19.2. Device Names
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## 19.2. Device Names

The following is a list of physical storage devices supported in FreeBSD and their associated device names.

Table 19.1. Physical Disk Naming Conventions

Drive type | Drive device name
--- | ---
IDE hard drives | `ad` or `ada`
IDE CD-ROM drives | `acd` or `cd`
SATA hard drives | `ad` or `ada`
SATA CD-ROM drives | `acd` or `cd`
SCSI hard drives and USB Mass storage devices | `da`
SCSI CD-ROM drives | `cd`
Assorted non-standard CD-ROM drives | `mcd` for Mitsumi CD-ROM and `scd` for Sony CD-ROM devices
Floppy drives | `fd`
SCSI tape drives | `sa`
IDE tape drives | `ast`
Flash drives | `fla` for DiskOnChip® Flash device
RAID drives | `aacd` for Adaptec® AdvancedRAID, `mlxd` and `mlyd` for Mylex®, `amrd` for AMI MegaRAID®, `idad` for Compaq Smart RAID, `twed` for 3ware® RAID.

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