SCSI to IDE bridges... (and useful info for PDP-11 users)

I have used the Acard AEC-7720U SCSI <> IDE bridges. Thusfar, I have tested them with a few different brands of IDE drives; a Caviar 2100, a Fujitsu MPA3026AT, and a Samsung SV04232A. I have also used various sized CF cards, hung off the appropriate adapter. During my testing, these?were attached to a PDP-11, via a number of different Q-bus SCSI?controllers: CMD CQD-200/M CMD CQD-220/M Dilog SQ706A Emulex UC07 All performed similarly, and I had no trouble?formatting and using the attached IDE disks and compact flash cards. I don't pretend to understand the internal workings of the bridge card, but it appears that the bridge auto-detects the capacity of the IDE drive, and?translates that information to the SCSI side. I don't know if there is any limitations to the size of the IDE drive used; my testing was under RSTS/E, hence I couldn't use anything over 2.1 gig. (Some older IDE drives support a 2.1-gig clip, which works well.) Your mileage may vary. If you don't need alot of storage, they do have these available on-line: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=360087484205 That at least eliminates the additional?IDE <> CF interface, and makes for a smaller form-factor.? There are less expensive models floating around on e-bay, if you look carefully. For those with deep pockets wanting a one-piece solution to SCSI <> CF, there is also this little puppy: http://www.reactivedata.com/3-SCSIBridgeEmulators/legacy_scsi.htm As info. . . . T