RE: To use SAME or NOT for High End Storage Setup ?

From: Jesse, Rich <Rich.Jesse_at_qg.com>
Date: Thu, 11 May 2006 12:48:51 -0500
Message-ID: <FB5D3CCFCECC2948B5DCF4CABDBE66975461DE@QTEX1.qg.com>

Wouldn't a SAN negate all of this mess? Better yet, throw an SVC in between.  

I like not having to worry (as much!) about storage.  

Rich

	-----Original Message-----
	From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Connor McDonald
	Sent: Thursday, May 11, 2006 9:36 AM
	To: Oracle-L
	Subject: Re: To use SAME or NOT for High End Storage Setup ?
	
	


	On 5/11/06, Kevin Closson <kevinc_at_polyserve.com> wrote: 

		Well, it is my opinion and experience that with the type
of
		HW you have, you should create a SAME volume of max at
		least 1MB stripe width tht consists of all the LUNS
(each being
		RAID1+0 themselves).
		 


	Maybe volume managers have improved since I last used them in

anger, but my only concern with that approach is the ongoing growth. That is, you've got (say) 100 disks over which your volumes are all striped, but then management says "you can have 4 new disks each week/month/year" for growth. Such a finanically-imposed policy, resulted in a nice humming batch of 100-disk-stripe volumes on day 1, plus an ever increasing number of cruddy 4-disk-stripe volumes, which you had to fill before management would cough up some dosh for another 4.         

        Do vol mgr's nowadays have the ability to "rebalance" the volumes ala ASM to avoid this? And if so, presumably you're still up for a nasty IO spike whilst it occurs ?         

	Cheers
	Connor 
	-- 
	Connor McDonald
	===========================
	email: connor_mcdonald_at_yahoo.com
	web:   http://www.oracledba.co.uk
	
	"Semper in excremento, sole profundum qui variat" 

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Received on Thu May 11 2006 - 12:48:51 CDT