Bernd Schemmer wrote: > Sanjay G. Nadkarni wrote: >> This may sound confusing but multi-owner disksets are available with >> and without SunCluster. However, if you want to add more than one >> host to the diskset you need Suncluster. > > Do I need to install & configure the complete SunCluster to use this > feature? Or is it sufficient to install only some packages to get the > functionality? > You need all of SunCluster. >> Naturally this begs the question, why would anyone want this >> functionality for a single node. > For a Disaster Recover Solution without using a cluster for example. > I guess the question I would have is do all the nodes need to access volume at the same time. multi-owner disksets enable functionality required for Cluster FS or Oracle RAC >> Very simply, it allows ABR functionality on a single node. > > What is "ABR functionality"? ABR stands for Application Based Recovery. If volumes are mirrored, typically the volume manager is responsible for ensuring the consistency of that mirror. However this does incur some overhead. If an application can ensure consistency then this functionality can be disabled and that is what ABR does.
>> Thus if your software can keep track of transactions (like oracle >> logs do for example) then you could leverage this functionality even >> on a single node. >> >> > regards > > Bernd > >> >> This message posted from opensolaris.org >> _______________________________________________ >> lvm-discuss mailing list >> lvm-discuss at opensolaris.org >> >> > >
