vSphere Storage - ESXi 5.1 - Documentation - VMware
vSphere Storage - ESXi 5.1 - Documentation - VMware
vSphere Storage - ESXi 5.1 - Documentation - VMware
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This example indicates the following:<br />
n The NMP claims all paths connected to storage devices that use the USB, SATA, IDE, and Block SCSI<br />
transportation.<br />
n You can use the MASK_PATH module to hide unused devices from your host. By default, the PSA claim<br />
rule 101 masks Dell array pseudo devices with a vendor string of DELL and a model string of Universal<br />
Xport.<br />
n The MPP_1 module claims all paths connected to any model of the NewVend storage array.<br />
n The MPP_3 module claims the paths to storage devices controlled by the Mega-RAID device driver.<br />
n Any paths not described in the previous rules are claimed by NMP.<br />
n The Rule Class column in the output describes the category of a claim rule. It can be MP (multipathing<br />
plug-in), Filter, or VAAI.<br />
n The Class column shows which rules are defined and which are loaded. The file parameter in the Class<br />
column indicates that the rule is defined. The runtime parameter indicates that the rule has been loaded<br />
into your system. For a user-defined claim rule to be active, two lines with the same rule number should<br />
exist, one line for the rule with the file parameter and another line with runtime. Several low numbered<br />
rules, have only one line with the Class of runtime. These are system-defined claim rules that you cannot<br />
modify.<br />
Display Multipathing Modules<br />
Use the esxcli command to list all multipathing modules loaded into the system. Multipathing modules<br />
manage physical paths that connect your host with storage.<br />
In the procedure, --server=server_name specifies the target server. The specified target server prompts you<br />
for a user name and password. Other connection options, such as a configuration file or session file, are<br />
supported. For a list of connection options, see Getting Started with <strong>vSphere</strong> Command-Line Interfaces.<br />
Prerequisites<br />
Install vCLI or deploy the <strong>vSphere</strong> Management Assistant (vMA) virtual machine. See Getting Started with<br />
<strong>vSphere</strong> Command-Line Interfaces. For troubleshooting , run esxcli commands in the <strong>ESXi</strong> Shell.<br />
Procedure<br />
u To list multipathing modules, run the following command:<br />
esxcli --server=server_name storage core plugin list --plugin-class=MP<br />
This command typically shows the NMP and, if loaded, the MASK_PATH module. If any third-party MPPs<br />
have been loaded, they are listed as well.<br />
Display SATPs for the Host<br />
Use the esxcli command to list <strong>VMware</strong> NMP SATPs loaded into the system. Display information about the<br />
SATPs.<br />
In the procedure, --server=server_name specifies the target server. The specified target server prompts you<br />
for a user name and password. Other connection options, such as a configuration file or session file, are<br />
supported. For a list of connection options, see Getting Started with <strong>vSphere</strong> Command-Line Interfaces.<br />
Prerequisites<br />
Chapter 20 Understanding Multipathing and Failover<br />
Install vCLI or deploy the <strong>vSphere</strong> Management Assistant (vMA) virtual machine. See Getting Started with<br />
<strong>vSphere</strong> Command-Line Interfaces. For troubleshooting , run esxcli commands in the <strong>ESXi</strong> Shell.<br />
<strong>VMware</strong>, Inc. 207