New Disks and old SCSI-2 Adapter

[AIX5L]

I have a Problem with an old 4-7 SCSI-2 Single Ended Fast/Wide Adapter and new 18,2 Gb DDYS IBM Disks.

The Machine is an RS/6000 J-50
OS: AIX 4.3.3 / ML 8 / Latest Fixes.
The errorlog shows SCSIERR_10
All Cables, Terminators and Drivers are ok, but i don`t see any Disks.( cfgmgr -v -i /dev/cd0; mkdev )

Thanks a lot?
RS

 

[BobMCT]

Mr. 5L;

First the obvious... 1) is the drive SCSI ID set to the proper value? 2) is there proper termination on the internal ribbon cable (IBM usually has a terminator connected to the end of the chain)? 3) are there any jumpers set on the drive that might interfere with its detection by AIX?

Look closely and start over. We've installed unrecognized disk many times and AIX defines them as "other scsi disk" but they work great.

Good luck.

 

[crowe]

After you have run cfgmgr, lsdev -Cc disk shows nothing? If that is true, I believe it has to be a HW issue. Even if the proper drivers were missing, I think it would still show up as "hdisk DEFINED OTHER SCSI DISK DRIVE". Also, I assume this is an external disk drive. Does lsdev -C show that ascsi2 is available?

crowe

 

[AIX5L]

Hy BobMFDC

All these things are Ok.

I think that the new IBM OEM Drives are not recognized on this adapter.

Because the same Disk runs on another Adapter, in an other Machine.

SCSI-2 Single-Ended Hi-Perf Int/Ext I/O Controller
Type 4-4 - #2410/#2831 (P/N: 11H4779)

 

[BobMCT]

Well, my only other recommendation is to locate the multi-bus adapter manual and look at the int/ext scsi adapter you have in this system. Some of the RS systems had one that required a jumper to be set to enable the external port (I am assuming you are using the drive externally). If not - then again, look for a termination jumper on any of the other drives installed. Something has got to keep this from being seen.
If the drive works in another system, then what is different in the connection? Is it the position in the scsi chain the same? If so - then look at the other devices on each chain. Any differences? Any unsuspected termination? No termination? etc.

Try and try again.