Veritas NetBackup™ Virtual Appliance Documentation
- Getting to know the NetBackup Virtual Appliance
- NetBackup Virtual Appliance product description
- Preparing to deploy the appliance
- Deploying and configuring the appliance
- How to deploy and configure a NetBackup Virtual Appliance combined master and media server
- How to deploy and configure a NetBackup Virtual Appliance media server
- How to deploy and configure a NetBackup Virtual Appliance master server
- How to deploy and configure a NetBackup Virtual Appliance CloudCatalyst
- How to deploy and configure a NetBackup Virtual Appliance combined master and media server
- Post initial configuration procedures
- Appliance common tasks
- Storage management
- About NetBackup Virtual Appliance storage configuration
- About viewing storage space information using the Show command
- About NetBackup Virtual Appliance storage configuration
- Network connection management
- Managing users
- About authenticating LDAP users
- About authenticating Active Directory users
- About authenticating Kerberos-NIS users
- About user authorization on the NetBackup Virtual Appliance
- Creating NetBackup administrator user accounts
- Using the appliance
- About configuring Host parameters for your appliance on the NetBackup Virtual Appliance
- About Copilot functionality and Share management
- About NetBackup Virtual Appliance as a VMware backup host
- About running NetBackup commands from the appliance
- About mounting a remote NFS
- About Auto Image Replication from a NetBackup Virtual Appliance
- Monitoring the appliance
- About SNMP
- About Call Home
- Appliance security
- About Symantec Data Center Security on the NetBackup Virtual Appliance
- Setting the appliance login banner
- Upgrading the appliance
- About upgrading to NetBackup Virtual Appliance software version 3.1.2
- Requirements and best practices for upgrading NetBackup appliances
- Methods for downloading appliance software release updates
- Appliance restore
- Decommissioning and Reconfiguring
- Troubleshooting
- About disaster recovery
- About NetBackup support utilities
- Appliance logging
- Commands overview
- Appendix A. Appliance commands
- Appendix B. Manage commands
- Appendix C. Monitor commands
- Appendix D. Network commands
- Appendix E. Reports commands
- Appendix F. Settings commands
- Appendix G. Support commands
Name
Main > Support > iostat — Monitor system input and output device loading
SYNOPSIS
iostat help
iostat run
iostat [options] [interval] [count]
DESCRIPTION
The iostat command is a Linux command that you can use to monitor system input and output devices. The command enables you to observe the time that the devices are active in relation to their average transfer rates. This command generates reports that you can use to change the system configuration to better balance the input and the output load between physical disks. The iostat command generates reports continuously.
Note:
You must run the iostat run command before you can use the available options that are supported for the iostat command.
OPTIONS
- iostat help
View the help information of the command.
- iostat run
Prompts you to enter the available options that are supported.
- [options]
The following list describes the available options that are supported:
-c
Display the CPU utilization report.
-d
Display the device utilization report.
-N
Display the registered device mapper names for any device mapper devices.
-n
Display the network file system (NFS) report. This option works only with kernel 2.6.17 and later.
-h
Make the NFS report that is displayed by option -n easier to read.
-k
Display statistics in kilobytes per second instead of blocks per second.
-m
Display statistics in megabytes per second instead of blocks or kilobytes per second.
-t
Print the time for each report displayed.
-V
Print the version number then exit.
-x
Display the extended statistics.
-p [ { device [,...] | ALL } ]
The -p option displays the statistics for block devices and all their partitions that the system uses. If a device name is entered on the command line, then the statistics for it and all of its partitions are displayed. The ALL keyword indicates that statistics have to be displayed for all the block devices and partitions defined by the system. That includes those that have never been used.
[device [,...] | ALL]
If a device name is entered on the command line, then the statistics for it and all of its partitions are displayed. The ALL keyword indicates that statistics have to be displayed for all the block devices and partitions defined by the system. That includes those that have never been used.
- [interval]
The interval parameter specifies the amount of time in seconds between each report.
The first report contains statistics for the time since system startup. Each subsequent report contains statistics that are collected during the interval since the previous report.
- [count]
The count parameter can be specified with the interval parameter.
If the count parameter is specified, the value of count determines the number of reports that are generated at interval seconds apart.
EXAMPLES
The following example shows how to use the iostat command:
abc123.Support> iostat run Please enter options: iostat -c
The following example shows how to use the interval parameter:
abc123.Support> iostat run Please enter options: iostat -c 1