From: Felix Miata 
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@Date: Thu, 17 Jul 2003 11:56:33 -0400
Subject: Re: SCSI - SCA 80 To 68 Converter
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Don[ald] O. Woodall wrote:
 
>      I bought these through eBay, a while ago.  So I
> doubt I can return them.
 
>      They do not have terminating resistor packs on them.
> The hard drive(s) at the end of the chain have a termination
> option on them that I am using.

SCA drives don't have termination jumpers. They usually do have
termination power jumpers. With only three drives, you may need none
enabled, but I'd enable only the one on the end of the cable.

You need an active terminator on the end of the cable if you have three
drives. A passive terminator might do if you have fewer. Also, if one
drive is not SCA, you may be able to use its built in passive
termination if it is on the connector at the end of the cable.
 
> For Everybodies Information
 
>      Here is what I see when eCS 1.0 tries to load off of
> the CD.
 
> Symbios SDMS(TM) V4.0 SYM538XX OS/2 DRIVER
> Copyright 1998 LSI Logic
> SYM8XX.ADD v.4.11.00
> HBA ID LUN  VENDOR   PRODUCT         REV  SYNC WIDE
> --- -- ---- -------- --------------- ---- ---- ----
>  0  15  0   IBM-PCCO DDRS-34560Y  !# S97B  YES  YES
>  0   2  0   IBM      CDRM00203 1.00 YES  NO
>  0   7  0   Symbios  SYM53C895      YES YES
> eCS is unable to operate your hard disk or diskette drive.
> The system is stopped.  Correct the preceding error and
> restart the computer.

There are two typical causes of this:

1-You also have IDE drives, and the IDE driver loads first
2-(after installation is complete) drive letter shift from adding drives
and/or changing order of drives and/or adding/removing visible primary
partitions

I suppose unreliable termination could have similar impact (drive letter
shift, or randomly visible drives).
 
>      I probably had the second drive, SCSI ID 14, disconnected at the time
> I wrote the above down.
 
>      Thanks for the thorough on going discussion everyone.

Termination is a SCSI issue, not an OS2/eCS issue.

http://scsifaq.org:9080/scsi_faq/
http://members.ij.net/mrmazda/partitioningindex.html
-- 
"Do not let the sun go down while you are still angry."
                                                Ephesians 4:26 NIV

 Team OS/2 ** Reg. Linux User #211409

Felix Miata  ***  http://members.ij.net/mrmazda/


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