This list is really great. Thanks for the prompt response from:
Mervyn.Weis_at_compaq.com
John.Becker_at_compaq.com
alan_at_nabeth.cxo.dec.com
Both Mervyn and Alan told me that KZPSA would be the one connected to the HSZ50
if no converter in between, since both of them are differential; wheras KZPDA is
single-ended.
John advised me to use
/usr/sbin/dia -R |more
then search for "System configuration", and In this record (which can be veerrry
long), look for the pci
bus devices and something like the following:
Vendor/Device ID Code x00081011
Vendor: x1011 Digital Equipment Corp.
Device: x0008 DEC_KZPSA Fast-Wide-Differential SCSI
This seems to be a very accurate method, so I tried, however when I search in
the record, that session hung. I will try it again later.
Alan's e-mail is very detailed and self-explained. I will copy it here:
The KZPDA is single-ended. The KZPSA is differential. The
HSZ50 is differential. If those are the two choices and
the cable runs directly to controller without a converter
in between, you have a KZPSA. If those are the only choice
and you have a single-ended to differential converter, then
you probably have a KZPDA.
You can also look at the boot listings. A sample set might
look like:
pza1 at pci0 slot 5
pza1 firmware version: DEC P01 A10
scsi5 at pza1 slot 0
rzh40 at scsi5 target 0 lun 7 (LID=101) (DEC HSZ50-AX V51Z) (Wide16)
Each logical unit will have a line like the last one giving
the device name, which SCSI bus it is on, the target and
logical number and the SCSI Inquiry data. Before the first
of these is the line that associates the SCSI bus with the
adapter it is on "scsi5 at pza1". The line before this will
provide some detail about the adapter:
pza - KZPSA
isp - KZPDA, KZPBA
itpsa - KZPCM
The "isp" line is used for both the single-ended KZPDA and
the SE and Diff. KZPBA. I think the KZPDA is listed simply
as a "isp#: QLOGIC ISP1020A", where the KZPBA is listed as
"isp#: QLOGIC ISP1040B...". The differential version will
probably report that where the single-ended version won't.
Physically, from the bulkhead connector, there is very
little to tell the KZPDA and KZPSA apart. Both have the
high density 68 pin SCSI connector. The KZPBA is easier,
since it has "SE" stamped on it for the single-ended version
and "DIFF" for the differential version.
I checked /var/adm/messages,
vmunix: pza0 at pci1 slot 3
vmunix: pza0 firmware version: DEC P01 A10
vmunix: scsi16 at pza0 slot 0
vmunix: rz129 at scsi16 target 1 lun 0 (LID=9) (DEC
HSZ50-AX V51Z) (Wide16)
So it looks my one is a KZPSA. The machine is not on site, so I couldn't
physically look at the connector today.
Thanks again for the reply and help. It's really great.
Li
Received on Wed Oct 13 1999 - 21:58:41 NZDT