SCSI Peripheral Device Type
A SCSI Peripheral Device Type describes the capabilities provided by a SCSI device. It is a five-bit field in the first byte returned in response to an Inquiry Command. [1]
Defined values are:
Value | Device type | Command set | Specification |
---|---|---|---|
00h | Direct-access block device (e.g., magnetic disk) | SBC Direct Access Commands | SCSI Block Commands (SBC) |
01h | Sequential-access device (e.g., magnetic tape) | SSC Sequential Access Commands | SCSI Stream Commands (SSC) |
02h | Printer device | SSC Printer Commands | SCSI Stream Commands (SSC) |
03h | Processor device | SPC Processor Commands | SCSI Primary Commands (SPC) |
04h | Write-once device | SBC Write Once Commands | SCSI Block Commands (SBC) |
05h | CD/DVD-ROM device | MMC CD-ROM Commands | SCSI Multimedia Commands (MMC) |
06h | Scanner device | SGC Scanner Commands | SCSI Graphics Commands (SGC) |
07h | Optical memory device (e.g., some optical disks) | SBC Optical Media Commands | SCSI Block Commands (SBC) |
08h | Medium changer (e.g. jukeboxes) | SMC Medium Changer Commands | SCSI Medium Changer Commands (SMC) |
09h | Communications device | SSC Communications Commands | SCSI Stream Commands (SSC) |
0Ah–0Bh | Defined by ASC IT8 (Graphic arts pre-press devices) | ASC IT8 Prepress Commands | |
0Ch | Storage array controller device (e.g., RAID) | SCC Array Controller Commands | SCSI Controller Commands (SCC) |
0Dh | Enclosure services device | SES Enclosure Services Commands | SCSI Enclosure Services (SES) |
0Eh | Simplified direct-access device (e.g., magnetic disk) | RBC Reduced Block Commands | Reduced Block Commands (RBC) |
0Fh | Optical card reader/writer device | OCRW Optical Card Commands | SCSI Specification for Optical Card Reader/Writer (OCRW) |
10h | Reserved for bridging expanders | ||
11h | Object-based Storage Device | OSD Object-based Storage Commands | Object-based Storage Commands (OSD) |
12h | Automation/Drive Interface | ||
13h | Security manager device | ||
14h | Host managed zoned block device[2] | Zoned Block Commands (ZBC) | |
15h | RMC Simplified Multimedia Commands | Reduced Multimedia Commands (RMC) | |
16h–1Dh | Reserved | ||
1Eh | Well known logical unit | ||
1Fh | Unknown or no device type |
References
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