[CentOS] IBM X3200

Thu Aug 30 05:09:48 UTC 2007
John R Pierce <pierce at hogranch.com>

CentOS List wrote:
> Hi ppl .
>
> I am getting a IBM x3200.. This machine can only support up to 4 x 
> 250GB SATA. I need to have a usable space of 500GB and mirror it to 
> other 500GB.
> IBM proposed me to get 2 RAID cards. Do you guys think i can do raid 0 
> on the first 2 x 250GB HDD and raid 0 on the second 2 x 250GB hdd, 
> both on hardware raid and then during the installation of centos 5, i 
> raid 1 on both the 2 sets of hardware raids?

IBM's website says you can use 500GB and even 750GB drives with their 
'simple swap SATA raid'.    whatever.

If you're using 4 x 250GB, have IBM configure it as  a primary and 
secondary raid-1 (2 drives each).   then, when you install CentOS, tell 
the centos installer to add both of those RAID volumes to a single 
VolGroup00 with LVM, then create your file systems on the resultant 
LVM.   LVM will stripe the data across the two mirrors, so you'll get 
the equivalent of a raid10