SCSI2Pi/PiSCSI Comparison

The presumably most important differences between the current release of SCSI2Pi and PiSCSI 24.04.01 are listed below.

Feature SCSI2Pi PiSCSI Remark
Installation packages with highly optimized binaries Installation/update without compiling in a matter of seconds,
the binaries are considerably smaller compared to PiSCSI
Binary development snapshots Also for development versions installation packages are provided
X68000 host bridge Removed because of bad code quality and a lack of user interest
scsimon and scsiloop tool Removed because of bad code quality and dubious usefulness
Up to 25% higher transfer rates
with considerably smaller binaries
Measured with a Pi Zero WH (25%) and a Pi 4 (5%)
Support for SASI hard drives SASI hard drive emulation including backup/restore
Improved DaynaPort emulation,
improved DaynaPort bridge
About 16 MB less memory consumption (important for small Pis),
support for several DaynaPort emulations in the same network,
creation of the DaynaPort bridge can be switched off
Properties and property files Comfortable configuring of all settings without a command line
BlueSCSI compatiblity mode Support of the BlueSCSI filename conventions
Configurable caching modes A write-through cache, for instance, ensures always consistent image files
Configurable and additional mode pages User-definable mode pages for optimal driver/platform compatibility
Improved initiator mode Higher compatibility with the SCSI standard, new and improved tools
Scripting support s2pctl and s2pexec can execute command scripts
Management with SCSI commands The connected computer can control SCSI2Pi with SCSI commands
Improved and extended logging Improved error analysis capabilities
Optional compilation of device types Faster compilation when not all device types are required
Tool for sending SCSI or SASI commands Sending any command to a device,
the results are displayed or saved
Tools for advanced testing SCSI commands can be tested without Pi hardware on a PC
Programs can be launched without sudo When installing the binary packages or after sudo make install
Additional functions for the SCSI Control App SCSI Control since version 5.1 offers additional functions

The SCSI2Pi news provide information on more new features.

Several partly open for a long time PiSCSI tickets (bugs and requests for enhancement) have been addressed by SCSI2Pi.

PiSCSI Ticket Remark
335 Improved caching, optional write-through cache
479 Improved support of the SCSI commands READ/WRITE LONG
598 Dynamic MAC address for the DaynaPort, for more than one DaynaPort in the same network
740 Installation packages with binaries, installation without compiling
809 Support for SASI hard drives
1260 Consistent code formatting and conventions
1331 DaynaPort bridge for Bookworm
1402, 1410, 1412 DEC Alpha compatibility, addressing these issues in PiSCSI failed