[NBLUG/talk] RAID1 and partitions

[Omar Eljumaily]

I don't like RAID either for a number of reasons.  However, the clients 
I deal with typically are losing about $500 per hour if one of their 
main servers goes down.  I've actually relied on RAID a number of 
times.  It's saved everybody lots of money and head aches.

I'd like to go full cloud like on AWS or something, but it's too slow 
and sometimes too expensive right now.  As an alternative, I'm shooting 
for a main server(s) locally that get archived every night on AWS with 
the ability to work completely off the cloud if the local server goes down.

I think the local server will still use RAID.  It's just a matter of 
practicality.  1 TB of data takes multiple hours to restore, and 
non-active mirrors are marginally reliable at best.

Omar


On 5/1/2015 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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