We're running on EBS volumes on EC2. We're interested in leveraging
EBS snapshotting for backups. However, does this mean we'd need to
ensure our pg_xlog is on the same EBS volume as our data?
(I believe) the usual reasoning for separating pg_xlog onto a separate
volume is for performance. However, if they are on different volumes,
the snapshots may be out of sync.
Thanks.