Re: A DBA philosopical question

From: DA Morgan <damorgan_at_psoug.org>
Date: Fri, 02 Dec 2005 11:39:20 -0800
Message-ID: <1133552345.321715@jetspin.drizzle.com>

Bob Jones wrote:

> <jared.hecker_at_gmail.com> wrote in message 
> news:1133466649.707467.142860_at_g43g2000cwa.googlegroups.com...
> 

>>I am consulting at an all-Windows shop, running mostly 9.2.0.3 -
>>9.2.0.6 under Windows 2003 Server. The one no-no I've encountered so
>>far is that their SAN array is all RAID 5. As they have grown by
>>acquisition, this is an old, old StorageTek unit that supposedly does
>>not support RAID 1,0.
>>

> 
> 
> What's wrong with using RAID 5?

Very slow writes.

Oracle, for years, has advised against RAID5 in most situations. The only hardware with RAID5 performance equivalent to RAID 0+1 is Apple's.

-- 
Daniel A. Morgan
http://www.psoug.org
damorgan_at_x.washington.edu
(replace x with u to respond)

Received on Fri Dec 02 2005 - 13:39:20 CST