Re: Cassandra on AWS suggestions for data safety

2014-07-24 Thread Alex Major
On Thu, Jul 24, 2014 at 12:12 AM, Hao Cheng br...@critica.io wrote: Hello, Based on what I've read in the archives here and on the documentation on Datastax and the Cassandra Community, EBS volumes, even provisioned IOPS with EBS optimized instances, are not recommended due to inconsistent

Re: Cassandra on AWS suggestions for data safety

2014-07-24 Thread Hao Cheng
Thanks for your response! We're planning using the r3.large instances, they seem to offer the best price/performance for our application (the cheapest way to get both 15GB of RAM and SSD storage). Unfortunately cost wise we can't justify having beefier instances with satisfactory cluster sizes at

Re: Cassandra on AWS suggestions for data safety

2014-07-24 Thread Alex Major
On Thu, Jul 24, 2014 at 12:47 PM, Hao Cheng br...@critica.io wrote: Thanks for your response! We're planning using the r3.large instances, they seem to offer the best price/performance for our application (the cheapest way to get both 15GB of RAM and SSD storage). Unfortunately cost wise we

Re: Cassandra on AWS suggestions for data safety

2014-07-24 Thread Jeremy Jongsma
We also run a nightly nodetool snapshot on all nodes, and use duplicity to sync the snapshot to S3, keeping 7 days' worth of backups. Since duplicity tracks incremental changes this gives you the benefit of point-in-time snapshots without duplicating sstables that are common across multiple

Cassandra on AWS suggestions for data safety

2014-07-23 Thread Hao Cheng
Hello, Based on what I've read in the archives here and on the documentation on Datastax and the Cassandra Community, EBS volumes, even provisioned IOPS with EBS optimized instances, are not recommended due to inconsistent performance. This I can deal with, but I was hoping for some