6.0.1

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By default, the PSA claim rule 101 masks Dell array pseudo devices. Do not delete this rule, unless you
want to unmask these devices.
List Multipathing Claim Rules for the Host
Use the esxcli command to list available multipathing claim rules.
Claim rules indicate which multipathing plug-in, the NMP or any third-party MPP, manages a given
physical path. Each claim rule identies a set of paths based on the following parameters:
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Vendor/model strings
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Transportation, such as SATA, IDE, Fibre Channel, and so on
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Adapter, target, or LUN location
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Device driver, for example, Mega-RAID
In the procedure, --server=server_name species the target server. The specied target server prompts you
for a user name and password. Other connection options, such as a conguration le or session le, are
supported. For a list of connection options, see Geing Started with vSphere Command-Line Interfaces.
Prerequisites
Install vCLI or deploy the vSphere Management Assistant (vMA) virtual machine. See Geing Started with
vSphere Command-Line Interfaces. For troubleshooting, run esxcli commands in the ESXi Shell.
Procedure
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Run the esxcli --server=server_name storage core claimrule list --claimrule-class=MP command
to list the multipathing claim rules.
Example: Sample Output of the esxcli storage core claimrule list Command
Rule Class Rule Class Type Plugin Matches
MP 0 runtime transport NMP transport=usb
MP 1 runtime transport NMP transport=sata
MP 2 runtime transport NMP transport=ide
MP 3 runtime transport NMP transport=block
MP 4 runtime transport NMP transport=unknown
MP 101 runtime vendor MASK_PATH vendor=DELL model=Universal Xport
MP 101 file vendor MASK_PATH vendor=DELL model=Universal Xport
MP 200 runtime vendor MPP_1 vendor=NewVend model=*
MP 200 file vendor MPP_1 vendor=NewVend model=*
MP 201 runtime location MPP_2 adapter=vmhba41 channel=* target=* lun=*
MP 201 file location MPP_2 adapter=vmhba41 channel=* target=* lun=*
MP 202 runtime driver MPP_3 driver=megaraid
MP 202 file driver MPP_3 driver=megaraid
MP 65535 runtime vendor NMP vendor=* model=*
This example indicates the following:
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The NMP claims all paths connected to storage devices that use the USB, SATA, IDE, and Block SCSI
transportation.
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You can use the MASK_PATH module to hide unused devices from your host. By default, the PSA
claim rule 101 masks Dell array pseudo devices with a vendor string of DELL and a model string of
Universal Xport.
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The MPP_1 module claims all paths connected to any model of the NewVend storage array.
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The MPP_3 module claims the paths to storage devices controlled by the Mega-RAID device driver.
Chapter 17 Understanding Multipathing and Failover
VMware, Inc. 195