What does the “sd” in “/dev/sdX” stand for?
You are correct. sd* means SCSI Disk. Dell has a full glossary available in multiple languages, and this is a page I generally send people to when they have questions about the Linux device naming convention.
In addition to sd*, there are:
-
dev/fd*- Floppy drives -
dev/scd*or/dev/sr*- SCSI CD-ROMs -
dev/hd*- IDE drives -
dev/mmcblk*- SDHC card on PCMCIA