Iosxrvk9demo613qcow2 -

: Indicates the IOS XRv 64-bit software package with "k9" (strong encryption) capabilities.

: A classic choice that uses the QEMU binary to launch the image. iosxrvk9demo613qcow2

: The file format. QCOW2 is the native format for QEMU/KVM and is widely used because it only takes up the disk space actually used by the OS, rather than the full allocated size. Use Cases for Version 6.1.3 : Indicates the IOS XRv 64-bit software package

Understanding the naming convention helps in managing your virtual library: iosxrvk9demo613qcow2