Oracle Linux or Oracle Solaris Sessions - You can access the device through the device links and nodes automatically created on the Sun Ray server. See Section 15.4, “Accessing Serial Devices and USB Printers” for details. USB mass storage devices are automatically mounted, which is described in Section 15.5, “Accessing USB Mass Storage Devices”.

USB-to-serial adapters are not accessible through the generated device nodes. You must use USB redirection in a Windows session to access a serial device connected through a USB-to-serial adapter.

Windows Sessions Using USB Redirection - USB redirection is the recommended way to access USB devices connected to Sun Ray Clients when using Windows sessions. USB device redirection requires that the USB device redirection component is installed on the Windows system. See Section 17.6, “USB Device Redirection” for details. Although most of the information in this chapter is not applicable when using USB redirection, device services still need to be enabled.

Windows Sessions Using Logical Device Mapping - Without USB redirection, you can use the -r option of the uttsc command to create a logical device mapping to the device being managed on the Sun Ray server, as described in this chapter. For example, the -r disk:drive=path enables you to create a logical device mapping to a USB mass storage device, where path is the mounted disk located at /tmp/SUNWut/mnt/user on the Sun Ray server. Other devices, such as serial devices, can also be configured. For details about accessing serial devices when using the Windows connecter, see Section 17.17, “Accessing Serial Devices”.

Using logical device mapping with USB mass storage devices provides much lower performance on Oracle Linux than Oracle Solaris due to the design of the Linux mass storage subsystem. For Windows sessions, use USB redirection for optimum performance with mass storage devices.