[comp.sys.ibm.pc.rt] The Voodoo of installing drives in a IBM RT

MemAlloc@mcshh.hanse.de (Marco Pauck) (12/07/90)

No, this is not a question about how to install a drive in an
NEW box (aka RS/6000) but in an OLD (aka RT) one. Maybe I will
not install a RT itself anymore, but I'm sure I will add some
drives in existing RTs for the next years. Here the story
begins...
 
I have problems installing an ESDI drive in a RT (6150-125)
running AIX 2.2.1.
 
In the past, I sucessfully installed several different drives
(NEC, CDC, Fujitsu etc.) although with some problems.
 
To be on the save way, this time I choosed a Newbury Data
ND-4380E alias Maxtor XT-4380E. This is the drive which IBM
sells as a "H310" type, so I jumpered the Maxtor drive the same
way as a H310, put it in, and did a low-level format via VRM. Up
to this point everything worked fine.
 
But then confusion started. 8-(
 
The high level format via diagnostics failed reporting
 
   FORMAT ERROR 9
   FIXED-DISK DRIVE HARDWARE FAILRURE
 
Skipping high level format and trying to install VRM sometimes
results in another error message and sometimes the system just
crashes displaying "c6/00" on the front panel.
 
The diagnostics tell me that the Maxtor drive is OK.
 
Another mystery:
 
The Maxtor specs says the 4380 has 1224 cylinders. In the format
menu of the VRM, the H310 is reported as having 1189 cylinders
and 34 sectors/track. And the jumpering of the H310 itself tells
me that it's 35 sectors/track (each 598 bytes)! Of course I
tried any possible jumpering configuration...
 
BTW, in the past some drives failed to be formated high level
too. Other drives crashed the system in the middle of low level
formatting. (No, not a single drive in a single RT, but several
drives in several RTs.) All these drives are running for several
years now without any problems!
 
So, what's involved in adding third party products to IBM
systems? Voodoo??
 
Please help, because I don't want to try yet another drive type
only to encounter even more strange problems...

-- 
Marco Pauck
WMD GmbH, Hamburg, Germany
uucp  : MemAlloc@mcshh.hanse.de
phone : +49 (040) 3900139