Important Information 5During normal backup application operation, the application sends aPrevent Allow to the library. The purpose of this command is to avoidchanges that confuse the backup application. When the user attempts tomove/export media via the library RMU, the library displays a Noresource selected error message. This message does not describethe error. When the user attempts the same move from the OCP thelibrary message displayed is Move prevented by host.• Key path diagnostics ethernet test fails when the library is set to IPv4only stack and the user attempts to use an IPv6 EKM address, or thelibrary is set to IPv6 only stack and the user attempts to use an IPv4 EKMAddress.In order to successfully configure different IP versions for the library andthe EKM server, the library must be configured for dual stack mode(IPv4+IPv6).• Key path diagnostics does not list drives that are not set for LME in thetable.The drive table does not list drives that are not setup for LME. Thisincludes all LT03 drives and LT04 drives set for None or AME encryption.• RMU Access via Unique Local (ULA) IPv6 addresses do not autotimeout.The RMU will not logout due to inactivity of the web browser. Oncompletion of configuration or management activities, to ensure theunit is secure, the user must logout by selecting the Logout button inthe RMU.• Drives installed in the TL4000/TL2000 do not prevent access to the driveconfiguration or firmware upgrades when media is loaded into the drive.The user must remove all media in the drives when making changes to thedrive configuration or updating the firmware. In some instances failure toremove media will result in a hung unit.