Re: Disk Config With CX6000

Brandon,
I wasn't aware of any limitation of IO per LUN on HP-UX. Can you
provide more details?
Thanks,
Alex


On 6/18/07, Allen, Brandon <Brandon.Allen@xxxxxxxxxxx> wrote:



I'm not sure about the Metalun term, but I believe some operating systems
(e.g. HPUX) have internal restrictions on the I/O throughput per LUN, so you
might just want to double check to see if your OS (or any other component in
the I/O stack) implements this type of limitation, in which case it would be
a good idea to present multiple, smaller LUNs to the OS rather than one big
LUN.  The best way to know for sure is to test - use dd or something similar
to see what is the max IOPS you can get on a single LUN vs. two LUNs on the
same disk array.

Regards,
Brandon

 ________________________________
 From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of steve montgomerie


should I look at one big RAID 10 set or a couple of smaller ones


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Best regards,
Alex Gorbachev, Oracle DBA Brewer, The Pythian Group
http://www.pythian.com/blogs/author/alex http://blog.oracloid.com
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