On 15.02.2017 03:10, TE Dukes wrote:
>
>
>> -----Original Message-----
>> From: CentOS [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of John R
>> Pierce
>> Sent: Tuesday, February 14, 2017 8:13 PM
>> To: centos@xxxxxxxxxx
>> Subject: Re: RAID questions
>>
>> On 2/14/2017 5:08 PM, Digimer wrote:
>>> Note; If you're mirroring /boot, you may need to run grub install on
>>> both disks to ensure they're both actually bootable (or else you might
>>> find yourself doing an emergency boot off the CentOS ISO and
>>> installing grub later).
>>
>> I left that out because the OP was talking about booting from a seperate
> SSD,
>> and only mirroring his data drive.
>>
> Thanks!!
>
> I'm only considering a SSD drive due to the lack of 3.5 drive space. I have
> unused 5.25 bays but I'd have to get an adapter.
>
> I probably don't need to go the RAID 10 route. I just need/would like some
> kind of redundancy for backups. This is a home system but over the years due
> to HD, mainboard, power supply failures, I have lost photos, etc, that can
> never be replaced. Backing up gigabytes/terabytes of data to cloud storage
> would be impractical due to bandwidth limitations.
>
> Just looking for a solution better than what I have. A simple mirror is more
> than I have now. I'd like to add another drive for redundancy and go from
> there.
>
> What should I do?
RAID is *not* a backup. If a virus or buggy program or an accidental "rm
-rf *" in the wrong directory deletes files on a RAID then these files
are obviously gone on the replicas as well.
If you want to prevent the loss of files then instead you should add a
second disk to the system and simply backup data on a daily basis to
that disk.
A RAID array is not the appropriate way to go for you scenario described
above.
Regards,
Dennis
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