Обсуждение: Re: need for in-place upgrades (was Re: State of
Not that my DB is that big.. but if it was and it contained any sort of financial data (something that you might want to dispute 2 years down the road) then I would have multiple replicated systems (which I do have .. but they are MSSQL) and I would also be backing the data up to an offsite storage.. either via tape or another box with enough storage space. Your best bet is to have geographical redundancy. Travis -----Original Message----- From: Lincoln Yeoh [mailto:lyeoh@pop.jaring.my] Sent: Sunday, September 14, 2003 10:20 AM To: Lamar Owen Cc: PgSQL General ML Subject: Re: need for in-place upgrades (was Re: [GENERAL] State of >At 07:16 PM 9/13/2003 -0400, Lamar Owen wrote: >'migration' server. And I really don't want to think about dump/restore >of 100TB (if PostgreSQL actually stores the image files, which it might). Hmm. Just curious, do people generally backup 100TB of data, or once most reach this point they have to hope that it's just hardware failures they'll deal with and not software/other issues? 100TB sounds like a lot of backup media and time... Not to mention ensuring that the backups will work with available and functioning backup hardware. Head hurts just to think about it, Link. ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org
On Sun, 2003-09-14 at 12:55, Williams, Travis L, NEO wrote: > Not that my DB is that big.. but if it was and it contained any sort of > financial data (something that you might want to dispute 2 years down > the road) then I would have multiple replicated systems (which I do have > .. but they are MSSQL) and I would also be backing the data up to an > offsite storage.. either via tape or another box with enough storage > space. Your best bet is to have geographical redundancy. There are companies (Iron Mountain comes to mind) that have *large*, secure, temperature-controlled warehouses (an old mine, in Iron Mountain's case) and couriers that will bring your tapes (and other documents, for that matter) to their facilities. You put the "stuff" to be brought off-site in a special box, with the "recycle date" on it. Each day/week/month, they will bring back the "old" box(es) and take away the "new" box(es). For a fee, or as part of the service contract, some will even bring out boxes at odd hours of the night/weekend. > -----Original Message----- > From: Lincoln Yeoh [mailto:lyeoh@pop.jaring.my] > Sent: Sunday, September 14, 2003 10:20 AM > To: Lamar Owen > Cc: PgSQL General ML > Subject: Re: need for in-place upgrades (was Re: [GENERAL] State of > > > > >At 07:16 PM 9/13/2003 -0400, Lamar Owen wrote: > >'migration' server. And I really don't want to think about > dump/restore > >of 100TB (if PostgreSQL actually stores the image files, which it > might). > > Hmm. Just curious, do people generally backup 100TB of data, or once > most > reach this point they have to hope that it's just hardware failures > they'll > deal with and not software/other issues? > > 100TB sounds like a lot of backup media and time... Not to mention > ensuring > that the backups will work with available and functioning backup > hardware. > > Head hurts just to think about it, -- ----------------------------------------------------------------- Ron Johnson, Jr. ron.l.johnson@cox.net Jefferson, LA USA "All machines, no matter how complex, are considered to be based on 6 simple elements: the lever, the pulley, the wheel and axle, the screw, the wedge and the inclined plane." Marilyn Vos Savant
Ron Johnson wrote: > There are companies (Iron Mountain comes to mind) that have *large*, > secure, temperature-controlled warehouses (an old mine, in Iron > Mountain's case) and couriers that will bring your tapes (and > other documents, for that matter) to their facilities. Actually, part of this database's mission is to do this sort of thing here, as we have large, temperature and humidity controlled rooms (with raised floor) for storing backup data. Security at this site is, well, legendary. Or at least it was. But the bullet-proof glass on what windows are here tend to have an impression -- and in this case 'bullet-proof' includes 50 caliber machine guns. You just have to read about it to believe it: google for 'Rosman Research Station' and see www.pari.edu. The front door to the building we're going to use for archiving has a Sargent and Greenleaf combination lock on it, and is bullet-proof. This is the only entrance -- there are a number of exits, but only the one entrance. Well, except for the tunnel, but that's a different story. -- Lamar Owen Director of Information Technology Pisgah Astronomical Research Institute