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RE: Xserve RAID: RAID 5 set using more than seven drives?



That's pretty much how I've done it on the very few 14 drive installs I've done. Just curious...


-----Original Message-----
From:	Josh Wisenbaker [mailto:email@hidden]
Sent:	Fri 10/29/2004 6:48 PM
To:	Michael Dhaliwal
Cc:	Piers Uso Walter; Ken Carlile; Mac OSX Server
Subject:	Re: Xserve RAID: RAID 5 set using more than seven drives?

On Oct 29, 2004, at 7:59 PM, Michael Dhaliwal wrote:

> I would say leave the RAID at 2x7 drive RAID 5.  I had to make the 
> same decision about a week ago and that's how I left my storage.  No 
> one I spoke with really suggested 50 as a good idea.  Yes, you will 
> probably get a performance gain due to the fact that you have a set of 
> 14 drives, instead of 7.  Its really your choice.  Its a matter of 
> better performance with the set of 14 drives compared to the safety of 
> being able to keep your data online if a controller goes offline and 
> keeping one extra layer of complexity off your data set by not 
> software striping across controllers.
>
> Do you need more space than one 7 drive bank can give you?  I simply 
> broke off some data into the second controller, so instead of having 
> one bank 90% full, I have one 50% and the other 40%.

This is what we do too.  I think you get more flexibility this way. If 
you are editing HD video on it then go for the 50, but for data storage 
just leave them separate.

7 drives in a Xserve RAID is now 2.8TB!

Josh
-
Josh Wisenbaker, ACSA
Sr. Systems Engineer
ComputerTree Technologies
1-800-467-9820




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