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openshift-docs/modules/virt-enabling-persistentreservation-feature-gate.adoc
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// Module included in the following assemblies:
//
// * * virt/virtual_machines/virtual_disks/virt-configuring-shared-volumes-for-vms.adoc
:_mod-docs-content-type: PROCEDURE
[id="virt-enabling-persistentreservation-feature-gate_{context}"]
= Enabling the PersistentReservation feature gate
[role="_abstract"]
You can enable the SCSI `persistentReservation` feature gate and allow a LUN-backed block mode virtual machine (VM) disk to be shared among multiple virtual machines.
The `persistentReservation` feature gate is disabled by default. You can enable the `persistentReservation` feature gate by using the web console or the command line.
.Prerequisites
* Cluster administrator privileges are required.
* The volume access mode `ReadWriteMany` (RWX) is required if the VMs that are sharing disks are running on different nodes. If the VMs that are sharing disks are running on the same node, the `ReadWriteOnce` (RWO) volume access mode is sufficient.
* The storage provider must support a Container Storage Interface (CSI) driver that uses Fibre Channel (FC), Fibre Channel over Ethernet (FCoE), or iSCSI storage protocols.