> On Jan 29, 2018, at 8:05 PM, Sam Gendler <sgend...@ideasculptor.com> wrote: > > Why not use EBS storage, but don’t use provisioned iops SSDs (io1) for the > ebs volume. Just use the default storage type (gp2) and live with the 3000 > IOPS peak for 30 minutes that that allows. You’d be amazed at just how much > I/o can be handled within the default IOPS allowance, though bear in mind > that you accrue iops credits at a rate that is proportional to storage amount > once you’ve started to eat into your quota, so the performance of someone > using general-purpose SSDs (gp2) with 2 terabytes of storage will be > different than someone using 100GB of storage. But I recently moved several > databases to gp2 storage and saved a ton of money doing so (we were paying > for 5000 IOPS and using 5 AT PEAK other than brief bursts to a couple hundred > when backing up and restoring). I’ve done numerous backups and restores on > those hosts since then and have had no trouble keeping up and have never come > close to the 3k theoretical max, even briefly. Replication doesn’t appear to > be bothered, either.
One reason would be that gp2 volumes cap out at 160MB/s. We have a bunch of databases on gp2 (it works great) but that throughput cap can bite you if you’re not expecting it.
