Re: Backup raid, power down questions.

[Roman Mamedov <rm@romanrm.net>]

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On Tue, 19 May 2015 13:36:43 +0100
"Wilson, Jonathan" <piercing_male@hotmail.com> wrote:

> I am looking to create a second raid6 set which will only be used to do
> periodical backups of the main raid6, probably using rsync. (all drives
> will be tler'able WD reds)

> Obviously when the system boots all the raids will start up

With both RAIDs in the same case, sharing a PSU, connected to the same
system? I'd say forget about it, that's a terrible way to have a "backup",
too many things that can go wrong affecting both RAIDs at once. Starting with
a power supply failing and frying all the drives, and ending with an
unauthorized access via some root exploit, with the intruder deleting all data
or dd'ing zeroes to all drives.

Throw together a separate inexpensive computer and back up to that. Can even
power off it entirely when not in use and power-on either by Wake On Lan or by
schedule (most x86 BIOSes have a feature to power-on the machine daily at a
specified time).

-- 
With respect,
Roman

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