Hitachi Command Suite 8 User Guide

							Related concepts
•
Creating a storage operating environment  on page 132
Related tasks
•
Virtualizing volumes of a registered storage system  on page 151
•
Discovering and virtualizing volumes of an unregistered storage system  on
page 152
•
Unvirtualizing volumes  on page 154
Virtualizing volumes of a registered storage system Choose from a list of existing unallocated volumes in the external storage
system to be virtualized. Or specify the number of volumes and volume
capacity to search for volumes that meet the criteria.
Prerequisites
• The internal and external storage systems are registered in Hitachi Command Suite.
• The external storage system is connected to one or more external ports of the internal storage system.
• Hitachi Universal Volume Manager (UVM) is installed on the internal storage system.
• Specify the volumes or identify the number and capacity of volumes you are virtualizing.
• Identify the number of external paths between the external and internal storage systems. The maximum number of external paths that can be setis eight.
Procedure 1. From the  Actions menu or  General Tasks  pane, select Virtualize
Volumes .
2. From the list, select an external storage system. A storage system is
preselected if you selected a storage system from the Storage Systemstree and launched the dialog box.
3. From the list, select an internal storage system.
4. Choose the volumes by clicking one of the following options:
• Select from existing available volumes : Click Add/Remove
Volumes  to select from a list of available volumes, then click  Add to
add them to the Selected Volumes table.
• Specify number of volumes and volume capacity : From the list,
select the  No. of Volumes  and enter the Volume Capacity . Click
Advanced Options  to specify drive type, drive speed, RAID level, or
parity group in the volume criteria. The storage system will search for
volumes that match the criteria.
5. Specify the  No. of External Paths per Volume .
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							6.(Optional) Click  External Path Priority Settings  to configure the
external path and increase or decrease external path priority.
7. (Optional) Click  Host Group and LUN Settings  to configure the host
group settings and LUN number.
8. (Optional) Click  Internal Volume Configuration  to configure the
options for the volume to be virtualized, such as the parity group ID, CLPR, inflow control, LDEV labels, and LDEV IDs.
9. Click  Show Plan  and confirm that the information in the plan summary
is correct. If changes are required, click  Back.
10. (Optional) Update the task name and provide a description.
11. (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.
12. Click Submit.
If the task is scheduled to run immediately, the process begins.
13. (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 existing volumes are allocated to the internal
storage system and virtualized.
Related concepts •
About virtualizing and unvirtualizing volumes  on page 149
Related tasks •
Unvirtualizing volumes  on page 154
•
Installing a software application  on page 46
Related references
•
Virtualize Volumes dialog box  on page 155
Discovering and virtualizing volumes of an unregistered storage
system
Use the port scan and volume discovery functionality to detect external
storage system volumes allocated to the external port and then virtualize the available volumes.
Prerequisites
• The internal storage system is discovered in Hitachi Command Suite.
• The internal storage system is the Virtual Storage Platform G1000, Virtual Storage Platform or the Unified Storage VM that has the port scan and
volume discovery functionality.
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							• The external storage system is connected to one or more external ports ofthe internal storage system.
• The external mapping volumes are already allocated to the external ports.
• Hitachi Universal Volume Manager (UVM) is installed on the internal storage system.
Procedure 1. From the  Actions menu or  General Tasks  pane, select Virtualize
Volumes .
2. From the list of external storage systems, select  Search new systems/
volumes by port scan .
3. From the list, select an internal storage system.
4. Specify the external paths by choosing one of the following options:
• Click  Select newly discovered external paths  and continue with
step 5.
• Click  Select an existing external path group , select an external
path group from the list, and continue with step 7.
5. Click  Start Port Scan .
The external storage is discovered and the port ID and external WWN are displayed.Note:  Because the external storage is discovered, you can virtualize
additional volumes at a later time without doing a port scan, provided
that the same external paths are used. If you are virtualizing additional volumes at a later time and not using the same external paths, then you
need to use the port scan functionality to discover available external
storage volumes.
6. Select an external storage, then choose the external paths to be used for
virtualization and click  OK.
7. (Optional) Click  External Path Priority Settings  to configure the
external path and increase or decrease external path priority.
8. Click  Start Volume Discovery .
The volumes that can be accessed using the selected external paths are displayed.
9. Review the list of volumes to be virtualized and click  OK.
10. (Optional) Click  Internal Volume Configuration  to configure the
options for the volume to be virtualized, such as the parity group ID,
CLPR, inflow control, LDEV labels, and LDEV IDs.
11. Click Show Plan  and confirm that the information in the plan summary
is correct. If changes are required, click  Back.
12. (Optional) Update the task name and provide a description.
13. (Optional) Expand  Schedule to specify the task schedule.
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							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.
14. Click Submit.
If the task is scheduled to run immediately, the process begins.
15. (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 volumes on the discovered external storage
system are virtualized and can be managed from HCS.
Related concepts
•
About virtualizing and unvirtualizing volumes  on page 149
Related tasks
•
Unvirtualizing volumes  on page 154
•
Installing a software application  on page 46
Related references
•
Virtualize Volumes dialog box  on page 155
Unvirtualizing volumes When you unvirtualize volumes, virtualized volumes are unmapped from the
specified external storage system.
Prerequisites
• Volumes to be unmapped on the storage system are virtualized.
Procedure 1. From the  Actions menu or  General Tasks  pane, select Unvirtualize
Volumes .
2. From the list, select an external storage system.
3. From the list, select an internal storage system.
The parity groups that correspond to the virtualized volumes from the
selected external storage system are displayed in the Selected Parity
Groups table. Only parity groups that are available to unmap are listed in
the table.
4. (Optional) Click  Add/Remove Parity Groups . In the Selected Parity
Groups table, select any external parity groups that you do not want
unmapped and click  Remove to move them to the Existing Parity Groups
table. You can select several external parity groups at one time.
5. (Optional) Click  Advanced Options  to configure deleting the host group,
releasing LUSE volumes, or deleting volumes.
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							Note: If the selected external storage system is not a registered storage
system, you can unmap volumes only.
6. Click  Show Plan  and confirm that the information in the plan summary
is correct. If changes are required, click  Back.
7. (Optional) Update the task name and provide a description.
8. (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.
9. Click  Submit.
If the task is scheduled to run immediately, the process begins.
10. (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 volumes on the selected external storage system are unmapped.
Related concepts
•
About virtualizing and unvirtualizing volumes  on page 149
Related tasks
•
Virtualizing volumes of a registered storage system  on page 151
•
Discovering and virtualizing volumes of an unregistered storage system  on
page 152
Related references
•
Virtualize Volumes dialog box  on page 155
Virtualize Volumes dialog box Volume virtualization provides the capability to optimize storage services toapplications by facilitating movement of data between tiers and migration of
data between different generations of technology.
When you enter the minimum required information in a 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.
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							Table 5-3  Virtualize Volumes dialog box
FieldSubfieldDescriptionSelect the
external and
internal storage
systems-External storage system is displayed if you selected a
registered storage system and launched the dialog box.
If you did not, select an external storage system from
the list.
From the list of external storage systems, select
Search new systems/volumes by port scan to scan
ports and discover volumes of unregistered storage
systems.
From the list of internal storage systems, select the internal storage system that you want to use.Start Port ScanAvailable when Search new systems/volumes by port
scan is selected.
Before clicking Start Port Scan, you have the options
for specifying the external paths by choosing Select
newly discovered external paths or Select an existing
external path group.Add/Remove External
PathsAfter the port scan, the discovered external storage is
displayed in alphabetical order. The first one is selected
by default.
The newly discovered external paths between the
selected internal and external storage systems are listed. Click Add to add the external paths that you
want to virtualize.Start Volume DiscoveryClick to search for available volumes.Select from
existing available
volumes-Select and click Add/Remove Volumes. From the list of
available external volumes, select the volume to be
allocated to the internal storage system and click Add.Specify the
number of
volumes and
volume capacity-Specify the Number of Volumes that you are
virtualizing. The new volumes will be partitioned on the
external storage system and then allocated to the
internal storage system.
In the Volume Capacity dialog box, enter the storage
capacity of the volumes you are virtualizing. Specify the value in MB, GB, or TB.
The required capacity is based on the number of
volumes and the volume capacity.>> Advanced
Options(See the following four
fields for details)Click >> Advanced Options to display and configure drive and parity group options.Drive type-Existing drive type is displayed based on the selected
storage system. If multiple drive types are displayed,
accept the default or select from the drive type list:
• Any
• FC - Fibre channel
• SAS - Serial Attached SCSI
• SATA - Serial ATA
• FMD - Flash module drive
• SSD - Solid state drive156Provisioning storageHitachi Command Suite User Guide 
						

							FieldSubfieldDescription• SAS (SED) - SAS self-encrypting drive
Any is displayed when you can select more than two
drive types.
Changing drive type can change the parity group.Drive speed
(RPM)-Existing drive speed is displayed based on the selected
storage system. If multiple drive speeds are displayed,
accept the default of any available speed or select from
the drive speed list:
• Any
• 15000
• 10000
• 7200
Any is displayed when you can select more than two drive speeds.
Changing the drive speed (rotational RPM) can change
the parity group.RAID level-Existing RAID levels are displayed for the external
storage system. For example, RAID 0, 1+0, 5, and 6 are valid RAID configurations when 6 drives are
available (for example, HUS 100). If the HUS 100
storage system has RAID 5 (3D+1P) parity groups,
then RAID 5 (3D+1P) is displayed. The RAID levels
change in the dialog box based on the selected storage
system and supported RAID levels.Parity GroupSelect Parity GroupThe parity group. Based on the drive type, drive speed,
and RAID level values, an appropriate parity group is
selected.
Select a parity group by clicking Select Parity Group.
From the list of parity groups, sort and filter columns
such as RAID level, unallocated capacity, or other fields
to identify the preferred parity groups.No. of External
Paths per
Volume-Select the number of external paths between the
external and internal storage systems. The number can
be 1 through 8.External PathsExt. Storage PortThe port of the connected external storage system.
This port is a part of the external storage and used to connect to the internal storage.ControllerThe external storage controller device information. This
device controls the transfer of data between an
external storage system and an internal storage
system.Ext. Storage SystemThe connected external storage system.Int. Storage SystemThe connected internal storage system.Int. Storage PortThe port of the connected internal storage system. This port is a part of the internal storage and used to
connect to the external storage.Edit External PathsEdit external paths from a table or from a graph. To
create an external path, select an external storage port
and an internal storage port. To delete an externalProvisioning storage157Hitachi Command Suite User Guide 
						

							FieldSubfieldDescriptionpath, select the path that you want to delete. ClickClear External Paths.
External paths can be edited from a table or from a
graph. To create an external path, select an external
storage port and an internal storage port. To delete an
external path, select the path that you want to delete.
To delete all paths, click Clear External Paths.Port Type (Ext./Int.)The port types of the storage ports of both the external
and internal storage systems are displayed.>> External Path
Priority Settings(See the following four
fields for details)Click >> External Path Priority Settings to increase or
decrease the external path priority.Ext. Storage Port-The port for the connected external storage system.Int. Storage Port-The port for the connected internal storage system.Port Type (Ext./
Int.)-The storage port type of the external path. The port
types of the storage ports of both the external and
internal storage systems are displayed.Increase Priority-Increase the priority of the selected external path. The
path with the highest priority is the primary path if the
external storage system works in a single path mode.Decrease Priority-Decrease the priority of the selected external path. The
path with decreased priority is the alternate path if the external storage system works in a single path mode.>> Host Group
and LUN Settings(See the following four
fields for details)Volume allocations using Fibre Channel and FCoE
prompt for such items as host group name, host mode,
host mode options, and LUN number.
To display or hide the following fields, click Host Group and LUN Settings.Host group name-Specify a host group name for the internal storage
system. Paths are allocated from the external storage
system to the internal storage system.Host Group
Settings in Detail-The host groups to be used during volume allocation or
that were previously set during prior volume allocation.Host Mode
Options-Select one or more host mode options for supporting
special requirements for specific applications.LU Number (hex)-Assign LU numbers to the allocated volumes by
entering a Start from number (or using the default).
Set LU numbers in ascending order and do not use
existing numbers.>> Internal
Volume
Configuration(See the following four
fields for details)Click >> Internal Volume Configuration to display and configure the internal volume options.Parity Group-Assign internal volumes to a parity group by entering a
Start from number. For Device Manager, when you specify the first number (1-16384), the second numberis automatically assigned.
The format for specifying external parity groups is, for
example, "E1" or "E16384".158Provisioning storageHitachi Command Suite User Guide 
						

							FieldSubfieldDescriptionCLPR-From the list, select the cache logical partition resource
(CLPR) value for the internal volumes.Inflow control-Select Enable to stop write operations to cache and to
stop I/O from the host when the write operations to
the external volume fails.
Select Disable to write I/O from the host during retry
operations to cache memory, even when the writing operation to the external volume fail. When writeoperations to the external volume returns to normal,
all the data in cache memory is written to the external
volume.
The default is Disable.Cache mode-Select Enable, after receiving the data into the internal
storage system cache memory, the internal storage
system signals the host that an I/O operation has completed and then asynchronously writes the data in
cache memory to the external storage system.
If you select Disable, the internal storage system signals the host that an I/O operation has completed
only after the local storage system has synchronously
written the data to the external storage system.
The default is Enable.Resource group-Resource groups listed by storage system, parity
group, LDEV ID, and storage port. Resource group appears only when multiple resource groups are
allocated and each resource group has LDEV IDs of
internal volumes that belong to the selected internal
storage system.Label-Volume labels are searchable, and therefore
recommended as a way to find volumes.
Specify and add a LDEV label.Initial value-The smallest number of sequential numbers. The Initial
value is not required but can be useful for
differentiation when virtualizing multiple volumes. For
each volume, the number is in ascending order of LDEV
ID.Reflect these
labels to the
storage system-Reflect these labels to the storage system is checked
by default so that naming is consistent between HCS
and the storage system. If the selected storage system
does not support label setting, this item is not
displayed.Quorum Disk-When virtualizing a Quorum disk for use in a global-
active device environment, the Change Internal
Volume(s) to Quorum Disk(s) checkbox must be
selected. The Remote Storage System is displayed, and
the recommended disk ID displayed, but can be
changed if necessary.LDEV ID-LDEV ID options include auto or manual.Provisioning storage159Hitachi Command Suite User Guide 
						

							Virtualizing storage capacity (HDP/HDT)This module describes how to virtualize storage capacity.
About virtualizing storage capacity Hitachi Dynamic Provisioning (HDP) provides virtual volumes to a host and
allocates the actual capacity from a HDP pool when a host makes a write
request. By using HDP pools, you can allocate more capacity to a host thanthat allowed by the actual physical configuration of the storage system.
HDP pools provide the following advantages: • You can reduce system setup and operational costs.
• You can use resources more efficiently.
• You can distribute workload equally among volumes.
Dynamic Tiering (HDT) improves HDP pools storage performance further by taking advantage of performance differences between hardware tiers.
Note:  The terms "HDP" and "HDT" are referred to collectively as "DP".
You can create virtual volumes (DP volumes) from physical volumes that are
grouped into DP pools. You can then allocate those virtual volumes to hosts.
In the illustration below, note that the volumes used to create the DP pool
are called DP pool volumes. The DP pool is then used to provide capacity as
needed to allocated DP volumes.
160Provisioning storageHitachi Command Suite User Guide