Hitachi Storage Navigator Modular 2 User Guide

							Managing Storage Systems7–7
Hitachi Storage Navigator Modular 2 User’s Guide
Filtering storage systems
The Arrays window provides a Filter button you can use to filter out storage 
systems that do not meet certain criteria. This feature is particularly useful 
if Navigator 2 is managing a large number of HItachi storage systems and 
you only want to see a subset of them.
To filter storage systems
1. In the Arrays window, click the Filter button. The Array List Filter 
window appears (see Figure 7-4).
Figure 7-4:  Example of Array List Filter
2. In the drop-down list, select whether you want to view All or Any 
storage systems that meet the filtering criteria.
3. Use the Attribute, center, and Value drop-down lists to define the first 
criteria.
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 storage 
systems that meet your filtering criteria appear in the Arrays window.
6. To remove all filtering criteria and redisplay all storage systems in the 
Arrays window, click Filter Off.
NOTE:The more criteria you define, the narrower the filtering becomes. 
						

							7–8Managing Storage Systems
Hitachi Storage Navigator Modular 2 User’s Guide
Removing storage systems
If you no longer require Navigator 2 to manage a storage system, you can 
remove the storage system entry from the Navigator 2 database.
To remove a storage system
1. In the Arrays window, click the checkbox next to the storage system you 
want to delete.
2. Click the Remove Array button. The selected storage system is 
removed from the Arrays window and from the Navigator 2 database.
Running error monitoring
Navigator 2 provides error-monitoring capabilities that check for errors on 
selected storage systems at intervals you can set. If an error is detected, 
Navigator 2 outputs the error to an event log (see Managing alerts and 
events on page 7-13) .  a n d  n o t i f i e s  y o u  b y  e - m a i l  i f  c o n f i g u r e d  t o  d o  s o  ( s e e  
Configuring email notifications on page 7-11).
You configure and run error monitoring using buttons at the top of the 
Arrays window (see Figure 7-5 on page 7-9). Below these buttons are All 
Array Status and Error Monitoring fields that provide error-monitoring 
information about the managed storage systems (see Table 7-3 on page 7-
9).
CAUTION! No warning message appears before you click the 
Remove Array button. Therefore, be sure you no longer need a 
storage system to be managed by Navigator 2 before you delete 
the storage system from the Navigator 2 database. 
						

							Managing Storage Systems7–9
Hitachi Storage Navigator Modular 2 User’s Guide
Figure 7-5:  Error-Monitoring Options
Table 7-3:  All Array Status and Error Monitoring Descriptions
FieldDescription
All Array Status Shows the status for all storage systems that Navigator 2 is 
managing:
•Normal = all registered storage systems are working 
properly.
• The characters ---: = Navigator 2 cannot identify the 
storage system (for example, if the storage system power 
supply is off, a network communication problem occurred 
between Navigator 2 and the storage system, the storage 
system is secured by either Password Protection or Account 
Authentication).
•Warning = hardware failure (controller, hard disk drive, 
cache memory) or communication problem between the 
Navigator 2 server and storage system array controller.
Error Monitoring Reports the following system status:
•Running (Interval of N minutes) = monitoring error 
during N minutes, where N indicates how often error 
checking occurs (in minutes).
•Stopped = error monitoring is halted.
•Wait (Interval of N minutes) = error monitoring stopped 
for an interval of N minutes, where N is the time before 
error monitoring resumes.
Error-Monitoring Options
All Array Status and 
Error Monitoring 
						

							7–10Managing Storage Systems
Hitachi Storage Navigator Modular 2 User’s Guide
Configuring error monitoring options
Navigator 2 comes with preset error-monitoring options. Before you enable 
error monitoring, review the settings for these options and, if necessary, 
change them to suit your requirements.
To configure error monitoring options
1. In the Arrays window, click the Edit Error Monitoring Options button 
The Edit Error Monitoring Options window appears (see Figure 7-6).
Figure 7-6:  Edit Error Monitoring Options Window
2. Review and, if necessary, change the error-monitoring options (see 
Table 7-4).
3. When you finish setting the configuration options, click OK.
Table 7-4:  Error Monitoring Options 
FieldDescription
Interval Time Number of minutes, from 1 to 270 (12 hours), between error 
checks when error monitoring is turned on.
User Id You log in to a storage system before you can monitor it in the 
background. Enter the user ID and corresponding password that 
have been defined for this storage system. To monitor storage 
systems without accounts, leave these fields blank. Password 
						

							Managing Storage Systems7–11
Hitachi Storage Navigator Modular 2 User’s Guide
Configuring email notifications
You can configure Navigator 2 to send email notifications when errors are 
detected. To enable this function, complete the Set up E-mail Alert window 
in the Initial (Setup) Array wizard. This wizard ran automatically when you 
started Navigator 2 for the first time. If you did not enable this feature at 
that time, or if you enabled it and now want to disable it, run the Initial 
(Setup) Array wizard manually by clicking the name of a storage system 
under the Array Name column in the Arrays window and then clicking 
Initial Setup in the Common Array Tasks menu.
Running error monitoring
After configuring the error-monitoring options, you want to run the error 
monitoring feature.
To run the error monitoring feature
1. In the Arrays window, click the checkbox next to the names of the 
storage systems you want to monitor for errors. To monitor all systems, 
click the topmost checkbox n the left column of the Arrays window.
2. Click the Run Error Monitoring button. Error Monitoring in the 
Arrays window displays Running and shows the monitoring interval. 
The default interval can be changed in the Edit Error Monitoring Options 
window (see Configuring error monitoring options on page 7-10).
3. To turn off error monitoring, click Stop Error Monitoring.
Arrays to Test Use this test to check your settings. Click to the left of a storage 
system name in the Arrays for Monitoring and Result of Access 
Test. This storage system will be used for the test. Click Test 
Account to start the test When you click Test Account, the test 
begins immediately and runs once and a message window 
appears during the test. When the test ends, any errors for the 
selected storage system appear in the window.
Table 7-4:  Error Monitoring Options (Continued)
FieldDescription
NOTE:When error monitoring is enabled, the following functions are 
disabled in the Arrays window: 
 
• Reboot Array 
•  Show & Configure Array 
• Add Array 
• Edit Array 
• Remove Array 
•  Edit Error Monitoring Options 
• Refresh Information 
 
To use any of these functions, you must first stop error monitoring. 
						

							7–12Managing Storage Systems
Hitachi Storage Navigator Modular 2 User’s Guide
Error messages
If a storage system error occurs with error monitoring running, a log file is 
generated that contains error information. The information is stored in a file 
named errlog.txt in the Navigator 2 installation folder. The error log text 
file uses the following format: 
Day, Month hh:mm:ss yyyy//
Table 7-5 lists the log messages for Hitachi AMS 2000 storage systems.
Table 7-5:  Log Messages 
MessageDescription
ARRAY Hitachi Storage Navigator Modular 2 
Interface error occurred. A communication error occurred 
between the storage system and 
Navigator 2.
ARRAY Warning. General array warning
ARRAY CONTROLLER Detached. Position 
CONTROLLER No.xx.Controller warning
ARRAY Cache Memory Alarm. Cache memory warning
ARRAY Interface Board Alarm. Position 
CONTROLLER No.xx Interface Board No.yy.Interface board warning
ARR AY Fan A larm. Position CTU Fan No. yy. Fan warning
ARRAY Fan Alarm. Position Unit No.xx Fan No.yy. Fan warning
ARRAY Cache Backup Circuit Alarm. Battery backup circuit warning
ARRAY AC Power Supply Failure. Position CTU AC 
Power No.yy.AC power supply warning
ARRAY AC Power Supply Failure. Position Unit No.xx 
AC Power No.yy.AC power supply warning
ARRAY DC Power Supply Failure. Position CTU DC 
Power No.yy.DC power supply warning
ARRAY DC Power Supply Failure. Position Unit No.xx 
DC Power No.yy.DC power supply warning
ARRAY Battery Alarm. Position Battery No.xx. Battery warning
ARRAY Additional Battery Alarm. Position Additional 
Battery No.xx.Additional battery warning
ARRAY ENC Alarm. Position CTU ENC No.yy. Enclosure warning
ARRAY ENC Alarm. Position Unit No.xx ENC No.yy. Enclosure warning
ARRAY Path Alarm. Remote path warning
ARRAY Host Connector Alarm. Position CONTROLLER 
No.xx Port No.yy Host Connector No.zz.Host connector warning
ARRAY Drive Detached. Drive warning
ARRAY Detached Drive Position Unit No.xx HDU 
No.yy.Drive warning 
						

							Managing Storage Systems7–13
Hitachi Storage Navigator Modular 2 User’s Guide
Managing alerts and events
W h e n  y o u  s e l e c t  a n  a r r a y  f r o m  t h e  A r r a y s  w i n d o w,  t h e  c e n t e r  p a n e  d i s p l a y s  
the Alerts & Events option (see Figure 7-7). Clicking this option displays 
the Alerts & Events window. This window contains the following two tabs:
• Alert Parts displays alerts if there is a hardware problem (see Figure 7-
8 on page 7-14).
• Event Log displays all events related to the selected storage system, 
such as formatting, microprogram downloads and installations, errors, 
and messages that the system is ready for use (see Figure 7-9 on 
page 7-14).
Figure 7-7:  Alerts & Events Option
Alerts & Events 
						

							7–14Managing Storage Systems
Hitachi Storage Navigator Modular 2 User’s Guide
Figure 7-8:  Example of the Alert Parts Tab
Figure 7-9:  Example of the Event Log Tab 
						

							Managing RAID Groups8–1
Hitachi Storage Navigator Modular 2 User’s Guide
8
Managing RAID Groups
This chapter describes how to manage RAID group on Hitachi 
AMS 2000 Family storage systems using Navigator 2.
The topics covered in this chapter are:
ˆOverview
ˆDisplaying the RAID Groups tab
ˆCreating a RAID group
ˆExpanding RAID groups
ˆDisplaying detailed RAID group properties
ˆExecuting a RAID group spin-up or spin-down
ˆChanging RAID group expansion priority
ˆFiltering RAID groups
ˆDeleting RAID groups 
						

							8–2Managing RAID Groups
Hitachi Storage Navigator Modular 2 User’s Guide
Overview
A RAID group can be considered as a RAID container for data protection. It 
can contain single or multiple parity groups. The parity groups are partitions 
of the RAID container. When you set up a RAID group, you can specify 
multiple parity groups for the RAID group that enhances performance and 
provides better drive access and drive rebuilding capability.
Logical units are created in a RAID group or a Dynamic Provisioning (DP) 
pool. Additionally, they are used in assigning a host group or isCSI target. 
Multiple LUNs can be created in each RAID group, and ported to the same 
or different servers. This allows granularity in LUN sizes being obtained from 
the RAID group.
If each partition (parity group) is assigned to the same host, there should 
be no contention for the RAID group’s disk resources. This speeds up both 
read and write operations to the disk, and considerably improves system 
performance. However, instead of creating multiple parity groups, you can 
use the entire RAID group as a single parity group and create one large 
logical unit.
Displaying the RAID Groups tab
All RAID group activities described in this chapter, except spinning up or 
spinning down disks in selected RAID groups, are performed from the RAID 
Groups tab in the Logical Units window. 
To display the RAID Groups tab
1. In the Arrays window, click a storage system whose RAID groups you 
want to view or configure.
2. In the center pane, click Groups > Logical Units. The Logical Units 
window appears.
3. In the Logical Units window, click the RAID Groups tab. Figure 8-1 on 
page 8-3 shows an example of RAID groups in the RAID Groups tab.