Scenario: A Citrix Administrator is modifying a vDisk. The administrator finishes making changes to the vDisk and promotes it to production. Now, only one machine is working with the new vDisk. In whi

Test mode is a vDisk status designator used for validating changes before full production release, and does not itself enable multi-device streaming.

Private Image mode gives a single target device exclusive read-write access to the vDisk, which is the reason only one machine is currently working - this mode must be changed.

Standard Image mode configures the vDisk as read-only and uses a write cache (local disk, RAM, or server-side) per target device to handle any write operations, allowing an unlimited number of target devices to stream and boot from the same vDisk concurrently. This is the fundamental mode designed for shared, multi-device delivery in a PVS environment. Without Standard mode, only a single device can access the vDisk exclusively.

Production is a vDisk status or version property indicating the vDisk is approved for end-user use, but it does not define the access mode that governs how many devices can simultaneously boot from it.

Maintenance mode is used when an administrator needs to make changes to the vDisk and grants exclusive write access to a single maintenance device, preventing other devices from booting it.