2V0-620 · Question #47
What are two possible causes of Storage Distributed Resource Scheduler (SDRS) being disabled on one or more virtual machine disks in a datastore cluster? (Choose two.)
The correct answer is B. The virtual machine is a template. D. The disk is a CD-ROM/ISO file. SDRS is automatically disabled per-disk for virtual machine templates and for CD-ROM/ISO virtual devices because neither can be migrated by Storage vMotion.
Question
What are two possible causes of Storage Distributed Resource Scheduler (SDRS) being disabled on one or more virtual machine disks in a datastore cluster? (Choose two.)
Options
- AThe virtual machine has vSphere Fault Tolerance disabled.
- BThe virtual machine is a template.
- CThe virtual machine swap file is on a shared datastore.
- DThe disk is a CD-ROM/ISO file.
How the community answered
(48 responses)- A4% (2)
- B81% (39)
- C15% (7)
Why each option
SDRS is automatically disabled per-disk for virtual machine templates and for CD-ROM/ISO virtual devices because neither can be migrated by Storage vMotion.
It is Fault Tolerance being enabled (not disabled) that causes SDRS automation to be disabled on VM disks, because FT-enabled VMs cannot use Storage vMotion.
Virtual machine templates cannot be powered on or migrated via Storage vMotion, so SDRS has no ability to rebalance their disks and disables automation for them.
Having the VM swap file on a shared datastore does not disable SDRS on the virtual machine's disks.
CD-ROM and ISO-backed virtual devices are not standard VMDK files and cannot be moved by SDRS, so Storage DRS excludes those disk entries from its automation.
Concept tested: Storage DRS automation exclusion conditions for VM disks
Source: https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.resmgmt.doc/GUID-5E2D2D3A-9C8F-4A3B-9B6E-6D6D6D6D6D6D.html
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