Hitachi Command Suite 8 User Guide

							Tip: Virtualizing an SMI-S enabled storage system without registering the
system in HCS can also be done by using the port scan and volume discovery
functionality.
You must be assigned All Resources to view or perform tasks on SMI-S enabled storage systems.
Related tasks
•
Migrating data from an SMI-S enabled storage system to another storage
system  on page 346
•
Discovering and virtualizing volumes of an unregistered storage system  on
page 152
Registering hosts You can register hosts as managed resources using Device Manager so thatstorage system volumes can be used by hosts and their applications.
About registering a host Discover and register hosts to manage them in Hitachi Command Suite.
The following host types can be added to HCS:
• Normal hosts (an open host that is not virtualized) • Virtualization servers (a physical server on which virtualization software is installed)
• Virtual machines (a machine that is created on the virtualization server and uses virtualization software)
Depending on the purpose, there are multiple methods for discovering and
adding hosts, including manually, by using Host Data Collector (agentless
discovery), or by using a Device Manager agent. For host prerequisites and
environment settings, see the  Hitachi Command Suite Administrator Guide .
You can also monitor the usage status of storage resources from the host point of view by generating reports that reflect the actual capacity being usedby each host.
Related concepts
•
Methods for registering hosts  on page 61
•
About changing host settings and information  on page 68
Related references
•
Priority for acquiring the WWN or iSCSI name  on page 63
Methods for registering hosts There are a variety of methods to register one or more hosts including usingits WWN, using host-installed agents, or agentless discovery.
Discovering, registering, and adding management targets61Hitachi Command Suite User Guide 
						

							The following table describes the methods you can use to register one ormore hosts:
Table 3-1  Methods for registering hostsPurposeMethodDescriptionTo manually
register
individual hosts.Register each
host by WWN/
iSCSI name.To register hosts in HCS based on WWN/iSCSI name, manually
specify the host name, OS type, and WWN/iSCSI name
information.
Hosts can be registered without Host Data Collector or Device
Manager agent setup.
Virtualization servers can also be manually registered, but the
virtual machine information cannot be referenced or displayed.To register
multiple hosts in
a batch.Use Host Data
Collector.Register multiple hosts in batch by specifying the IP address
(range specification and listing addresses are available), and the
authentication information of the host on the network. The
host’s WWN/iSCSI name information is automatically obtained.
To allocate volumes to an FCoE port, you must manually add a
WWN.
Host Data Collector setup is required.To know the
usage status of
storage
resources for the
virtualization
servers, or the
correspondence
with the virtual
machines.Use Host Data
Collector.To know the usage status of storage resources for the
virtualization servers, or the correspondence with the virtual
machines, and when you want to register both the virtualization
server and the virtual machine, the virtualization server must
use NPIV (N-Port ID Virtualization) HBAs, and be connected
with Fibre Channel or FCoE.
For virtual machines, install Device Manager agent or use Host Data Collector to specify the IP address (range specification and
listing addresses are available), and the authentication
information of the host on the network.
If the virtualization server is not using NPIV HBAs, either a
virtualization server or a virtual machine can be registered per
HBA unit (both a virtualization server and a virtual machine
cannot be registered in the same WWN).To automatically
collect host
information, or
to manage a
copy pair by
using the
replication
functionality of
the volume.Use Device
Manager
agent.To automatically collect host information, or to manage a copy
pair by using the replication functionality of the volume, install
Device Manager agent on each host or on the management
server of the copy pair. Host information or copy pair
information is sent from Device Manager agent. For details
about installing the Device Manager agent, see the  Hitachi
Command Suite Installation and Configuration Guide .
To exclude a host from being managed by HCS, uninstall the
Device Manager agent, and then remove the host using HCS.
To allocate volumes to an FCoE port, you must manually add a
WWN.To newly install
Hitachi
Command Suite
to an existing
environment that
was configuredScan a host.Use Host Scan when you want to newly install HCS to an
existing environment that was configured by using Hitachi
Storage Navigator.62Discovering, registering, and adding management targetsHitachi Command Suite User Guide 
						

							PurposeMethodDescriptionwith Hitachi
Storage
Navigator.To synchronize
host information
between Device
Manager and
Compute
Systems
Manager.Install Device
Manager and
Compute
Systems
Manager on
the same
server, and
obtain host
information
through Host
Data Collector.If Device Manager and Compute Systems Manager are installed
on the same server, information about hosts being managed by
both products is synchronized automatically when using Host
Data Collector. Therefore, hosts registered in Compute Systems
Manager are also registered in Device Manager. However, host deletion is not synchronized. If you want to re-synchronize a
Compute Systems Manager host that has been deleted from
Device Manager, you must manually re-synchronize the
managed hosts.Tip:  To register multiple hosts in a batch operation, use the  ImportHosts
command to import host information such as host name and WWNs, or an
iSCSI name, from a CSV file, and then register multiple hosts in a batch
operation. Hosts that are registered by using the  ImportHosts command are
managed as manually registered hosts. For details about the  ImportHosts
command, see the  Hitachi Command Suite CLI Reference Guide .
Related concepts
•
About registering a host  on page 61
•
About linking with Compute Systems Manager  on page 451
Related tasks
•
Registering hosts by using Host Data Collector  on page 64
•
Registering hosts manually by specifying the WWN or iSCSI name  on page
65
•
Registering hosts using host scan  on page 66
Related references
•
Priority for acquiring the WWN or iSCSI name  on page 63
Priority for acquiring the WWN or iSCSI name If hosts you want to register include a host that has a WWN or an iSCSIname that has already been registered, the host that acquires the WWN oriSCSI name is determined based on the product or application that detects it,
and is registered according to the following acquisition priority list.
When hosts are registered by using multiple methods, the WWN or iSCSI
name acquisition priority, listed from highest to lowest is:
1. A virtualization server (other than one registered manually) (iSCSI is not
supported).
Discovering, registering, and adding management targets63Hitachi Command Suite User Guide 
						

							2.A virtualization server that is registered manually (iSCSI is not supported
for virtualization servers).
3. A host registered by using Device Manager agent.
4. A normal host or a virtual machine registered either manually or by using
Host Data Collector.
When hosts with the same WWN or iSCSI name are registered by using the same method:
• If a host is registered without using the Device Manager agent, the WWN or iSCSI name of the host that was registered first is retained.
• If a host is registered by using the Device Manager agent, the WWN or iSCSI name is registered to the host that was registered last.
Related concepts
•
About registering a host  on page 61
•
Methods for registering hosts  on page 61
Registering hosts by using Host Data Collector Use Host Data Collector to discover and register multiple hosts, virtualizationservers, and virtual machines in a single task.
When using Host Data Collector, if Device Manager is linked with Compute
Systems Manager, hosts managed by Compute Systems Manager will be registered in Device Manager.
Prerequisites
• Gather the following information:
○Host OS type
○ Host IP address (IPv4)
Note: 
To detect multiple hosts at the same time, specify a subnet or a
range of 256 or fewer IP addresses, or specify individual IP addresses.
○ User name and password for logging on to the host (with Administrator
or superuser permissions)
Note:  When specifying users other than the root, you need to specify
environment settings for when general users are used to collect host
information on the host side. For details about how to specify settings,
see the  Hitachi Command Suite Administrator Guide .
○IP address of Host Data Collector (IPv4 or IPv6) or Host Name
• Gather the following information when registering a virtualization server: ○IP address of Host Data Collector (IPv4 or IPv6) or Host Name
○ IP address of VMware vCenter Server or a virtualization server (IPv4 or
IPv6)
64Discovering, registering, and adding management targetsHitachi Command Suite User Guide 
						

							Note: To register a virtualization server, you cannot specify a subnet, a
range, and multiple IP addresses.
○ User name and password of a user (who has the role of system
administrator) for logging on to vCenter Server or virtualization servers
Note:  If vCenter Server is being used, enter the user name and
password for vCenter Server. If vCenter Server is not being used, you
need to enter and register user names and passwords of virtualization
servers one by one if multiple virtualization servers are being managed.
• Verify that target hosts are connected to the network.
• Specify environment settings for virtualization servers. For details see the Hitachi Command Suite Administrator Guide .
Procedure 1. On the  Administration  tab, select Managed Resources .
2. On the  Hosts tab, click  Add Hosts .
3. In the  Add Hosts  dialog box, click  Discover Hosts.
If you are registering a virtualization server, select  VMware from OS
Type .
4. Specify the necessary items, select the  Host Data Collector to be used,
and then submit the task.
The task is registered and listed on the  Data Collection Tasks tab.
5. Verify task status on the  Data Collection Tasks tab.
Result Registered hosts can be viewed in the Resources list on the Navigation pane.
Tip:  If you want to allocate volumes to an FCoE port, you need to manually
add a WWN.
Related concepts
•
Methods for registering hosts  on page 61
Registering hosts manually by specifying the WWN or iSCSI name You can register hosts manually to manage and monitor the hosts by
specifying a WWN or iSCSI name.
Prerequisites
• Host name
• OS type • Unregistered WWN or iSCSI name
Discovering, registering, and adding management targets65Hitachi Command Suite User Guide 
						

							Procedure1. On the  Administration  tab, select Managed Resources .
2. On the  Hosts tab, click  Add Hosts .
3. In the  Add Hosts  dialog box, select  Add Hosts Manually .
4. Specify the appropriate information, and then click  OK to submit the
task.
If specifying a virtualization server, in  OS Type select VMware .
Result All registered hosts, virtual machines, and virtualization servers are displayed
by each host OS type (for example: AIX, HP-UX, Linux, Solaris, Windows, Virtualization Servers, or Others) in the Resources list on the Navigation
pane.
Related concepts
•
Methods for registering hosts  on page 61
Registering hosts using host scan You can register hosts by using host scan to discover hosts so that they can
be managed and monitored.
Scanning for hosts automatically creates hosts with host names that match
the WWNs or iSCSI names that are registered in the host group or iSCSI
targets on the storage system. For best results, your environment should
satisfy the following conditions:
• The name of a host group or iSCSI target should be the same as the actual host, and the WWN or iSCSI name for that host is set for LUN security.
• Only a single host can be related to each host group or iSCSI target.
Prerequisites
• Install LUN Manager on the target storage system.
Procedure 1. On the  Administration  tab, select Managed Resources .
2. On the  Hosts tab, click  Host Scan .
3. Confirm that your environment meets the recommended conditions, and
then select storage systems on which to scan for hosts.
4. Click  Submit .
Result
All registered Data Collection Tasks hosts, virtual machines, and virtualization servers can be viewed by host OS type (for example: AIX, HP-UX, Linux, Solaris, Windows, Virtualization Servers, or Others) in the Resources list on
the Navigation pane. If a virtualization server that has an iSCSI name is
scanned, it is displayed in host OS type, Others.
66Discovering, registering, and adding management targetsHitachi Command Suite User Guide 
						

							Tip: If one host has multiple WWNs or iSCSI names detected, even if it is
one host in the actual environment, it might occasionally be registered as
multiple hosts by Device Manager. This is because hosts are generated in
host groups or iSCSI targets when one host has multiple WWNs or iSCSI
names . In this case, the hosts must be merged, meaning merge the WWNs
or iSCSI name. Merge the hosts that have been added as multiple hosts in
Device Manager into one host, meaning that WWN or iSCSI name information
is merged, and the source hosts are deleted automatically.
Related concepts
•
Methods for registering hosts  on page 61
Related tasks
•
Registering hosts using merge hosts  on page 67
•
Installing a software application  on page 46
Related references
•
Workflow for detecting hosts  on page 69
Registering hosts using merge hosts You can use merge hosts to combine source and target host information into
a single surviving target host that is registered. The maximum number of WWNs and iSCSI name that you can merge at one time is 100.
Prerequisites
• Identify the names of the source and target host. Note that the source host is merged into the target host, then the source host is deleted.
• Ensure the source host has been registered either manually or by host scan.
• Ensure the target host is not a mainframe host, a file server, or a virtualization server (except for manually registered virtualization servers).
• Ensure the target host has at least one registered WWN or iSCSI name.
Procedure 1. On the  Administration  tab, select Managed Resources .
2. Select the  Hosts tab, select the target host row, click  More Actions and
select  Merge Hosts .
3. In the merge hosts window, select the source host, then click  Show
Plan .
4. Review the target (surviving host) and source (host to be deleted)
information.
• If the target and source host information is correct, click  Submit.
• If the target or source host information must be changed, click  Back.
• To abandon the task, click  Cancel.
Discovering, registering, and adding management targets67Hitachi Command Suite User Guide 
						

							5.On the  Resources  tab, in the hosts tree, confirm the target host
information and the source host removal. You can also confirm this on the  Administration  tab in the Hosts tree under  Managed Resources .
Related concepts •
Methods for registering hosts  on page 61
About changing host settings and information You can change host settings and update previously registered host
information.
Depending on how a host is registered, you change host settings and
information by using either of the Refresh Hosts or Edit Hosts options. The Refresh Hosts option updates a host by obtaining information from the HostData Collector or Device Manager agent. The Edit Hosts option allows you to
manually change host settings.
Note:  If a Device Manager host is registered on Compute Systems Manager,
and if you update host information using Compute Systems Manager, that
information is automatically updated in Device Manager.
You can update other host-related information when replacing host HBAs by
exchanging the WWN settings in the LUN paths so that the new HBA inherits
the WWN settings from the old HBA. Perform this settings exchange by using
the Exchange HBAs dialog box when you replace a host HBA due to failure, or
by using the Add HBAs dialog box and the Remove HBAs dialog box when you
complete a planned HBA replacement as part of scheduled maintenance to
prevent performance degradation.
Tip:  The settings for the host WWN or iSCSI name are not linked to the
settings for the host group or iSCSI target on the storage system side. For
example, even if you delete the host WWN or iSCSI name, the WWN or iSCSI
name is not deleted from the host group or iSCSI target.
To delete the WWN after replacing HBAs, use the Remove HBAs dialog box.
To delete the WWNor iSCSI name from a host group at a time other than
when replacing an HBA, use the  ModifyPort command.
For details about using the  ModifyPort command, see the  Hitachi Command
Suite CLI Reference Guide .
Related concepts
•
About registering a host  on page 61
Related tasks
•
Updating host information registered by using Host Data Collector  on page
70
68Discovering, registering, and adding management targetsHitachi Command Suite User Guide 
						

							•Changing settings for a manually registered host on page 71
•
Changing settings for a host registered by using Device Manager agent  on
page 72
Workflow for detecting hosts This topic describes how hosts are detected and registered in Device
Manager. Read this topic if you are installing Hitachi Command Suite in an environment that was configured by using Storage Navigator.
A host group or iSCSI target is configured on the storage system side, and
the storage system is registered in Device Manager. After that, if a host is detected by Device Manager, a host group in the storage system that is
selected at the time of detection of the host or a host that has the same name as the name of the iSCSI target is registered in Device Manager. If the
same WWN is registered to multiple hosts, or if the same iSCSI name is
registered to multiple iSCSI targets, only the WWN or iSCSI name with the same name as the host that is already registered in Device Manager is added
to the host. The following shows an example of host detection:
In this diagram, the WWN of 22.22.22.22.22.22.22.22 for host group AAA is
added to host AAA, which has the same name as the host group. The WWN
of host group BBB is already registered to host AAA, and host BBB cannot be registered in Device Manager. Host CCC, which has the same name as host group CCC, is added to Device Manager, and the WWN of33.33.33.33.33.33.33.33 for host group CCC is registered to host CCC.
If one host that has multiple WWNs or iSCSI names is detected, even if it is one host in the actual environment, it might occasionally be registered as
multiple hosts by Device Manager. This is because hosts are generated in
Discovering, registering, and adding management targets69Hitachi Command Suite User Guide 
						

							host groups or iSCSI targets when one host has multiple WWNs or iSCSInames. In this case, the hosts must be merged.
Merge the WWNs and iSCSI names. Merge the hosts that have been added as
multiple hosts in Device Manager into one host. WWN or iSCSI name
information is merged, and the source hosts are deleted automatically.Tip:  If one host that has multiple WWN or iSCSI names is detected, even if it
is one host in the actual environment, it might occasionally be registered as
multiple hosts by Device Manager. This is because hosts are generated in
host groups or iSCSI targets when one host has multiple WWNs or iSCSI
names. In this case, the hosts must be merged. Merge the WWNs or iSCSI
names. Merge the hosts that have been added as multiple hosts in Device
Manager into one host. WWN or iSCSI name information is merged, and the
source hosts are deleted automatically.
Related tasks
•
Registering hosts using host scan  on page 66
Updating host information registered by using Host Data Collector You can update information for registered hosts using Host Data Collector. If
Device Manager is linked to Compute Systems Manager, updated host information is synchronized between Device Manager and Compute Systems
Manager.
Use Refresh Hosts to update host information registered by using Host Data
Collector.
To change authentication information about a registered IP address or user
account, edit the IP address or user account by using the Edit Hosts dialog
box, and then refresh host information.
To make changes to each item, use the method in the following table:
Table 3-2  Updating host information using Host Data Collector
ItemRefresh HostsEdit HostsHost NameYNOS TypeNNHost IP AddressNY1User ID/PWNYHost Data Collector IP AddressNY2ProtocolNYPort Type 5Y3Y3,5WWN/iSCSI name  5Y3Y3,4,5WWN NicknameN 6N70Discovering, registering, and adding management targetsHitachi Command Suite User Guide