Got it

What's the FusionSphere RDM?

Created: Apr 26, 2022 08:22:29Latest reply: Apr 26, 2022 08:28:22 169 1 0 0 0
  Rewarded HiCoins: 0 (problem resolved)

Hello, everyone!

What's the RDM?  Which OSs support the FusionCompute raw device mapping function?

Thanks in advance!


  • x
  • convention:

Featured Answers
olive.zhao
Admin Created Apr 26, 2022 08:28:22

Hello, friend!

1. What is  RDM?

Raw device mapping (RDM) provides a mechanism for a virtual machine to have direct access to a LUN on the physical storage subsystem (Fibre Channel or iSCSI only). An RDM is a mapping file in a separate VMFS volume that acts as a proxy for a raw physical storage device. The RDM allows a virtual machine to directly access and use the storage device. The RDM contains metadata for managing and redirecting disk access to the physical device.The file gives you some of the advantages of direct access to a physical device while keeping some advantages of a virtual disk in VMFS. As a result, it merges VMFS manageability with raw device access.RDMs can be described in terms such as mapping a raw device into a datastore, mapping a system LUN, or mapping a disk file to a physical disk volume. All these terms refer to RDMs.

2. Which OSs support the FusionCompute RDM function?

You can query the VM OSs supported by FusionSphere by visiting Compatibility Query Service.

For details about the OSs that support the FusionCompute RDM function, see the descriptions of disks that support SCSI (virtio-scsi) listed in FusionSphere SIA Huawei Guest OS Compatibility Guide (KVM Enterprise Virtualization) in the x86 architecture or FusionSphere SIA Huawei Guest OS Compatibility Guide (ARM) in the ARM architecture.

Hope this helps!

View more
  • x
  • convention:

All Answers
olive.zhao
olive.zhao Admin Created Apr 26, 2022 08:28:22

Hello, friend!

1. What is  RDM?

Raw device mapping (RDM) provides a mechanism for a virtual machine to have direct access to a LUN on the physical storage subsystem (Fibre Channel or iSCSI only). An RDM is a mapping file in a separate VMFS volume that acts as a proxy for a raw physical storage device. The RDM allows a virtual machine to directly access and use the storage device. The RDM contains metadata for managing and redirecting disk access to the physical device.The file gives you some of the advantages of direct access to a physical device while keeping some advantages of a virtual disk in VMFS. As a result, it merges VMFS manageability with raw device access.RDMs can be described in terms such as mapping a raw device into a datastore, mapping a system LUN, or mapping a disk file to a physical disk volume. All these terms refer to RDMs.

2. Which OSs support the FusionCompute RDM function?

You can query the VM OSs supported by FusionSphere by visiting Compatibility Query Service.

For details about the OSs that support the FusionCompute RDM function, see the descriptions of disks that support SCSI (virtio-scsi) listed in FusionSphere SIA Huawei Guest OS Compatibility Guide (KVM Enterprise Virtualization) in the x86 architecture or FusionSphere SIA Huawei Guest OS Compatibility Guide (ARM) in the ARM architecture.

Hope this helps!

View more
  • x
  • convention:

Comment

You need to log in to comment to the post Login | Register
Comment

Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
  • Politically sensitive content
  • Content concerning pornography, gambling, and drug abuse
  • Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " User Agreement."

My Followers

Login and enjoy all the member benefits

Login

Block
Are you sure to block this user?
Users on your blacklist cannot comment on your post,cannot mention you, cannot send you private messages.
Reminder
Please bind your phone number to obtain invitation bonus.
Information Protection Guide
Thanks for using Huawei Enterprise Support Community! We will help you learn how we collect, use, store and share your personal information and the rights you have in accordance with Privacy Policy and User Agreement.