RiOS v9.0 provides a mechanism to convert the QoS configuration of earlier RiOS versions into the format of a RiOS v9.0 configuration. The conversion process is transparent to and happens during the first boot-up of RiOS v9.0 on a SteelHead.

The QoS concepts and resulting configuration in RiOS v9.0 are very different from those of earlier RiOS versions. In some cases it can be easier to create a new QoS configuration in RiOS v9.0, than to migrate an existing QoS configuration. You must handle any migration of an advanced QoS configuration from earlier RiOS versions with care.

Riverbed highly recommends that you closely analyze a migrated QoS configuration after you upgrade a SteelHead to RiOS v9.0.

For more information about migrations, see RiOS 9.0 QoS Migration at https://splash.riverbed.com/docs/DOC-5443.