[NTLUG:Discuss] [Bulk] Re: Adding harddrives

[m m]

>From: Leroy Tennison <leroy_tennison at prodigy.net>
>
>"In order to configure SCSI, you need a chicken to sacrifice" - from a
>Microsoft customer who I was trying to help when I was with their
>network support.
>
>You mentioned a SCA connection.  If I remember right these also supply
>power to the drives, is that correct?  Are the "problem" drives spinning
>up and do they show "signs of life"?  (It's things like these that have
>caused me to develop a hatred of SCSI - "the thing I like about
>standards is that there are so many to choose from": at least four
>different data connectors, single-ended versus low and high voltage
>differential which makes for enough variation to insure that nothing
>matches.)  What happens if you disconnect the two drives which are seen,
>does the RAID adapter see anything?  Do you have an Adaptec RAID
>controller you can connect them to?  They have a little more
>configurability than the Compaq RAID adapters.  Where did you get this
>equipment?  How old is it?  Are the various pieces the same age
>relatively?  It sounds like you need to go back to the source and get
>individual pieces working before trying to attack the complex 
>configuration.
>

You got a good point - go back to the source and get individual pieces 
working...

I have tried 2 ways, they are not necessary related, but I gave up finally.

tried 1:
I hooked those four HD into a SCSI supported motherboard (DELL ??? 410, old 
box). it detected those for HDs, but can not boot.

tied 2:
Replace the those 2 SCA scsi HDs with the same model HDs as working ones 
(all four HDs are the same model), and hooked to the compaq scsi array card. 
the problem still happened. only 2 HDs are detected.

I end up with added "160G" IDE2 HD.

Thanks for the inputs.







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