages that are planned to move from the tier 2 to tier 1. |
|
Planned Tier2->Tier3 |
Yes |
Yes |
Tier relocation |
Number of pages that are planned to move from the tier 2 to tier 3. |
|
Planned Tier3->Tier1 |
Yes |
Yes |
Tier relocation |
Number of pages that are planned to move from the tier 3 to tier 1. |
|
Planned Tier3->Tier2 |
Yes |
Yes |
Tier relocation |
Number of pages that are planned to move from the tier 3 to tier 2. |
|
Moved Tier1->Tier2 |
Yes |
Yes |
Tier relocation |
Number of pages that are moved from the tier 1 to tier 2. |
|
Moved Tier1->Tier3 |
Yes |
Yes |
Tier relocation |
Number of pages that are moved from the tier 1 to tier 3. |
|
Moved Tier2->Tier1 |
Yes |
Yes |
Tier relocation |
Number of pages that are moved from the tier 2 to tier 1. |
|
Moved Tier2->Tier3 |
Yes |
Yes |
Tier relocation |
Number of pages that are moved from the tier 2 to tier 3. |
|
Moved Tier3->Tier1 |
Yes |
Yes |
Tier relocation |
Number of pages that are moved from the tier 3 to tier 1. |
|
Moved Tier3->Tier2 |
Yes |
Yes |
Tier relocation |
Number of pages that are moved from the tier 3 to tier 2. |
|
IOPH |
Yes |
Yes |
Monitoring result |
IOPHs of all pools or V-VOLs. |
|
IOPH Tier1 (%) |
Yes |
Yes |
Monitoring result |
Percentage of IOPH for tier 1. |
|
IOPH Tier2 (%) |
Yes |
Yes |
Monitoring result |
Percentage of IOPH for tier 2. |
|
IOPH Tier3 (%) |
Yes |
Yes |
Monitoring result |
Percentage of IOPH for tier 3. |
|
Performance Util Tier1 (%) |
Yes |
No |
Monitoring result |
Performance utilization of tier 1. The performance utilization is the current I/O percentage based on the maximum performance of tier 1. |
|
Performance Util Tier2 (%) |
Yes |
No |
Monitoring result |
Performance utilization of tier 2. The performance utilization is the current I/O percentage based on the maximum performance of tier 2. |
|
Performance Util Tier3 (%) |
Yes |
No |
Monitoring result |
Performance utilization of tier 3. The performance utilization is the current I/O percentage based on the maximum performance of tier 3. |
|
Tier1 Low Range |
No |
Yes |
Monitoring result |
Lower limit in a range for tier 1. |
|
Tier2 High Range |
No |
Yes |
Monitoring result |
Higher limit in a range for tier 2. |
|
Tier2 Low Range |
No |
Yes |
Monitoring result |
Lower limit in a range for tier 2. |
|
Tier3 High Range |
No |
Yes |
Monitoring result |
Higher limit in a range for tier 3. |
|
Reclaim Zero Page Num |
Yes |
Yes |
Tier relocation |
Number of pages processed in an operation to reclaim zero pages. |
|
Non Compliant Tiering Policy Number |
Yes |
No |
Monitoring result |
Number of a tiering policy that does not conform to the current tier configuration. A non-compliant policy prevents tier relocation. |
|
Realtime Moved Tier2->Tier1 (Unplanned) |
Yes |
Yes |
Tier relocation |
Number of pages moved from tier 2 to tier 1 by active flash while performing the tier relocation by Dynamic Tiering. However, the pages migration is not planned by Dynamic Tiering. |
|
Realtime Moved Tier3->Tier1 (Unplanned) |
Yes |
Yes |
Tier relocation |
Number of pages moved from tier 3 to tier 1 by active flash while performing the tier relocation by Dynamic Tiering. However, the pages migration is not planned by Dynamic Tiering. |
|
Realtime Moved Tier2->Tier1 (Planned) |
Yes |
Yes |
Tier relocation |
Number of pages moved from tier 2 to tier 1 by active flash while performing the tier relocation by Dynamic Tiering. The pages migration is planned by Dynamic Tiering. |
|
Realtime Moved Tier3->Tier1 (Planned) |
Yes |
Yes |
Tier relocation |
Number of pages moved from tier 3 to tier 1 by active flash while performing the tier relocation by Dynamic Tiering. The pages migration is planned by Dynamic Tiering. |
|
Realtime Moved Tier1->Tier2 |
Yes |
Yes |
Tier relocation |
Number of pages moved from tier 1 to tier 2 by active flash while performing the tier relocation for Dynamic Tiering. |
|
Realtime Moved Tier1->Tier3 |
Yes |
Yes |
Tier relocation |
Number of pages moved from tier 1 to tier 3 by active flash while performing the tier relocation for Dynamic Tiering. |
|
Realtime Moved Tier2->Tier1 (Non Compliant) |
Yes |
Yes |
Tier relocation |
In the total pages moved from tier 2 to tier 1 by active flash, the number of migrated pages that do not conform to the plan of Dynamic Tiering page migration. |
|
Realtime Moved Tier3->Tier1 (Non Compliant) |
Yes |
Yes |
Tier relocation |
In the total pages moved from tier 3 to tier 1 by active flash, the number of migrated pages that do not conform to the plan of Dynamic Tiering page migration. |
|
Realtime Moved Tier1->Tier2 (Non Compliant) |
Yes |
Yes |
Tier relocation |
In the total pages moved from tier 1 to tier 2 by active flash, the number of migrated pages that do not conform to the plan of Dynamic Tiering page migration. |
|
Realtime Moved Tier1->Tier3 (Non Compliant) |
Yes |
Yes |
Tier relocation |
In the total pages moved from tier 1 to tier 3 by active flash, the number of migrated pages that do not conform to the plan of Dynamic Tiering page migration. |
|
Notes
| ||||
Changing a Dynamic Tiering or active flash pool to a pool for Dynamic Provisioning
You can use this procedure to change a Dynamic Tiering or active flash pool to a Dynamic Provisioning pool.
- Tier relocation is being executed manually.
- Pool-VOLs are being deleted.
- Zero pages are being reclaimed.
Before you begin
Procedure
Click Storage Systems, and then expand the Storage Systems tree.
Click Pools.
In the Pools tab, select a pool to be changed.
Perform one of following to display the Edit Pools window.
Click More Actions and select Edit Pools.
Click Actions > Pool > Edit Pools to open the window.
In the Edit Pools window, check Multi-Tier Pool.
Select Disable and click OK in the warning message.
Click Finish.
The Confirm window appears.In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |. The value "date-window name" is entered by default.In the Confirm window, click Apply to register the setting in the task.
If the Go to tasks window for status check box is selected, the Tasks window appears.