System information

Example B-2. Sample Output of the vicfg-mpath Command

MPP_1

MPP_2

MPP_3

MASK_PATH

NMP

Display SATPs for the Host

Use the vSphere CLI to list all VMware NMP SATPs loaded into the system.

Procedure

To list all VMware SATPs, run the following command.

esxcli nmp satp list

For each SATP, the command displays information that shows the type of storage array or system this SATP

supports and the default PSP for any LUNs using this SATP.

Keep in mind the following:

If no SATP is assigned to the device by the claim rules, the default SATP for iSCSI or FC devices is

VMW_SATP_DEFAULT_AA. The default PSP is VMW_PSP_FIXED.

If VMW_SATP_ALUA is assigned to a specific storage device, but the device is not ALUA-aware, there

is no claim rule match for this device. In this case, the device is claimed by the default SATP based on the

device's transport type.

The default PSP for all devices claimed by VMW_SATP_ALUA is VMW_PSP_MRU. The VMW_PSP_MRU

selects an active/optimized path as reported by the VMW_SATP_ALUA, or an active/unoptimized path

if there is no active/optimized path. This path is used until a better path is available (MRU). For example,

if the VMW_PSP_MRU is currently using an active/unoptimized path and an active/optimized path

becomes available, the VMW_PSP_MRU will switch the current path to the active/optimized one.

Example B-3. Sample Output of the esxcli nmp satp list Command

Name Default PSP Description

VMW_SATP_ALUA_CX VMW_PSP_FIXED Supports EMC CX that use the ALUA protocol

VMW_SATP_SVC VMW_PSP_FIXED Supports IBM SVC

VMW_SATP_MSA VMW_PSP_MRU Supports HP MSA

VMW_SATP_EQL VMW_PSP_FIXED Supports EqualLogic arrays

VMW_SATP_INV VMW_PSP_FIXED Supports EMC Invista

VMW_SATP_SYMM VMW_PSP_FIXED Supports EMC Symmetrix

Display NMP Storage Devices

Use vSphere CLI to list all storage devices controlled by the VMware NMP and display SATP and PSP

information associated with each device.

Procedure

1 To list all storage devices, run the following command:

esxcli nmp device list

2 To show information for a specific device, run the following:

esxcli nmp device list -d

<device_ID>

Appendix B Managing Storage Paths and Multipathing Plugins

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