• Subject: Re: 8G as a 4G replacement
  • From: "Al Barsa, Jr." <barsa2@xxxxxxx>
  • Date: Mon, 08 Jan 2001 13:40:14 -0500

At 12:45 PM 1/8/01 -0500, you wrote:

No way.

This problem will continue to get bigger and bigger, and will particularly 
plague customers in the future when the minimum disk size could potentially 
grow to 17GB, 35GB and then 70GB if we follow the progression of where we 
have been.

If you have a need for a 20 GB system, and the minimum DASD size is 70GB, 
what do you do for protection.  In that case, the correct answer may be 
mirroring.  BTW, mirroring will help with the arm contention problem.  But 
what happens if you need with growth to have a system at 140 GB usable, and 
the minimum disk size is 70 GB.  Raid-5 requires a minimum of four devices 
in a parity set!

Al


> > You could add the drive without RAID protection.
>
>   Bad Answer!  I was hoping you could convince the system to just use 4G
>so it would be protected.
>
>   - Larry
>
> >
> > ...Neil
> >
> >
> >> OK. What happens if I try to add an 8G unit to an existing RAID set of
> >> 4G drives?
> >>
> >> Will it: a) Fail, b) Complain but allow it, just useing 4G of storage,
> >> or c) ???
> >>
> >> I know that it cannot be added at it's full 8G size but is there a way
> >> to 'force fit' it into a 4G set?
> >>
> >>  - Larry
>
>--
>Larry Bolhuis
>Arbor Solutions, Inc.
>(616) 451-2500
>(616) 451-2571 -fax
>lbolhuis@arbsol.com
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Al Barsa, Jr. - Account for Midrange-L
Barsa Consulting Group, LLC.    
400 > 390

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