I have been using SCSI controllers in one form or another in some of my PCs for over 15 years. At this time, I have only a couple of SCSI devices left - one 36 GB hard drive made by Seagate that spins at 15,000 rpm, and a DAT DDS-4 tape drive made by HP. The last SCSI controller I bought was purchased in 2001 and is based on the 53C1010 Ultra160 SCSI chipset by LSI Logic, formerly Symbios, formerly AT&T, formerly NCR. This chipset worked wonderfully under a variety of operating systems, from OS/2 up to and including Windows Vista x64.
Enter Windows 7. Earlier this wednesday, I attempted to migrate the system containing this SCSI controller from Windows Vista x64 to Windows 7 x64. I was told that there was no driver for Windows 7 for the controller. This was quite disappointing, after 8 years of loyal services. I disabled the device in the device manager, and proceeded with the installation of Windows 7 anyway.
At the time of this writing, I have been unable to locate a proper driver for this controller under Windows 7 x64. This means the OS can no longer see my two SCSI devices. I don't care much about Windows no longer seeing the DDS-4 tape drive as I wasn't using it under Windows. But I am bothered by no longer seeing the SCSI hard drive, which still contains a bootable copy of OS/2 Warp Server for E-Business SMP. While that SCSI hard drive is formatted as HPFS, and can therefore not be mounted under Windows 7, it could still be imaged and backed up with Acronis True Image Home, at least under Windows Vista back when the SCSI controller worked. I may end up going back to Windows Vista on this system if I can't resolve this issue. Or I might move my OS/2 installation to another drive.