Re: Question about drive configuration

[Philipp Rusch <Philipp.Rusch@xxxxxxxxxxxx>]

Hello David,
you would need another two 8 GB drives to accomplish your task,
the AS/400 RAID algorythm needs 4 drives of equal type for a parity set.
So what your SE did was the best thing he could do a that time.

Regards from Germany, Philipp Rusch

David Gibbs schrieb:

> Folks:
>
> I'm not a hardware guru ... I've got a question about drive configuration on
> our 9406-170 (V5R1).
>
> We recently purchased a two new 8gb drives for the system, IBM installed and
> configured them like this ...
>
> # Type   Size  % used  Protection
> 1 6607   4194  91.9 1  DPY
> 2 6607   3145  92.4 1  DPY
> 3 6607   3145  92.1 1  DPY
> 4 6607   3145  92.3 1  DPY
> 5 6717   8589   7.7 1  MRR
> 6 6717   8589   7.7 1  MRR
> 7 6607   3145  53.5 2  DPY
>
> The two new drives are 5 & 6 (drive 7 is in an ASP by itself, for testing
> purposes).
>
> We really don't need to have the drives mirrored ... is it possible to put
> the two new drives in the party set with the others?  Our ITS guy thinks
> they cannot because of the difference in size.
>
> My main goal is to maximize the disk available, while also providing some
> failure protection.  Mirroring (IMHO) wastes drive space and provides
> un-needed protection.
>
> Thanks!
>
> david
>
> --
> David Gibbs
> Sr. Software Engineer / R&D / MKS Inc., www.mks.com
> Lombard, IL, USA; tel: 630-495-2108; fax: 630-495-3591
> Build Better Software
>
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