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Knowledge Base

Identifying Raw Device Mappings (RDMs) using the vSphere Client (1004814)

Last Updated: 5/14/2021Categories: How toTotal Views: 22639Language:
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Purpose

This article provides steps to identify Raw Device Mappings (RDMs) attached to registered virtual machines using the vSphere Client.

Resolution

To identify RDMs using the vSphere Client:

Determine which RDM LUNs are part of an MSCS cluster. From the vSphere Client, select a virtual machine that has a mapping to the MSCS cluster RDM devices.

Edit your virtual machine settings and navigate to your Mapped RAW LUNs. In this example, Hard disk 2:

In the Physical, there is the specification of the device in use as RDM (that is, the vml ID).

Take note of the vml ID, which is a globally unique identifier for your shared device.

Identify the naa.id for this vml through the command esxcli storage core device list

esxcli storage core device list

naa.6589cfc000000a17ac02aae02067e747
Display Name: FreeNAS iSCSI Disk (naa.6589cfc000000a17ac02aae02067e747)
Has Settable Display Name: true
Size: 40960
Device Type: Direct-Access
Multipath Plugin: NMP
Devfs Path: /vmfs/devices/disks/naa.6589cfc000000a17ac02aae02067e747
Vendor: FreeNAS
Model: iSCSI Disk
Revision: 0123
SCSI Level: 6
Is Pseudo: false
Status: degraded
Is RDM Capable: true
Is Local: false
Is Removable: false
Is SSD: false
Is VVOL PE: false
Is Offline: false
Is Perennially Reserved: false
Queue Full Sample Size: 0
Queue Full Threshold: 0
Thin Provisioning Status: unknown
Attached Filters:
VAAI Status: supported
Other UIDs: vml.010001000030303530353630313031303830310000695343534920
Is Shared Clusterwide: true
Is SAS: false
Is USB: false
Is Boot Device: false
Device Max Queue Depth: 128
No of outstanding IOs with competing worlds: 32
Drive Type: unknown
RAID Level: unknown
Number of Physical Drives: unknown
Protection Enabled: false
PI Activated: false
PI Type: 0
PI Protection Mask: NO PROTECTION
Supported Guard Types: NO GUARD SUPPORT
DIX Enabled: false
DIX Guard Type: NO GUARD SUPPORT
Emulated DIX/DIF Enabled: false

Related Information

Identifying disks when working with VMware ESXi

Identifying virtual machines with Raw Device Mappings (RDMs) using PowerCLI

Raw Device Mapping for local storage

Detectable by VMware SkylineTM

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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