# Support for SAN RDMs 

**URL:** <https://forum.opennebula.io/t/support-for-san-rdms/10312>\
**Category:** Product Support\
**Created:** [February 7, 2022, 12:20pm UTC](https://forum.opennebula.io/t/support-for-san-rdms/10312 "2022-02-07T12:20:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mamo](https://avatars.discourse-cdn.com/v4/letter/m/90ced4/32.png) [@Mamo](https://forum.opennebula.io/u/Mamo)\
**Post date:** [February 7, 2022, 12:20pm UTC](https://forum.opennebula.io/t/support-for-san-rdms/10312/1 "2022-02-07T12:20:40Z")

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Please, describe the problem here and provide additional information below (if applicable)

We are having a VMs which are having RDM disks attached to Windows Server 2016 VMs  
When ever we import a VM which has a RDM attached to Open Nebula, during reboot, the RDM is getting removed.  
How to add a RDM disk to VM through Open Nebula ?  
Please help!!!

**Versions of the related components and OS (frontend, hypervisors, VMs):**

Opennebula latest version(6.0.2)

**Steps to reproduce:**

**Current results:**

**Expected results:**

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**Author:** ![ruben](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/ruben/32/19_2.png) [@ruben](https://forum.opennebula.io/u/ruben)\
**Post date:** [February 8, 2022, 10:49am UTC](https://forum.opennebula.io/t/support-for-san-rdms/10312/2 "2022-02-08T10:49:51Z")

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I assume you are using this datastore [Raw Device Mapping (RDM) Datastore — OpenNebula 6.2.0 documentation](https://docs.opennebula.io/6.2/open_cluster_deployment/storage_setup/dev_ds.html)

A reboot operation should not modify the KVM definition of the VM, could you share your VM template (onevm show -j \<vm\_id)

Cheers