Right, local snapshot is no-cost both from an EC2 pricing standpoint and from a disk usage standpoint (because it uses hard links).
On Wed, Mar 9, 2011 at 10:48 AM, Sasha Dolgy <sdo...@gmail.com> wrote: > Hi Will, > http://wiki.apache.org/cassandra/Operations#Backing_up_data > If the snapshot is written to the ephemeral storage ... there isn't a cost. > (i need to confirm that) > You can then move this to an S3 bucket with RDS if you want or full > 99.999999999% redundancy and have it available to developers > This is what I had in my head.... > -sd > > On Wed, Mar 9, 2011 at 5:39 PM, William Oberman <ober...@civicscience.com> > wrote: >> >> I thought nodetool snapshot writes the snapshot locally, requiring 2x of >> expensive storage allocation 24x7 (vs. cheap storage allocation of a ebs >> snapshot). By that I mean EBS allocation is GB allocated per month costs at >> one rate, and EBS snapshots are delta compressed copies to S3. >> >> Can you point the snapshot to an external filesystem? >> >> will > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
