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Small correction: there's a fairly low limit to how many volumes you can attach to an EC2 instance. Available storage is very high, but not "theoretically unlim
by shykes 16y ago
Small correction: there's a fairly low limit to how many volumes you can attach to an EC2 instance. Available storage is very high, but not "theoretically unlimited".
- psadauskas 16y agoThats why I said "practically unlimited". You get /dev/sd[b-p][1-15] as mountable EBS volumes. Thats (15 * 15) * 1TB, or about 225TB. You may even be able to go higher than "p", but I haven't tried. I'm also not sure, you may even be able to attach somewhere other than /dev/sd* . Either way, after that, your EBS bill is $22,500/mo, just for storage, so you might be able to figure something else out for that cost. But you CAN attach that to a $14/mo EC2 instance, which was my original point. Edited to add: Note that the default limit is 20 EBS volumes per EC2 account. You can request an increase from Amazon if you need more. http://groups.google.com/group/ec2ubuntu/web/raid-0-on-ec2-ebs-volumes-elastic-block-store-using-mdadm http://groups.google.com/group/ec2ubuntu/web/raid-0-on-ec2-e... Still, 20TB is "practically unlimited", for most applications.
- shykes 16y agoIn my experience a volume can only be attached to /dev/sd[b-p], so it's a 15TB limit per instance. If what you say is true, that would be great news. I'm testing it right now. Also, in response to your question: I can confirm that EC2 complains if you try going above sdp, or anywhere else.
- psadauskas 16y agoI know that the Centos and Ubuntu AMIs don't know anything above /dev/sdp, but I haven't tried any others. I have tried /dev/sd1 through /dev/sdd15 and /dev/sde1-4, and that works fine on Canonical's official 10.04 AMI.