3 ms·

EBS is bounded at 1TB / volume. Then you have to stripe.

danudey 16y ago
But the point is that you can do that. With Rackspace, you get X amount of storage, and that's the end of it. If you're getting full, your only option is to get a server with twice the RAM and disk at twice the price. With EC2, I can have a server half the price of Rackspace's cheapest instance, but with theoretically unlimited storage space. I could use that e.g. for backing up server data, or as an NFS share. The one major limitation of Rackspace's service is disk space. It's severely limited, and there's not much you can do about it.
- 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 ago
    Thats 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 ago
      In 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 ago
        I 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.

But the point is that you can do that. With Rackspace, you get X amount of storage, and that's the end of it. If you're getting full, your only option is to get a server with twice the RAM and disk at twice the price. With EC2, I can have a server half the price of Rackspace's cheapest instance, but with theoretically unlimited storage space. I could use that e.g. for backing up server data, or as an NFS share. The one major limitation of Rackspace's service is disk space. It's severely limited, and there's not much you can do about it.

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 ago
  Thats 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 ago
    In 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 ago
      I 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.