What is the point of instance storage on EC2?

Instance storage is faster than EBS. You don't mention what you will be doing with your instances, but for some applications speed might be more important than durability. For an application that is primarily doing data mining on a large database, having a few hundred gigs of local, fast storage to host the DB might be beneficial.

Worker nodes in a MapReduce cluster might also be great candidates for instance storage, depending on what type of job it was.

That's what I thought. I could do with finding some numbers for how instance storage varies versus EBS though. I ran bonnie++ on instance storage and it didn't blow my socks off.

– jabley Jul 27 '09 at 21:57 I guess the question is how much did it (not) blow your socks off as compared to the same benchmark on ebs :) I have a feeling this is one of those situations where the right choice is going to differ for everyone, and you'll have to figure out what mix of the available options work best for your particular problem. The beauty of the situation is that if one node takes two hours to churn through your data, you can always just rent two nodes and do it in 1 hour! (assuming you are blessed with parallelisable tasks) – Peter Recore Jul 28 '09 at 1:16 I wonder how instance storage holds up against a RAID of small EBS volumes though.

Perhaps once you're using RAIDs, there's no reason to use instance storage anymore (at least for seek-heavy DB access). – Jo Liss Mar 1 at 22:27 1 Are you sure instance storage is faster than EBS? I have heard otherwise, and the docs also say "if you need to improve the storage latency or throughput, we recommend using Amazon EBS": docs.

Amazonwebservices. Com/AWSEC2/latest/UserGuide/… The main advantage seems to be that instance storage is cheaper. – Thilo Mar 13 at 3:14 I don't know if I was just plain wrong back then or if EBS has gotten faster over the years.

– Peter Recore Mar 14 at 16:02.

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