About Your System 23Using USB Diskette or USB DVD/CD DrivesEach blade has USB ports on the front of the blade which allows you toconnect a USB diskette drive, USB flash drive, USB DVD/CD drive, keyboard,or mouse. (PowerEdge M905 and M805 blades have three USB ports;PowerEdge M605 and M600 blades have two ports.) The USB drives can beused to configure the blade.NOTICE: The system supports only Dell-branded USB 2.0 drives. The drive must behorizontal and level to operate properly. Use the optional external drive storage trayto support the drive while in use.NOTE: If the drive must be designated as the boot drive, connect the USB drive,restart the system, then enter the System Setup Program and set the drive as first inthe boot sequence (see "Using the System Setup Program" on page 79). The USBdevice will be displayed in the boot order setup screen only if it is attached to thesystem before you run the System Setup program.You can also select the boot device by pressing the key during system startupand selecting a boot device for the current boot sequence.Hard-Drive Features• The PowerEdge M805 and M905 blades support one or two hot-pluggable2.5 inch SAS hard drives.• The PowerEdge M600 and M605 blades support one or two hot-pluggable2.5-inch SATA hard drives or one or two 2.5 inch SAS hard drives.NOTE: SAS and SATA hard drives cannot be mixed within a blade.NOTE: SATA hard drives are not hot pluggable with the SATA repeaterdaughter card.Hot-plug drive operation is supported if an optional RAID controller cardis installed in the blade.On blades with a diskless configuration, no disk controller is included in theblade, but hard-drive blanks and the internal storage backplane must bepresent to maintain proper airflow.See Figure 1-8 and Table 1-4 for information on the hard-drive indicators.Different patterns are displayed as drive events occur in the system.NOTICE: The blade must have a hard drive or a hard-drive blank installed in eachhard-drive bay.
