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:

ValueDevice typeCommand setSpecification
00hDirect-access block device (e.g., magnetic disk)SBC Direct Access CommandsSCSI Block Commands (SBC)
01hSequential-access device (e.g., magnetic tape)SSC Sequential Access CommandsSCSI Stream Commands (SSC)
02hPrinter deviceSSC Printer CommandsSCSI Stream Commands (SSC)
03hProcessor deviceSPC Processor CommandsSCSI Primary Commands (SPC)
04hWrite-once deviceSBC Write Once CommandsSCSI Block Commands (SBC)
05hCD/DVD-ROM deviceMMC CD-ROM CommandsSCSI Multimedia Commands (MMC)
06hScanner deviceSGC Scanner CommandsSCSI Graphics Commands (SGC)
07hOptical memory device (e.g., some optical disks)SBC Optical Media CommandsSCSI Block Commands (SBC)
08hMedium changer (e.g. jukeboxes)SMC Medium Changer CommandsSCSI Medium Changer Commands (SMC)
09hCommunications deviceSSC Communications CommandsSCSI Stream Commands (SSC)
0Ah–0BhDefined by ASC IT8 (Graphic arts pre-press devices)ASC IT8 Prepress Commands
0ChStorage array controller device (e.g., RAID)SCC Array Controller CommandsSCSI Controller Commands (SCC)
0DhEnclosure services deviceSES Enclosure Services CommandsSCSI Enclosure Services (SES)
0EhSimplified direct-access device (e.g., magnetic disk)RBC Reduced Block CommandsReduced Block Commands (RBC)
0FhOptical card reader/writer deviceOCRW Optical Card CommandsSCSI Specification for Optical Card Reader/Writer (OCRW)
10hReserved for bridging expanders
11hObject-based Storage DeviceOSD Object-based Storage CommandsObject-based Storage Commands (OSD)
12hAutomation/Drive Interface
13hSecurity manager device
14hHost managed zoned block device[2]Zoned Block Commands (ZBC)
15hRMC Simplified Multimedia CommandsReduced Multimedia Commands (RMC)
16h–1DhReserved
1EhWell known logical unit
1FhUnknown or no device type

References

  1. ↑ Draft of SCSI Primary Commands - 4 (SPC-4 r36d), section 6.6.2 - Standard INQUIRY data.
  2. ↑ Draft of SCSI Primary Commands - 5 (SPC-5 r10), section 6.6.2 - Standard INQUIRY data


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