Hitachi Command Suite 8 User Guide

							Prerequisites
• Identify the storage system
• Identify the number of volumes to create
• Identify volume types and capacities
Procedure 1. On the  Resources  tab you can create volumes from several locations:
• From  General Tasks , select Create Volumes .
• Select the storage system, click  Actions, and select  Create
Volumes .
• Select the storage system, list existing parity groups, and click  Create
Volumes .
• Select the storage system, list existing DP pools, and click the  Create
Volumes  button or select  Create Volumes  from Actions .
2. In the create volumes dialog box, configure volumes and their
characteristics.
3. Click  Show Plan  and confirm that the information in the plan summary
is correct. If changes are required, click  Back.
4. (Optional) Update the task name and provide a description.
5. (Optional) Expand  Schedule to specify the task schedule.
You can schedule the task to run immediately or later. The default setting
is  Now . If the task is scheduled to run immediately, you can select  View
task status  to monitor the task after it is submitted.
6. Click  Submit.
If the task is scheduled to run immediately, the process begins.
7. (Optional) Check the progress and result of the task on the  Tasks &
Alerts  tab. Click the task name to view details of the task.
Result
Created volumes are added to the target storage system Open-Unallocated volume list.
Related concepts
•
About creating volumes  on page 139
Related references •
Notes on performing quick formats  on page 140
•
Create Volumes dialog box  on page 141
Create Volumes dialog box Newly created volumes are placed in the Open-Unallocated folder of the userselected storage system until they can be allocated to hosts as needed.
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							When you enter the minimum required information in this dialog box, the
Show Plan button activates to allow you to review the plan. Click the Back button to modify the plan to meet your requirements.
The following table describes the dialog box fields, subfields, and field groups. A  field group  is a collection of fields that are related to a specific
action or configuration. You can minimize and expand field groups by clicking
the double-arrow symbol (>>).
As you enter information in a dialog box, if the information is incorrect, errors
that include a description of the problem appear at the top of the box.
Table 5-2  Create volumes dialog boxFieldSubfieldDescriptionNo. of Volumes-Manually enter the number of volumes to create, or use the
arrows (click, or click and hold) to increment or decrement
the volume count.Volume Capacity-This number (in blocks, MB, GB, or TB) is the capacity to
allocate for each volume.
The total capacity to be allocated is calculated as No. of
Volumes * Volume Capacity and is displayed.Storage System-This field will either display the selected storage system
name, or prompt the user to select the storage system from
a list.Volume Type-Select the volume type to create. For example Basic
Volume, Dynamic Provisioning or Dynamic Tiering. The displayed volume types are determined by your selected
storage system. If you do not see an expected volume type,
check that you have selected the correct storage system.Internal/External-When volume type is Basic Volume, or Dynamic
Provisioning, volumes can be created using available
capacity from the selected storage system (internal) or from
an external storage system physically connected to the
selected storage system (external).Pool-When volume type is Dynamic Tiering, volumes can be
created using Select Pool.>> Advanced
OptionsVolume SelectionThis is displayed if a storage system was selected and the
volume type is Basic. Specify whether to use parity groups or free space to create a volume. This is only displayed
when using Virtual Storage Platform G1000, Virtual Storage
Platform, or Unified Storage VM.Drive TypeIf multiple drive types are displayed, you can designate a
specific drive type.Drive Speed
(RPM)If multiple drive speeds are displayed, you can designate a
specific drive speed, or accept the default of any available
speed.Chip TypeIf multiple chip types are displayed, you can designate a
specific chip type.142Provisioning storageHitachi Command Suite User Guide 
						

							FieldSubfieldDescriptionRAID LevelIf multiple RAID levels are displayed, you can designate aspecific RAID level, or accept the default of any available
RAID level.Select Free SpaceAfter selecting a storage system, specifying Basic for the
volume type, and Free Space with volume selection, you
can specify free space for parity groups when creating
volumes.Parity GroupWhen volume type is Basic Volume, based on drive type,
drive speed, chip type, and RAID level selections an
appropriate parity group is selected and displayed for you. You can also manually select a parity group by clicking
Select Parity Group. In the displayed list of parity groups,
you can use sort and filter features on columns such as
RAID level, or unallocated capacity (or other fields) to
identify the preferred parity groups.PoolWhen volume type is Dynamic Provisioning, volumes can be
created using Select Pool. The listed pools can vary depending on drive type, drive speed, chip type, and RAIDlevel selections.Tiering Policy
SettingDisplays only if Dynamic Tiering is selected as the volume
type, and an HDT pool has been selected with Select Pool
(see previous Volume Selection section). You can select a
specific tier policy for the volume to be allocated, or select
All.New Page
Assignment TierFor VSP G1000, VSP and HUS VM, selecting this option
specifies to which hardware tier the new page of an HDT
volume is to be assigned with a specified priority. Within the
hardware tiers for which the tiering policy is set, specify High  for an upper-level hardware tier,  Middle for a medium-
level hardware tier, and  Low for a low-level hardware tier.Relocation PriorityFor VSP G1000, VSP and HUS VM, selecting this option
specifies whether you want to prioritize the relocation of the
data in HDT volumes.LabelVolume labels are searchable, and therefore recommended
as a way to find volumes. The Initial value is not required,
but can be useful for differentiation when creating multiple
volumes. Reflect a label to the storage system is checked by default so that naming is consistent between HCS and the
storage system itself.LDEV IDAn LDEV ID can be assigned automatically or manually.Format TypeYou can request a quick format, or a basic format.
Note that during a quick format, the load might become
concentrated on some components, lowering the I/O
performance of all hosts that are running in the target
storage system.
Related concepts
•
About creating volumes  on page 139
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							Related tasks
•
Creating volumes  on page 140
Related references •
Notes on performing quick formats  on page 140
About shredding volume data Before deleting a volume that you no longer need, completely remove the
data from the volume to avoid unauthorized use of information. The data can be removed by shredding or reformatting the volume.
Volume data is shredded by overwriting it repeatedly with dummy data,
which securely destroys the original data. Some volumes, such as basic
volumes and DP volumes that are allocated to hosts or used for replication, cannot be shredded.
Caution:  You cannot restore data after it is shredded.
Some storage systems do not support the shredding functionality. For those
storage systems, delete volume information by reformatting the volumes.
Related tasks
•
Shredding volume data  on page 144
Shredding volume data Specify one or more volumes that are not allocated to a host and shred the
data on the volumes.
Prerequisites
• Identify the storage system name that includes the volumes that you want to shred
• Identify the volumes to be shredded
• Unallocate the volumes to be shredded from the host
Caution:  You cannot restore shredded data.
Procedure
1. On the  Resources  tab, select  Storage Systems .
2. Expand the Storage Systems tree, select a storage system, and from the
volumes list, select the volumes whose data you want to shred.
3. Click  Shred Volumes .
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							Note: Shred during off hours, such as overnight, so that the shredding
process does not adversely affect system performance. To verify the
standard required times for shredding, see the  Hitachi Volume Shredder
User Guide .
4.In the  Shred Volumes  dialog box, check the target volume to be
shredded and edit the writing data pattern, if needed.
If the storage system does not support shredding, the data will be
formatted.
5. (Optional) Update the task name and provide a description.
6. (Optional) Expand  Schedule to specify the task schedule. You can
specify the task to run immediately or later. The default setting is  Now.
If the task is scheduled to run immediately, you can select  View task
status  to monitor the task after it is submitted.
7. Click  Submit . If the task is scheduled to run immediately, the process
begins.
8. You can check the progress and result of the task on the  Tasks & Alerts
tab. Click the task name to view details of the task.
Result
When the task completes, the data is shredded or reformatted from the
volume.
Related concepts
•
About shredding volume data  on page 144
Related tasks
•
Deleting unallocated volumes  on page 146
•
Unallocating volumes from file servers  on page 215
•
Unallocating volumes from hosts  on page 214
About deleting unallocated volumes Volumes that are not allocated to any host can be deleted and their space
added to the unused capacity of DP pools or parity groups. To completely and securely remove the data, shred the volume data before deleting the volume.
Related concepts
•
About creating volumes  on page 139
•
About removing hosts and releasing associated resources  on page 73
•
About releasing a LUSE volume  on page 148
Related tasks
•
Deleting unallocated volumes  on page 146
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							Deleting unallocated volumesYou can delete unallocated volumes from a registered storage system.
Prerequisites
• Identify the target storage system
• Identify the target volumes
• Shred volume data, if needed • Unallocate volumes
Procedure 1. On the  Resources  tab, select the target storage system.
2. Expand the tree and select the storage system from which you want to
delete volumes.
3. Select  Open-Unallocated  or DP Pools  and then select the  DP Vols tab
of the target DP pool.
4. From the volume list, select the volumes that you want to delete, and
then click  Delete Volumes .
5. Specify additional information, as appropriate:
• Verify the information that is displayed.
• Enter a name in  Task Name.
• Specify when to execute the task.
6. Click  Submit , and confirm task completion.
Result
When the task completes, deleted volumes no longer appear in the Open-
Unallocated or DP volume list.
Related concepts •
About deleting unallocated volumes  on page 145
Related tasks
•
Shredding volume data  on page 144
•
Unallocating volumes from file servers  on page 215
•
Unallocating volumes from hosts  on page 214
About creating a LUSE volume The functionality to create LUSE volumes is supported by mid-range and
enterprise storage systems. However, mid-range storage systems do not
ensure data integrity when creating LUSE volumes. Therefore, host
administrators must back up data to a server or other location beforehand.
A LUSE volume is collection of two or more basic volumes that have been
grouped together to increase available capacity.
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							If the capacity of the LUSE volumes or basic volumes that have already been
allocated to hosts becomes insufficient, you can increase capacity by adding unallocated volumes or creating LUSE volumes.
LUSE volumes are created by using volumes that belong to the same
resource group, have the same drive type, and are at the same RAID level.
When using FMD/SSD flash drives in a Virtual Storage Platform or HUS VM
storage system, you can still create a LUSE volume even if the drive types
are different.
Note:  For Virtual Storage Platform G1000, you can not create LUSE volumes.
Related tasks
•
Creating a LUSE volume  on page 147
Creating a LUSE volume LUN size expansion (LUSE) volumes are created by aggregating volumes intoa larger logical volume.
Prerequisites
• Gather the name of the target host
• Identify the target volumes (LUSE volumes or basic volumes that are already allocated to the host).
• Back up the target volume (for mid-range storage systems this includes HUS 100, Hitachi AMS 2000, Hitachi SMS, and Hitachi AMS/WMS). Beforecreating LUSE volumes in mid-range storage systems, such as the AMS
series, host administrators must back up data to a server or other location. This is because data might be corrupted when LUSE volumes are created.
• Create volumes to be added
Procedure 1. On the  Resources  tab, select  Hosts.
2. Expand the tree and select the target OS.
3. Select the target host from the list of hosts, and from the displayed list
of volumes, select the LUSE volume or basic volume, and then click
Create LUSE Volume .
4. Click  Add Volumes  and select volumes to be added.
5. Click  Show Plan  and confirm that the information in the plan summary
is correct. If changes are required, click  Back.
6. (Optional) Update the task name and provide a description.
7. (Optional) Expand  Schedule to specify the task schedule.
You can schedule the task to run immediately or later. The default setting
is  Now . If the task is scheduled to run immediately, you can select  View
task status  to monitor the task after it is submitted.
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							8.Click  Submit.
If the task is scheduled to run immediately, the process begins.
9. (Optional) Check the progress and result of the task on the  Tasks &
Alerts  tab. Click the task name to view details of the task.
Result
Information about the created LUSE volume can be verified in the list of
volumes for the target host on the Resources tab.
Related concepts •
About creating a LUSE volume  on page 146
About releasing a LUSE volume To release a LUSE setting, the LUSE volume must first be unallocated from allhosts. Users can release a LUSE setting either by selecting it or using the
Unallocating Volumes dialog box.
Note:  For Virtual Storage Platform G1000, you cannot release LUSE volumes.
Related concepts
•
About removing hosts and releasing associated resources  on page 73
•
About deleting unallocated volumes  on page 145
Related tasks
•
Releasing a LUSE volume  on page 148
Related references
•
Unallocate volumes dialog box  on page 216
Releasing a LUSE volume Releasing the LUSE setting for a target volume releases the LUSE volume.
Prerequisites
Before releasing a LUSE volume, make sure that the volume has been
unallocated from all hosts.
Procedure 1. On the  Resources  tab, expand the  Storage Systems  tree, and for the
target storage system, select  Volumes and Open-Unallocated .
2. From the list of volumes, select the volume for which the LUSE setting is
to be released, and click  Release LUSE Volumes .
3. Verify that the information in the Plan Summary is correct.
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							4.(Optional) Update the task name and provide a description.
5. (Optional) Expand  Schedule to specify the task schedule.
You can schedule the task to run immediately or later. The default setting
is  Now . If the task is scheduled to run immediately, you can select  View
task status  to monitor the task after it is submitted.
6. Click  Submit.
If the task is scheduled to run immediately, the process begins.
7. (Optional) Check the progress and result of the task on the  Tasks &
Alerts  tab. Click the task name to view details of the task.
Result
When the task completes, the LUSE setting for the target volume is released.
Related concepts•
About releasing a LUSE volume  on page 148
Virtualizing external storage This module describes virtualizing external storage so that external volumes
can be managed.
About virtualizing and unvirtualizing volumes Virtualizing volumes is the process of mapping external storage systemvolumes to an internal storage system.
Virtualized volumes allow for centralized management of volumes from multiple external storage systems, in addition to the volumes from the single
storage system being managed with Hitachi Command Suite.
The volumes in the external storage system (registered and referred to as
external volumes ) can be managed in the same way as the volumes in the
internal storage system (registered and referred to as  internal volumes).
Volume virtualization provides the capability to optimize storage services to applications by facilitating movement of data between tiers and migration of
data between different generations of technology.
Note:  Internal and external storage systems can be conected by Fibre
Channel or Fibre Channel over Ethernet, but connections between different
port types with switches that convert between Fibre Channel and Fibre
Channel over Ethernet are not supported.
When external storage is managed by an internal storage system, external
volumes will be listed in the External Storage folder of the internal storage
system.
External volumes can be used for various purposes:
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							• External volumes can be allocated to hosts the same as internal volumesare.
• Important data on internal volumes can be backed up to external volumes.
• Infrequently accessed data on internal volumes can be moved to external volumes for archiving.
You can virtualize volumes in two ways:
• Virtualizing volumes: In HCS, external volumes are mapped by specifying the external storage
system, internal storage system, external volumes, and number of
external paths. Although HCS manages only registered storage systems, external volumes in unregistered storage systems can also be mapped.
If the external storage system is registered in HCS, you can directly specify individual external volumes in that storage system, or you can
specify just the size and number of volumes. HCS suggests mapping plans accordingly.
• Discovering and virtualizing volumes: If HCS does not manage the external storage system, HCS detects the
external volumes allocated to the internal storage system's external ports,
and then selects the volume to be used. If no volume that meets the
conditions exists in the external storage system, a volume is automatically
created from free space in the parity group.
When you want to perform a data migration or discard devices, you must cancel the virtualization. When you unvirtualize volumes, the virtualized
volumes are unmapped from the specified external storage.
• If you are unvirtualizing volumes from a registered storage system, the volumes are automatically unallocated. You also have the options to delete
the volumes or host group.
• If you are unvirtualizing volumes from an unregistered storage system, the volumes are only unmapped. Other management tasks are not available.Tip:  For Virtual Storage Platform G1000 storage systems, you can reconnect
or disconnect external storage systems, reconnect or disconnect external volumes, edit path configurations, or unvirtualize external volumes by using
the windows available by clicking the System GUI link. To access the System GUI link, on the Resources tab, right-click External Storage for the targetstorage system, and then select System GUI from the menu. Or, click
External Storage for the target storage system, and then click the System
GUI link that appears in the application pane.
For information about how to perform tasks that are available by clickingSystem GUI, see the Help for the appropriate window, or see the  Hitachi
Virtual Storage Platform G1000 Provisioning Guide for Open Systems .
For related information on external storage virtualization, see the  Hitachi
Universal Volume Manager User Guide .150Provisioning storageHitachi Command Suite User Guide