On Thu, November 14, 2013 12:51, Reindl Harald wrote:
>
>
> Am 14.11.2013 18:23, schrieb James B. Byrne:
>> From what I have read it appears that the system disk must use RAID 1 if it
>> uses RAID at all.
>
> no!
>
> /boot must be RAID1, see below
> md0: /boot
> md1: /
> md2: /data
>
> [root@srv-rhsoft:~]$ cat /proc/mdstat
> Personalities : [raid1] [raid10]
> md2 : active raid10 sda3[4] sdb3[3] sdc3[5] sdd3[0]
> 3875222528 blocks super 1.1 512K chunks 2 near-copies [4/4] [UUUU]
> bitmap: 4/29 pages [16KB], 65536KB chunk
>
> md1 : active raid10 sda2[4] sdb2[3] sdc2[5] sdd2[0]
> 30716928 blocks super 1.1 512K chunks 2 near-copies [4/4] [UUUU]
> bitmap: 0/1 pages [0KB], 65536KB chunk
>
> md0 : active raid1 sda1[4] sdb1[3] sdd1[0] sdc1[5]
> 511988 blocks super 1.0 [4/4] [UUUU]
>
So, this is saying, if I read it aright, that one can have multiple RAID
arrays spread over the same spindles but each in differing partitions. Is
that right?
I am just getting started with this so I am trying to fit what I am reading
regarding RAID with what I have dealt with in the past, mainly LVM ext3
volumes. So I am doubtless just not getting it in some important way.
BTW, I intend to install CentOS-6.4 with software RAID as the eight disks are
mounted in the system chassis. As far as I can tell, there is no hardware
RAID controller (unless there is one on the MB, in which case SW Raid is
likely a better choice anyway.
Regards,
--
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