home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!gatech!pitt!mb5000.anes.upmc.edu!batman
- From: batman@mb5000.anes.upmc.edu (William E Madden Jr.)
- Newsgroups: comp.sys.hp
- Subject: A few SCSI questions.
- Keywords: SCSI HP705 Disk drives
- Message-ID: <16321@pitt.UUCP>
- Date: 3 Sep 92 14:38:06 GMT
- Sender: news@cs.pitt.edu
- Organization: UPMC
- Lines: 42
-
- Ok, I lost my NNTP connection in mid-entry of the last message, so if
- you get two of these, sorry about that.
-
- I'm posting this for a friend who doesn't have Internet access yet. We
- don't follow this group, so please send replies to wemst7@unix.cis.pitt.edu or madden@cdi01s.cdi.com . Thanks in advance.
- We're developing a SCSI based device that is accessed as a raw disk drive..... Now, onto the questions....
- -Bill
-
- Howdy (yet again)....
- I have a couple of questions regarding the current scsi implementation on the HP705.
- a) On the data lines, is parity implemented and if so what sense does it have?
- b) Which scsi is used? (scsi-1 or the draft scsi-II standard...or something else?) Particulars on this are:
- 1) after arbitration and selection (HP is initiator) is the
- IDENTIFY message automatically sent as the next phase?
- 2) is /ATN routinely set whenever a message out request
- is pending?
- 3) for random access devices, which messages and
- commands besides the scsi-II mandatories are implemented?
- 4) for the random access type target, are there any
- group 5 (12 byte blocks) commands implemented, and if so
- is the scsi-1 or scsi-II "typical" block structure
- used?
- 5) for raw disc-type random access devices, is a
- FORMAT command ever used and if so, how are the returned
- data used to calculate later calls to logical block
- addresses (if used at all)?
-
-
- I'll probably have more fun questions later. In the meantime, thanks
- for all the help.
-
-
- paul
-
- -------------------------------------------------------------------------
- William E. Madden Jr. | Even I don't admit to any of the
- Systems/Software Engineer | opinions expressed in this message,
- Computational Diagnostics, Inc. | so why should Starfleet Acadamy,
- Pittsburgh, PA 15213 | any of my ex-girlfriends, or CDI
- madden@cdi01s.cdi.com | be held responsible for any of 'em?
- wemst7@unix.cis.pitt.edu |
- -------------------------------------------------------------------------
-