> If someone puts a high-caliber bullet through my Gainesville DD, then > I recover it from the replicated offsite DD, perhaps selecting a snapshot. > > If someone puts a high-caliber bullet through both of them, then I > have lost my backups of a bunch of important databases.
And if you have a logical error on your primary box, which is then replicated to your 2nd box? Or even worse, a hash conflict? I dont consider someone putting a bullet through both the boxes a high risk, I do however consider other errors to be more of a high risk. Best Regards Daniel Daniel Sparrman Exist i Stockholm AB Växel: 08-754 98 00 Fax: 08-754 97 30 daniel.sparr...@exist.se http://www.existgruppen.se Posthusgatan 1 761 30 NORRTÄLJE -----"ADSM: Dist Stor Manager" <ADSM-L@VM.MARIST.EDU> skrev: ----- Till: ADSM-L@VM.MARIST.EDU Från: "Allen S. Rout" Sänt av: "ADSM: Dist Stor Manager" Datum: 10/03/2011 23:38 Ärende: Re: [ADSM-L] Ang: Re: [ADSM-L] Ang: Re: [ADSM-L] Ang: Re: [ADSM-L] vtl versus file systems for pirmary pool On 09/28/2011 02:16 AM, Daniel Sparrman wrote: > In this mail, it really sounds like you're using your DD as both > primary storage and for TSM storage. I am, right now, using the DD as a target for direct-written database backups, only. So that's not really "primary storage", as I think about it. > If the DD box fails, what are your losses? If someone puts a high-caliber bullet through my Gainesville DD, then I recover it from the replicated offsite DD, perhaps selecting a snapshot. If someone puts a high-caliber bullet through both of them, then I have lost my backups of a bunch of important databases. > Sorry for all the questions, I'm just trying to get an idea how > you're using this box. No problem. Our conversation is fuzzed by the fact that I am also talking about how one _might_ use it for TSM storage. I'm contemplating it, but not doing it at the moment. > [ ... if you lose a DD, then ... ] you have to restore the data from > somewhere else (tape?). In my planning, the DD gets copied / offsited to a remote DD, so that's the somewhere else. - Allen S. Rout