It is possible for a logical library to have no control path drives. To disable a control path, use  the same method that is shown in Figure 4-101, but select  Actions  Disable Control Path ,  as shown in Figure 4-102. The use of multiple control paths for any single configured logical library provides the  following benefits: Note:  Use the Path Failover feature (Feature Code 1682) to enable the host device driver  to send a command again to an alternate control path in the same logical library.  Configuration of Path Failover is performed in the host device driver. Access to the logical library is on a first-come, first-served basis. Each control path for a  logical library can accept commands while the library is in use by another control path. Control path drives cannot be removed from a logical library that is performing jobs. If the  logical library is not actively in use, control path drives can be removed from a logical library  only after all non-control path drives are removed or a different control path drive is assigned. 266  IBM TS4500 R6 Tape Library Guide GLYPH<SM590000> Provides communication failover so that if one control path fails, host communication for  the entire library is not lost GLYPH<SM590000> Allows access to the logical library by multiple servers Figure 4-101 Enable Control Path Figure 4-102 Disable Control Path