From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: Backup raid, power down questions. Date: Tue, 19 May 2015 17:46:06 +0500 Message-ID: <20150519174606.4f7e8e75@natsu> References: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/iy0/s2XPq4nyNQgj8twKr.V"; protocol="application/pgp-signature" Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: "Wilson, Jonathan" Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/iy0/s2XPq4nyNQgj8twKr.V Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Tue, 19 May 2015 13:36:43 +0100 "Wilson, Jonathan" 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 wi= th a power supply failing and frying all the drives, and ending with an unauthorized access via some root exploit, with the intruder deleting all d= ata 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). --=20 With respect, Roman --Sig_/iy0/s2XPq4nyNQgj8twKr.V Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAlVbMI4ACgkQTLKSvz+PZwgUbACcD6whS0E/7nSBNA/UAmIV1bqm 6WEAoJNahFxY6gBqHwqhr8xxrrbQ1HFv =xkUq -----END PGP SIGNATURE----- --Sig_/iy0/s2XPq4nyNQgj8twKr.V--