[NBLUG/talk] RAID1 and partitions

[Allan Cecil]

You are not an idiot.  Ultimately, whether you use no RAID at all, full RAID, or something crazy like Ceph depends on your usage needs, and everyone has different usage needs.

RAID is a great guard against drive failure (usually), but is *never* something to rely on as a backup because corruption usually hits both disks.  As long as you're using RAID as another tool in the toolbox to confront spinning disk destruction you're on the right path. :)

Omar, to your original question, if you can get your hands on it you might want to read Kyle Rankin's Ubuntu Server chapter on RAID configuration.  While you may be on Ubuntu desktop the instructions should carry over OK.

Best of luck,

A.C.
******

On 05/01/2015 12:10 PM, gandalf at sonic.net wrote:
> I'm not really a big fan of raid. I think your much better off having a second drive and doing a daily rsync. Raid drives typically fail within the same timeframe, also it is not uncommon for a drive to fail in a manner that it corrupts the other drive. Regular backups are much more powerful.
> 
> There I said it. Everyone chime in and tell me I'm an idiot. :-)
> 
> 
> On 2015-05-01 10:23, Omar Eljumaily wrote:
>> Does anybody have any tips for setting up a RAID1 array on Ubuntu?
>>
>> I've looked at this:
>>
>> https://help.ubuntu.com/lts/serverguide/advanced-installation.html
>>
>> It suggests setting up
>>
>> md0 as a swap partition and
>> md1 as an ext4 / partition which is also bootable.
>>
>> My experience with Centos is to do:
>>
>> md0: /boot with ext2
>>
>> md1: as an LVM volume creating partitions:
>>
>> swap
>> and / as ext4
>>
>> My goal is reliability and to be able to boot into either volume when
>> the other is degraded.  Is there any standard way to do this?
>>
>> Thanks,
>>
>> Omar
>>
>>
>>
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