Hitachi Command Suite 8 User Guide

							• If selecting multiple HDT volumes from a logical group, all selected HDTvolumes must belong to the same HDT pool.
• A Tiered Storage Manager license is required to perform operations from the Mobility tab.
Procedure 1. From the tree view in the  Resources tab, select  Storage Systems .
You can also perform this step from the  Mobility tab.
If editing from logical groups, perform this step from the  Mobility tab.
2. Expand the tree and select the target HDT pools.
3. Select one or more HDT volumes from the list of volumes on the  DP Vols
tab, and then click  Edit Tiering Policy .
4. Select the tiering policy, and then execute the task.
You can schedule the task to be executed later.
5. View the list of tasks to make sure that all tasks are complete.
Result
The tiering policy is applied.Tip:  The capacity ratio of Tier 1 might exceed the value specified for the
maximum allocation threshold if a data placement profile and a tiering policy
are being used concurrently.
Related concepts
•
About virtualizing storage tiers  on page 175
Customizing a tiering policy for HDT volumes You can set the value for the allocation threshold of a hardware tier. When a
tiering policy is specified for HDT volumes, make sure changing the definition
will not cause a problem.
Prerequisites
• A Tiered Storage Manager license must be registered to perform this task from the Mobility tab.
• Verify the tiering policy to be changed.
Procedure 1. On the  Resources  tab, expand the  Storage Systems  tree.
Note that you can also update tiering policies on the  Mobility tab.
2. For the applicable storage system, select  DP Pools.
3. On the  Tiering Policies  tab, select a tiering policy to change, and click
Customize Tiering Policy .
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							4.Specify the required items, and then submit the task.
5. After the task is complete, on the  Resources tab, select  DP Pools.
6. On the  Tiering Policies  tab, select the tiering policy you changed to
verify that the can verify the changes.
Result
The tiering policy is updated.
Related concepts
•
About virtualizing storage tiers  on page 175
Notes on data placement profiles for HDT volumes When using data placement profiles for HDT volumes, it is useful to
understand the following:
• Data placement profiles are applied only to pages placed in Tier 1 of HDT pools.
• For pages to which both a data placement profile and tiering policy are set, the settings of the profile are prioritized.
• After a data placement profile has been applied and monitoring and data relocation of HDT pools has been performed, a data placement is restored.Therefore, users need to determine the timing at which to apply a profile
by taking into account the period during which the monitoring and data
relocation are performed.
• When performing a create, update, apply, or release of a data placement profile, or when searching for or repairing an inconsistency in a dataplacement profile, users cannot perform other operations for the target
storage system.
• A task to create, update, apply, or release a data placement profile or to search for or repair an inconsistency in a data placement profile takes time
to complete after it is executed. This time might affect other operations, so make a plan based on the displayed time estimate. Keep in mind that the
larger the number of target volumes, the more likely that the estimated
time and the actual execution time will differ greatly. You can also stop
tasks that are being executed, and then restart them.
• Regardless of the allocated resource groups, data placement profiles created by another user can also referenced in the list of profiles. However,
operation that can be performed on such profiles are restricted based on
the allocated resource group and role.
• If the number of managed data placement profiles exceeds 200, displaying the profile list might take some time. In this case, set the [Rows/page] of
the profile list to no more than 100.
• When the operations listed below are performed, users need to perform a search inconsistency operation from the Refresh Storage Systems dialog
because the profile that is actually applied to the volume in a storage
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							system might not match the profile information that can be referencedfrom Hitachi Command Suite.
â—‹ When the Hitachi Command Suite database was overwritten, due to an
import or restoration, while the applied profile existed.
â—‹ When the storage system that contains an applied profile is deleted, and
the storage system is re-registered.Tip:  If inconsistencies are detected, a message will be displayed in Manage
Data Placement Profiles dialog. From the link shown in the message, perform
the  repair inconsistencies  operation and release the profile. This can
avoid unintended data to be fixed into a high-speed hardware tier by a profile
that was applied in the past.
Related concepts
•
About virtualizing storage tiers  on page 175
Creating a data placement profile for HDT volumes To restore a data replacement appropriate for application processing, theuser creates a data placement profile when HDT volumes provide sufficient
performance. A profile can be created for each logical group, and is managed
with the corresponding logical group.
Prerequisites
• A Tiered Storage Manager license must be registered
• Gather the name of the target logical group • Specify settings for checking performance information, such as settings for linking to Hitachi Tuning Manager, or settings for the performance
monitoring software of each application.
Tip:  If linked to Hitachi Tuning Manager, you can view performance trend
charts for the volumes in the logical group from the  Manage Data
Placement Profiles  dialog box. For details on the linking method, see the
Hitachi Command Suite Administrator Guide .
Procedure
1. From the  Mobility tab, General Tasks  pane, select Manage Data
Placement Profiles .
2. Click the  Logical Group View  button, and specify the necessary items.
Check the performance of the target logical group by using the
performance trend charts or software for checking performance
information, and then click the  Create Profile button.
3. To create a plan, specify the necessary items by following the
instructions in the window.
4. If there is no problem with the plan, execute it.
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							5.View the list of tasks to see the execution results.
Result
The created profile can be checked in the list of profiles displayed by clicking
the Logical Group View button in the Manage Data Placement Profiles dialog box.Tip:  To delete data placement profiles, select the data placement profiles to
be deleted, and click Delete Profiles.Note:  Regardless of the allocated resource groups, data placement profiles
created by another user can also be referenced in the list of profiles.
However, operations that can be performed on such profiles are restricted
based on the allocated resource group and role. Therefore, specify profile
names and descriptions to make it clear which operations are available.
Related concepts
•
About virtualizing storage tiers  on page 175
Updating a data placement profile for HDT volumes You can update an existing data placement profile to reflect the latest HDT
volume data placement in the profile.
Tip:  To change the target HDT volumes of a profile due to changes in the
logical group configuration or other reasons, re-create the profile.
Prerequisites
• Register a Tiered Storage Manager license.
• Determine the name of the target logical group.
• Specify settings for checking performance information, such as settings for linking to Hitachi Tuning Manager, or settings for the performance
monitoring software of each application.
Tip:  If linked to Hitachi Tuning Manager, you can view performance trend
charts for the volumes in the logical group from the  Manage Data
Placement Profiles  dialog box. For details on the linking method, see the
Hitachi Command Suite Administrator Guide .
Procedure
1. From the  Mobility tab, General Tasks  pane, select Manage Data
Placement Profiles .
2. Click the  Logical Group View  button, specify the necessary items.
Check the performance of the target logical group by using the
performance trend charts or software for checking performance
184Provisioning storageHitachi Command Suite User Guide 
						

							information, select the row of the profile to be updated (only one profilecan be selected) from the list of data placement profiles, and then click
the  Update Profile  button.
3. To create a plan, specify the necessary items by following the
instructions in the window.
4. If there is no problem with the plan, execute it.
5. View the list of tasks to see the execution results.
Result
The updated profile information can be viewed from the profile operation history list, which is displayed by clicking the Logical Group View button in
the Manage Data Placement Profiles dialog box.Tip:  When you want to periodically update the profile according to the
intervals for monitoring HDT pools and replacing data, you can set a schedule
for updates by using the Schedule Profiles button. Also, When an applied
profile is updated, the profile in a condition before the update will continue to be used until the updated profile is reapplied.
Related concepts
•
About virtualizing storage tiers  on page 175
Editing a data placement profile for HDT volumes You can change the name and description of an existing data placement
profile.
Prerequisites
A Tiered Storage Manager license must be registered.
Procedure 1. From the  Mobility tab, General Tasks  pane, select Manage Data
Placement Profiles .
2. Click  Overall Profile View  or Logical Group View , select the row of
the profile to be edited from the list of data placement profiles (only one
profile can be selected), and then click  Edit Profile.
3. Edit the necessary items and submit the task.
Result
When the task completes, the data placement profile is updated.
Related concepts
•
About virtualizing storage tiers  on page 175
Provisioning storage185Hitachi Command Suite User Guide 
						

							Applying a data placement profile for HDT volumesBefore beginning application processing, apply a data placement profile to
restore a data placement that fits the characteristics of the processing. After confirming that the data placement is restored and performance is improved,release the applied profile to return to normal HDT operation.Tip:
• To apply or release the profile periodically to match the application operations, click Schedule Profiles to schedule when to apply and releasethe profile. When you apply the profile, you can also specify a release
schedule.
• The capacity ratio of Tier 1 might exceed the value specified for the maximum allocation threshold if a data placement profile and a tiering
policy are being used concurrently.
Prerequisites
• A Tiered Storage Manager license must be registered
• A data placement profile must be created • Gather the name of the target logical group• Specify settings for checking performance information, such as settings for linking to Hitachi Tuning Manager, or settings for the performance
monitoring software of each application
Tip:  If linked to Hitachi Tuning Manager, you can view performance trend
charts for the volumes in the logical group from the  Manage Data
Placement Profiles  dialog box. For details on the linking method, see the
Hitachi Command Suite Administrator Guide .
Procedure
1. On the  Mobility  tab, General Tasks  pane, select Manage Data
Placement Profiles .
2. Click the  Overall Profile View  button, or Logical Group View  button,
to view the creation date, usage, and effect of applying profiles in the
past, and select the row of the profile to be applied (only one profile can
be selected) from the list of data placement profiles, and then click the
Apply Profile  button.
3. To create a plan, specify the necessary items by following the
instructions in the window.
4. If there is no problem with the plan, execute it.
5. View the list of tasks to see the execution results.
After the monitoring and data relocation of HDT pools finish, perform the following operations to check the effect of applying the profile, and to
release the applied profile.
186Provisioning storageHitachi Command Suite User Guide 
						

							6.Using the software for checking the performance information, check the
effects of applying the profiles.
If linked with Hitachi Tuning Manager, from the  Manage Data
Placement Profiles  dialog box, click Logical Group View  to check the
performance trend chart of the target logical group.
7. To return to normal HDT pools operation, click  Release Profile, specify
the necessary items, and then release the applied profile.
Related concepts
•
About virtualizing storage tiers  on page 175
Scheduling data placement profiles for HDT volumes You can set weekly or monthly schedules for applying, releasing, andupdating data placement profiles.
Tip:  If multiple operation schedules are registered for a single logical group,
the task list displays the operation that will be executed first. For example, if
a schedule to apply a profile is set followed by a schedule to release the
profile, then the application task is displayed until the profile is applied. After
the profile is applied, the task to release the profile is displayed.
Prerequisites
• Register a Tiered Storage Manager license.
• Create a data placement profile.
• Identify the name of the target logical group.
Procedure 1. On the  Mobility  tab, select  General Tasks , then select Manage Data
Placement Profiles .
2. Click the  Overall Profile View  button, or Logical Group View  button,
then click the  Schedule Profiles  button.
3. To create a plan, specify the necessary items by following the
instructions in the window.
4. If there is no problem with the plan, submit it.
5. View the list of tasks to make sure that the operation for which a
schedule is set is registered as a task.
Related concepts
•
About virtualizing storage tiers  on page 175
Editing an external LDEV tiering rank for an HDT pool You can edit the external LDEV tiering rank (Low/Medium/High) for a poolvolume.
Provisioning storage187Hitachi Command Suite User Guide 
						

							Prerequisites
• Virtualize sufficient storage.
• Define hardware tiers that consist of external volumes.• Connect the external storage system.
Procedure 1. On the  Resources  tab, select  Storage Systems , and then select the
target  DP Pools .
2. Select the target HDT pool, and click the  DP Pool Vols tab.
3. Select the target HDT pool volume the  DP Pools Vols list, and then click
Edit External LDEV Tier Rank .
4. In the  External LDEV Tier Rank  menu, change the tier ranking (Low/
Middle/High) to a different value.
5. (Optional) Update the task name and provide a description.
6. (Optional) Expand  Schedule to specify the task schedule. You can
schedule the task to run immediately or later, The default setting is  Now.
If scheduled for  Now, select  View task status  to monitor the task after
it is submitted.
7. Click  Submit . If the task is to run immediately, the task begins.
8. You can check the progress and the result of the task on the  Tasks &
Alerts  tab. Click on the task name to view details of the task.
Result
The external LDEV tiering rank for the HDT pool volume has been changed on
the target storage system.
Related concepts
•
About virtualizing storage tiers  on page 175
Allocating and unallocating volumes This module describes volume allocation, provides information about volumeallocation requirements, describes multiple ways in which you can allocate
volumes, and provides related procedures for allocating volumes and editing
volume or host access.
About allocating volumes Volume allocation makes storage capacity available to host applications andfile servers. Hosts and file servers must already be registered before volume
allocation.
Depending on your registered storage systems, volumes can be allocated
using basic volumes, pool volumes, or volumes from a tier. Basic volumes are
volumes from a parity group. Any storage system can provide basic volumes. Allocating DP pool volumes involves grouping resources on storage systems
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							that support this feature. DP pools must exist prior to volume allocation froma DP pool. To allocate volumes from a tier, a Tiered Storage Manager licenseis required, and tier policies must be established for storage systems that
support tier policy configuration.
The following rules and behaviors apply when allocating volumes:• Settings that are assigned when allocating volumes to a host become the default settings for the next time you allocate a volume to the same host.
You can change these settings during volume allocation.
• If a variety of volumes with different characteristics have been allocated to a host, when you allocate a new volume, you can select an existing
volume to set the volume allocation criteria.
• When allocating a volume, if no volumes match the specified requirements, new volumes are created from unused capacity andallocated to the host. When a basic volume is created, the volume is also
formatted at the same time.
• You can use keyword or criteria-based searches to find existing unallocated volumes that meet your requirements.
• When you allocate volumes to a host, LUN paths are assigned automatically.
LUN paths are storage port to host port mappings that provide host access to volumes. The host port is a host bus adapter (HBA), or an iSCSI name.
WWN nicknames can be displayed to confirm target HBAs for a host while
editing LUN paths during, or after, volume allocation.
• Volumes can be allocated on ports where LUN security is not enabled. All hosts with access to the port can access the volume.
• Volume allocation to a clustered host should be done by using logical groups. Using logical groups ensures that the same volumes are allocated
to all hosts in the cluster.
• Volume allocation is not complete until you approve the volume allocation plan and submit the volume allocation task.
• When volumes are allocated to a host OS, you must create a file system on them and mount them, before they can be used by host applications.
• When you are linking with Hitachi NAS Platform v11.3 or later and volumes are allocated for creating or expanding storage pools, it is recommendedthat you allocate volumes using the Create Storage Pool or Expand Storage Pool dialog boxes. Device Manager can automatically specify a
volume and path configuration for allocating volumes that follows the best
practices for configuring storage pools.
• When volumes are allocated to a Hitachi NAS Platform F or Hitachi Data Ingestor, and Hitachi File Services Manager v3.2 is installed, you can
create a file system and allocate the volume by using the Create File
System dialog box.Note:  Before allocating volumes, review the available volume allocation
methods. Understanding the available starting points for volume allocationProvisioning storage189Hitachi Command Suite User Guide 
						

							will enable you to perform volume allocation in a way that best suits your
requirements, and will help you understand the Allocate Volumes dialog box and the Define Clustered-Host Storage dialog box.
Related concepts
•
Allocating storage  on page 133
Related tasks
•
Allocating volumes to selected file servers  on page 194
Related references
•
Prerequisites for allocating volumes  on page 192
•
Notes on performing quick formats  on page 140
•
Volume allocation methods  on page 190
•
Allocate Volumes dialog box  on page 200
•
Workflow for providing NAS Platform file shares  on page 234
•
Notes on setting LUN paths for NAS Platform  on page 239
Volume allocation methods When you allocate volumes, you can use the Allocate Volumes dialog box orthe Define Clustered-Host Storage dialog box.
Begin by selecting resources, such as volumes or hosts, and then click
Allocate Volumes, which opens the Allocate Volumes dialog box.
Click Allocate Volumes without first selecting a resource, such as a volume or
host.
There are multiple methods in which to begin allocating volumes. The visible
fields in the Allocate Volumes dialog box will vary depending on the starting
point and whether you have selected a resource to begin the procedure. For
example, if you select resources first, the Allocate Volumes dialog box will
prompt you for less information.
If you are linking with Hitachi NAS Platform v11.3 or later and allocating volumes to a file server when creating or expanding storage pools, the
following is recommended:
• Use the Create Storage Pool dialog box or the Expand Storage Pool dialog box instead of the Allocate Volumes dialog box to create or expand storage
pools and allocate volumes at the same time.
Device Manager can automatically specify a volume and path configuration for allocating volumes that follows the best practices for configuring storage pools.
When using the Allocate Volumes dialog box, the following conditions apply
when you begin volume allocation using these available methods and starting points:
190Provisioning storageHitachi Command Suite User Guide