Re: Parallel databases?
От | Colin Smith |
---|---|
Тема | Re: Parallel databases? |
Дата | |
Msg-id | Pine.LNX.4.10.10004151350400.1791-100000@Orlanth.homenetwork обсуждение исходный текст |
Ответ на | Re: Parallel databases? (Colin Smith <colin@yelm.freeserve.co.uk>) |
Список | pgsql-general |
On Sat, 15 Apr 2000, Colin Smith wrote: > On Fri, 14 Apr 2000, A James Lewis wrote: > > > > > Does anyone have any suggestions for a way to keep 2 databases in sync? > > > > Ideally updates need to be made to both... this can't be too uncommon a > > requirement..... any kind of HA would need it.... I've had a closer look at drbd. The home site is: http://www.complang.tuwien.ac.at/reisner/drbd/ It will replicate the blocks on a device out to backup servers. If the primary system fails the backup can take over. It doesn't do any distributed locking so it's strictly a failover service at the moment. It also looks like a real performance killer which is pretty much what you'd expect with each block being sent over the LAN as well as to disk. Definitely a case for a very high bandwidth low latency network (SCI, SP switch) 100Mbit/1Gbit dedicated might be acceptable though. -- |Colin Smith: Colin.Smith@yelm.freeserve.co.uk | Windows 2000 | |Linux: Delivers on the promises Microsoft make. | AKA | | http://www.linux.org/ | The W2K Bug |
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