From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <3C625388.2010502@promofinarsa.es> From: Jesus Manuel NAVARRO LOPEZ MIME-Version: 1.0 Subject: Re: [linux-lvm] Backup costs (was: LVM reimplementationre) References: <3C6187A0.3DFEA8BE@lmco.com> <3C6242D0.3090005@promofinarsa.es> <20020207091719.GE5188@auctionwatch.com> Content-Transfer-Encoding: quoted-printable Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: Date: Thu Feb 7 04:15:02 2002 List-Id: Content-Type: text/plain; charset="iso-8859-1"; format="flowed" To: linux-lvm@sistina.com Hi, Petro: Petro wrote: > On Thu, Feb 07, 2002 at 10:03:12AM +0100, Jesus Manuel NAVARRO LOPEZ wrot= e: >=20 >>That's plainly untrue: AMANDA for one is free and very good for small=20 >>systems. >> >=20 > Define "small".=20 I'm succesfully using it for 4 servers with two DDS drivers, and I would sa= y it could be easy expandible to the numbers of tens. It have some "caveats" anyway. Rigth now it can't manage multivolume=20 quite efficiently (a single dump must go to single storage device, for=20 instance, and the multichanger specifications is a bit... "raw".=20 Management for automatic tape cabinets is out of the system too. It=20 uses an rsh-like client/server protocol to remote access systems so it's=20 not soo secure -while it can be ssh-tunneled -not out-of-the-box. It=20 doesn't support multiserial backups on a single config -but you can have=20 multiple definitions so off-site monthly backups don't interfere with=20 your monday-to-friday daily series, for instance). What it does pretty=20 well is automatically balance the backup levels for all your partitions=20 to optimize tape space and indexing your tapes (both semi-automatically=20 indexing tapes and maintain the index about what was where... it can=20 even help you the physical tape-labels, so you just print what amanda=20 tells you to, and have some -primitive, ability to create graphic logs=20 to help you planning capacity in advance). It will e-mail you too if=20 you forget to put the tape in the drive too. Appart from this, it uses underlying backup tools (dump by default, tar=20 or smbtar if you choose it) so you can restore even without amanda=20 software present (while it's more difficult: you just don't have a tape=20 labelled like "first-monday-of-the-month-so-level0-backups-here", but=20 only something like "Comm-dpt-tape-no12": if you loose your indexes you=20 will have to look at the labels for the dumps to guess what's in-there.=20 Anyway, those indexes are simple text files so they're easy to copy to=20 another box in advance, and they're sent day-to-day by e-mail to the=20 backup operator, so you do have options to avoid that situation). --=20 SALUD, Jes=EF=BF=BDs *** jesus_navarro@promofinarsa.es ***