Each physical data center corresponds to a "logical" Cassandra DC (a group of nodes). In our situation, we need to move one of our physical data centers (i.e., the server rooms) to a new location, which will involve an extended period of downtime.
Thanks Edi On Tue, Nov 5, 2024 at 1:27 PM Bowen Song via user < user@cassandra.apache.org> wrote: > From the way you wrote this, I suspect the name DC may have different > meaning here. Are you talking about the physical location (i.e server > rooms), or the Cassandra DC (i.e. group of nodes for replication purposes)? > > On 05/11/2024 11:01, edi mari wrote: > > Hello, > > We have a Cassandra cluster deployed across three different data > > centers, with each data center (DC1, DC2, and DC3) hosting 50 > > Cassandra nodes. > > > > We are currently saving one replica in each data center. > > We plan to migrate DC3, including storage and servers, to a new data > > center. > > > > 1. What would be the best method to perform this migration, which > > could take several days (2–5 days)? > > 2. Would relying on hints in the other two data centers be a good > > approach? > > > > Thanks > > Edi >
