Chapter 8. Configuring Units136 3ware 9550SX Serial ATA RAID Controller User GuideSpecifying a Hot Spare through 3BM1 On the main 3BM screen, in the list of Available Drives, highlight thedrive you want to use.2 Type s to specify that the selected drive will be the hot spare.You’ll see the words “Hot Spare” appear next to the drive in the AvailableDrives list.Figure 60. Hot Spare IndicatedIf a hot spare is already enabled, you can disable it by pressing s again.3 If you are finished making changes in 3BM, press F8 to save the changesand exit.Note: If the drive you designated as a spare is not large enoughto replace a failed drive in a fault-tolerant unit, or if there is nota fault-tolerant unit for the spare to support, 3BM will notifyyou.