Re: limits on raid

[david]

On Mon, 18 Jun 2007, Wakko Warner wrote:

> Subject: Re: limits on raid
>
> david@xxxxxxx wrote:
> > On Mon, 18 Jun 2007, Brendan Conoboy wrote:
> >
> > > david@xxxxxxx wrote:
> > > > yes, sorry, ultra 320 wide.
> > >
> > > Exactly how many channels and drives?
> >
> > one channel, 2 OS drives plus the 45 drives in the array.
>
> Given that the drives only have 4 ID bits, how can you have 47 drives on 1
> cable?  You'd need a minimum of 3 channels for 47 drives.  Do you have some
> sort of external box that holds X number of drives and only uses a single
> ID?

yes, I'm useing promise drive shelves, I have them configured to export 
the 15 drives as 15 LUNs on a single ID.

I'm going to be useing this as a huge circular buffer that will just be 
overwritten eventually 99% of the time, but once in a while I will need to 
go back into the buffer and extract and process the data.

David Lang
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