-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of John R Pierce Sent: den 5 december 2013 09:58 To: centos@centos.org Subject: Re: [CentOS] Third-party SATA-RAID cards suggestions
10 hard drives should be plugged into a SAS backplane, even if they are SATA drives, and driven by a SAS controller, using a 4 channel SAS cable. anything else is ghetto.
It might be considered that, it was a cheap solution. Not necessarily the best one.
you said RAID card, then you talk about JBOD? which is it.
Primarily RAID.
the LSI SAS 920x family should work just fine at this. if it didn't you got cabling problems.
Thank you for the hint. The setup worked fine with Windows 2012 R2, which saw both card and disks and was able to create a raid0-array for testing. CentOS 5/6 didn't for some reason.
at centos install time, you don't create a single big software raid out of anything, you create mirrors for your OS root and /boot file systems, then after the system is running, you create your big raid 10 or whatever as your data volume, make that LVM, put /home and /var on it if you want, whatever.
I apologize for any confusion. For linux-servers I usually install CentOS on a separate system disk, with user-data on another separate disk or as in this case on the other ten drives which are to form a single raid-array.
-- //Sorin