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FreeBSD Handbook

Chapter 12 Storage

12.2 Device Names

The following is a list of physical storage devices supported in FreeBSD, and the device names associated with them.

Table 12-1. Physical Disk Naming Conventions

Drive type	Drive device name
IDE hard drives	`ad`
IDE CDROM drives	`acd`
SCSI hard drives and USB Mass storage devices	`da`
SCSI CDROM drives	`cd`
Assorted non-standard CDROM drives	`mcd` for Mitsumi CD-ROM, `scd` for Sony CD-ROM, `matcd` for Matsushita/Panasonic CD-ROM
Floppy drives	`fd`
SCSI tape drives	`sa`
IDE tape drives	`ast`
Flash drives	`fla` for DiskOnChip Flash device
RAID drives	`myxd` for Mylex, and `amrd` for AMI MegaRAID, `idad` for Compaq Smart RAID.

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