If you create 2 stripes, will you have 2 disk controllers? If not, I don't see
much difference between the two. I'd be more concerned with file sizing, and
using indices rather than sequential searches, and other tuning techniques
(read-ahead parameters, file caching, fs buffering, etc.). One caveat is that
I'm assuming that these disks are all dedicated to UniVerse; if you're sharing
them with, say, MS Outlook (some SANS do this, and the storage guys will tell
you it doesn't matter. They are incorrect.), ouch.
> From: [email protected]
> To: [email protected]
> Date: Wed, 28 Apr 2010 11:46:47 -0500
> Subject: [U2] Universe and stripped drives
>
> We are in the process of upgrading our system.
>
> When we setup our current system, it was suggested we strip our data drives
> (5) into one,
> instead of having 5 separate drives, so it could pull more data at once.
>
> The new system will have 6 drives available for striping
>
> We were going to have 6 drives striped into one, which would be partitioned
> into our data areas
> the thought being it would be faster disk access if it's pulling from all 6
> drives at once.
> BUT...all of the partitions are on that one striped drive.
>
> Would it be better to have (2) sets of 3 drives striped into one, and setup
> the two most used
> accounts on each of those drives, so now it's only pulling data from 3
> drives, but there could
> be less competition between the two accounts, since they are pulling from
> separate drives?
>
> Anyone played with this at all?
>
> FYI, each drive is mirrored as well, so if there is a drive failure, data
> loss is protected,
> if there was a drive failure on both the main and mirror (same drive) then
> with the
> 6 drive strip, we stand to potentially lose more data, than if there were 2
> sets of 3 striped.
> But...since we have full daily backups, and potentially, considering a second
> backup during
> the day, the amount of data loss would be minimal....so I'm putting that off
> the table for
> now in determining whether to go with a 3 or 6 stripe.
>
>
> George Gallen
> Senior Programmer/Analyst
> Accounting/Data Division, EDI Administrator
> [email protected]
> ph:856.848.9005 Ext 220
> The Wyanoke Group
> http://www.wyanokegroup.com
>
>
>
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> [email protected]
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