Am Don, 2003-10-09 um 02.50 schrieb Donovan Baarda: > Using snapshots to do an incremental backup would be no different to > doing any other type of backup using snapshots. It's the same as a > normal incremental backup, just with the added guarantee that the > filesystem is not changing underneath you as you do it.
I guess I haven't described clearly enough what I mean - maybe I have misunderstood the concept (I first heard about this in a speech of a sales rep. from NetApp) I was told that some storage appliances - for example some bigger NetApp - can do Backups using "incremental" snapshots. This doesn't mean they make a snapshot and than create a backup from it to get consistent data, but use a bunch of snapshots itself. Say the first snapshot is created at 05:00 AM with 10TB data on the filer and the second one one hour later at 06:00 AM the "incremental snapshot" would backup only those blocks/files/whatever that have changed since then (maybe just a few GB). This allows much faster backups/restores with guaranteed consistency. At least thats how I understood it about a year ago - the concept sounds really nice to me, but neither the filers nor the software wich allows this procedures are cheap so I couldn't play with it yet. Is anyone on the list you uses this features and can tell what they really do or how good they work? >From a quick glance at their website I think it's called "SnapRestore" http://www.netapp.com/products/filer/snaprestore.html Disclaimer: I don't work for NetApp or any of their associates nor did I in the past. I don't even sell their products ;-) best regards, Markus -- Markus Oswald <[EMAIL PROTECTED]> \ Unix and Network Administration Graz, AUSTRIA \ High Availability / Cluster Mobile: +43 676 6485415 \ System Consulting Fax: +43 316 428896 \ Web Development -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
