Managing Data Storage Devices 6-1Chapter 6Managing Data StorageDevices6-This chapter discusses the following topics:• ‘‘CD-ROM Drives”• ‘‘USB Storage Devices”• ‘‘Additional Resources”Chapter 5 explains basic storage device definition and the configuration andmanagement of the internal disk drives embedded in CPU-I/O enclosures. This chapterbriefly discusses other data storage devices that are included with or can be optionallyattached to the system.CD-ROM DrivesAn ftServer system supports two CD-ROM or DVD+RW drives, which may appear asthe following names on the system, depending on whether a CD-ROM or DVD writer isin the drive:• In CPU-0, I/O-10: /dev/cdrom, /dev/dvdwriter, /dev/hde• In CPU-1, I/O-11: /dev/cdrom1, /dev/dvdwriter1, /dev/hdiUSB Storage DevicesUSB storage devices, including floppy-disk and solid-state storage, are supportedthrough the SCSI driver. These devices appear as SCSI devices. You can getinformation about these devices by examining the file /proc/scsi/scsi, by runningthe command lsusb, or by examining the system log (/var/log/messages).When you connect a USB device to the USB bus, the SCSI driver scans it once andassigns a name (for example, sde). This is the device’s internal name that is displayedby commands such as /proc/mdstat and in the system log. When mounting andunmounting a USB device, do not use this name. Instead, use the name assigned bythe udev command. This name has the format sd*usb. For example, sd1usb is thename of the device attached to port 1 of the root USB hub.
