Hitachi Storage Navigator Modular 2 User Guide

							Managing Logical Units9–7
Hitachi Storage Navigator Modular 2 User’s Guide
•  Logical units set for a command device
•  Differential Management Logical Units (DMLUs)
•  Logical units registered in the data pool
•  Logical units in the RAID group during a RAID group expansion
•  Logical units of a RAID group in which spin-down is enabled. 
Change the status of the Power Saving feature to Normal (spin-
up) and then expand the logical units (see Executing a RAID group 
spin-up or spin-down on page 8-13).
Reducing logical units
You cannot reduce a logical unit under the following circumstances:
• When the logical unit’s properties are set to Read Only, Protect or 
Cant Guard.
• When the logical unit’s S-VOL setting is Setting Impossible (disabled) 
and the mode is either Read Capacity 0 (Zero) or Inquiry Command 
Shielding (Zer/Inv).
• If the Data Retention Utility is enabled and its properties are set to 
Read/Write, or if the S-VOL is set to Setting Possible (Enabled), 
and mode to Unset, and then reduce logical units.
In addition, wait until a drive is restored before reducing the logical units if 
the dynamic sparing/correction copy/copy back operation is in progress. 
Changing the capacity of a logical unit
The following procedure describes how to change the capacity of a logical 
unit. Do not skip any steps and be sure to follow the instructions carefully. 
If you do not perform a step correctly, data in the storage system can be 
lost and the unified logical unit will not be created.
Before beginning any LUN expansion procedure, note the following.
• Back up the unified logical units before modifying them.
• Format the unified logical units to delete the volume label which the 
operating system adds to logical units.
• Create unified logical units only from logical units within the same 
storage system.
• You must format a logical unit that is undefined before you can use it.
• You can increase the size of a logical unit using the available free space 
within the RAID group to which it belongs.
• You can change the capacity of a logical unit adding existing logical 
units to a selected logical unit.
After observing the guidelines above, change the capacity of a logical unit.
To change the capacity of a logical unit
1. In the Logical Units window, check the LUN whose capacity you want to 
change. 
						

							9–8Managing Logical Units
Hitachi Storage Navigator Modular 2 User’s Guide
2. Click Change LU Capacity. The Change Logical Unit Capacity window 
appears, showing the current properties of the selected LUN (see 
Figure 9-4). The free capacity (space) does not display for logical units 
that are members of a DP pool.
3. Review and complete the following settings at the top of the window:
•  LUN — read-only field that shows the number of the selected LUN.
•  Current Capacity — enter the size of the unified logical unit. The 
drop-down list lets you select the desired increment (for example, 
GB, TB, Block).
•  Free Capacity — logical unit’s free capacity. The drop-down list lets 
you select the desired increment (for example, MB, GB, TB, Block).
4. Complete the settings in the Basic tab (see Table 9-3 on page 9-5).
Figure 9-4:  Example of Change Logical Unit Capacity Window 
(Basic Tab)
5. To set advanced settings, click the Advanced tab and complete the 
settings (see Table 9-5 on page 9-10). 
						

							Managing Logical Units9–9
Hitachi Storage Navigator Modular 2 User’s Guide
Figure 9-5:  Example of Change Logical Unit Capacity Window 
(Advanced Tab)
6. Click OK. A confirmation window appears.
7. In the confirmation window, click the checkbox to agree that you have 
read the warning message, and then click Confirm to change the 
capacity of the logical unit (or click Cancel to retain the current 
capacity).
8. Click Close to exit the message box and return to the Logical Units 
window. 
						

							9–10Managing Logical Units
Hitachi Storage Navigator Modular 2 User’s Guide
Table 9-5:  Change Logical Unit Capacity Window —
Basic Tab 
FieldDescription
Method of Capacity Setting Select one of the following options:
• New capacity — enter a new capacity value 
and use the drop-down list to select one of 
the following options:
• An increment (MB, GB, etc.).
• ALL = assigns the maximum free space in 
the selected RAID group.
• RG ALL = assigns the maximum free 
space of the selected RAID group.
• Add logical units — check the checkbox that 
corresponds to a LUN from the Available 
Logical Units table.
Separate last logical unit Removes the last logical unit that was added to a 
unified logical unit.
Separate all logical units Separates a unified logical unit into the original 
logical units that were used to create it.
Table 9-6:  Change Logical Unit Capacity Window — 
Advanced Tab
FieldDescription
Select free space Select one of the following options:
• Set Automatically — allocates free space 
automatically to the logical unit, without 
requiring your intervention.
• Set Manually — lets you allocate free space 
to the logical unit by selecting an option from 
the Free Space table
Use LUN to create logical unit Enter the LUN to be used to create the logical 
unit.
Optimize after reducing capacity Check this checkbox to optimize the logical unit  
						

							Managing Logical Units9–11
Hitachi Storage Navigator Modular 2 User’s Guide
Displaying unified logical unit properties
To display the list of unified logical units
1. In the Logical Units window, click a LUN under the LUN column. The LUN 
screen appears, with detailed information about the selected LUN shown 
in the Properties tab (see Figure 9-6 on page 9-11).
Figure 9-6:  Example of LUN Screen — Properties Tab
2. To view information about thee sub-logical unit information about the 
selected logical unit, click the Sub Logical Units tab.
3. When you finish viewing the logical unit information, click Close.
Formatting logical units
If you no longer need a logical unit, you can delete it from the Logical Units 
window. When you delete a logical unit:
• The data becomes unusable. Systems or applications that use this 
storage system may end unexpectedly. Please make sure to stop the 
host access to the storage system before performing this operation.
• You will not be able to recover your data. Please make sure to perform 
backup of all important data before this operation.  
						

							9–12Managing Logical Units
Hitachi Storage Navigator Modular 2 User’s Guide
To format a logical unit:
1. In the left column of the Logical Units window, click the checkbox of the 
logical unit you want to format.
2. Click Format LU. A confirmation window appears. 
3. In the confirmation window, click the checkbox to agree that you have 
read the warning message, and then click Confirm to format the logical 
unit (or click Cancel to not format it).
4. Click Close to close the window and return to the Logical Units window.
Filtering logical units
The Logical Units tab provides a Filter button you can use to filter out logical 
units that do not meet certain criteria. This feature is particularly useful if 
you have a large number of logical units and only want to see a subset of 
them.
To filter logical units
1. In the Logical Units window, click the Filter button. The Logical Units 
Filter List Filter window appears (see Figure 9-7).
Figure 9-7:  Example of Logical Units Filter List
2. In the drop-down list, select whether you want to view All or Any logical 
units that meet the filtering criteria.
3. Use the Attribute, center, and Value drop-down lists to define the first 
criteria.
CAUTION! You cannot undo this operation. 
						

							Managing Logical Units9–13
Hitachi Storage Navigator Modular 2 User’s Guide
4. To define additional criteria, click the plus sign. When the next row 
appears, define a second set of criteria. You can also click the minus sign 
at the end of a row to delete that set of criteria from the filter.
5. When you finish defining criteria, click OK. Now only the logical units 
that meet your filtering criteria appear in the Logical Units window.
6. To remove all filtering criteria and redisplay all logical units in the Logical 
Units window, click Filter Off.
Deleting logical units
If you no longer need a logical unit, you can delete it from the Logical Units 
window. When you delete a logical unit:
• The data becomes unusable. Systems or applications that use this 
storage system may end unexpectedly. Please make sure to stop all 
host access to the storage system before performing this operation.
• You will not be able to recover your data. Please make sure to perform 
backup of all important data before this operation. 
You cannot delete a logical unit whose status following a forced parity 
correction has any of the following status messages:
• Correcting
•Waiting
• Waiting Drive Reconstruction
• Unexecuted, Unexecuted 1 or Unexecuted 2 
If any of the above messages appear, execute a forced parity correction for 
the logical unit, change the logical unit status to Correction Completed or 
Skip, and then delete this logical unit. 
To delete a logical unit:
1. In the left column of the Logical Units window, click the checkbox of the 
logical unit you want to delete.
2. Click Delete LU. A confirmation window appears. 
3. In the confirmation window, click the checkbox to agree that you have 
read the warning message, and then click Confirm to delete the logical 
unit (or click Cancel to retain it).
4. Click Close to close the window and return to the Logical Units window.
NOTE:The more criteria you define, the narrower the filtering becomes. 
						

							9–14Managing Logical Units
Hitachi Storage Navigator Modular 2 User’s Guide 
						

							Advanced Functions10–1
Hitachi Storage Navigator Modular 2 User’s Guide
10
Advanced Functions
This chapter describes how to perform advanced Navigator 2 
functions.
The topics covered in this chapter are:
ˆUsing Internet Protocol Version 6
ˆUsing secure sockets layer
ˆChanging the IP Address for connecting to Navigator 2
ˆChanging the Default Port Number for Navigator 2
ˆStarting or stopping the Navigator 2 service or daemon 
process
ˆStarting the Hitachi Storage Command Suite common 
components
ˆStarting the Navigator 2 server service or daemon process
ˆUsing the SATA Write and Compare feature
ˆUser Account settings for HiCommand Device Manager and 
Navigator 2 
						

							10–2Advanced Functions
Hitachi Storage Navigator Modular 2 User’s Guide
Using Internet Protocol Version 6
Most of today’s Internet uses Internet Protocol version 4 (IPv4). However, 
with the popularity of IP-enabled devices that access Internet and packet-
switched internetworks, there is an increasing shortage of IPv4 addresses. 
As the next-generation Internet protocol, IPv6 fixes the problem of dealing 
with a limited number of available IPv4 addresses. 
IPv6 guidelines
Some Navigator 2 windows allow you to enter IPv6 addresses, as well as 
IPv4 addresses. This section provides guidelines when using IPv6 addresses 
with Navigator 2.
Navigator 2 supported operating systems for IPv6
Table 10-1 lists the IPv6-supported operating systems.
IPv6 link-local addresses
Based on RFC 2462, all IPv6 nodes automatically configure a link-local 
address for each interface. By default, the IPv6 protocol for the supported 
Microsoft Windows operating systems in Table 10-1 on page 10-2 configure 
link-local addresses for each interface that corresponds to an installed 
Ethernet network interface card (NIC). Link-local addresses have the prefix 
Table 10-1:  IPv6-Supported Operating Systems 
Operating SystemNotes
Solaris 8 (SPARC)
Solaris 9 (SPARC)
Solaris 10 (SPARC)
Solaris 10 (x86) Supported only on the client
Solaris 10 (x64)
Windows Server 2003 (x86), SP 1
Windows Server 2003 (x86), SP2
Windows Server 2003 R2 (x86), SP1
Windows Server 2003 R2 (x64), SP1
Windows Vista (x86), SP1
Windows Server 2008 (x86), SP1, SP2
Windows Server 2008 (x64), SP1, SP2
Windows 7 (x86), no SP
Windows 7 (x64), no SP
Windows Server 2008 R2 (x64), no SP
Red Hat Enterprise Linux AS 4.0 update 1 Address searching function is not 
supported on the server.
Red Hat Enterprise Linux AS 4.0 update 5 Address searching function is not 
supported on the server.