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RAID6 is a little slower due to 2 parity drives but better protection.
I usually recommend RAID5 with hot spare
You also have choices of Performance or Capacity option when starting RAID.
Performance option will give you 2 RAID sets and Capacity will give you 1
set.
Here's a link to Sue Bakers parity set Techdoc
https://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/TD105880
-----Original Message-----
From: Gad Miron
Sent: Friday, December 04, 2015 3:41 AM
To: midrange-l@xxxxxxxxxxxx
Subject: Raid Configuration
To the Hardware guys
a quick one:
Due to replacing 3 SSDs installed for test puposes with (the original) 3
HDDs
The BP is breaking the existing RAID5 set of 15 HDDs and is going to build
a 18 HDDs
RAID5 set (adding 3 HDDs)
My question, should we build istead a RAID6 set ?
what are the pros & cons?
This is a 8286 41A P8 machine with 18 283GB 15K discs all in the CEC
(plus 8 more in expansion 5887)
I believe that there is a EJ0P on-board controller .
So RAID5 or RAID6 ?
thanks
gad
midrange.com
