Re: Re : Restoring nodes in a new datacenter, from snapshots in an existing datacenter

2015-08-28 Thread sai krishnam raju potturi
thanks Nate. But regarding our situation, of the 3 Datacenters we have DC1 DC2 and DC3, we take backup of snapshots on DC1. If DC3 were to go down, will we not be able to bring up a new DC4 with snapshots and token_ranges from DC1? On Fri, Aug 28, 2015 at 3:19 PM, Nate McCall wrote: > You cann

Re: Re : Restoring nodes in a new datacenter, from snapshots in an existing datacenter

2015-08-28 Thread Nate McCall
You cannot use the identical token ranges. You have to capture membership information somewhere for each datacenter, and use that token information when briging up the replacement DC. You can find details on this process here: http://docs.datastax.com/en/cassandra/2.0/cassandra/operations/ops_snap

Fwd: Re : Restoring nodes in a new datacenter, from snapshots in an existing datacenter

2015-08-28 Thread sai krishnam raju potturi
hi; We have cassandra cluster with Vnodes spanning across 3 data centers. We take backup of the snapshots from one datacenter. In a doomsday scenario, we want to restore a downed datacenter, with snapshots from another datacenter. We have same number of nodes in each datacenter. 1 : We kno