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Questions tagged [amazon-ebs]

This is for questions on Amazon's storage service for its ec2 service.

572 questions
16
votes
4 answers

Auto-Attach EBS-volume to a New Spot Instance?

I am experimenting with EC2 spot instances, and am needing some data to be retained between terminations. Now as I understand it, when the current price goes above my max. bid, it will be automatically terminated. I assume any init scripts I have…
Jeff
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15
votes
2 answers

Booting an EC2 instance from an existing EBS volume

I'm just getting up to speed on AWS and had a question about using an existing EBS volume as a boot device for an EC2 instance. It looks like a lot of the instances create an EBS volume for their boot devices. In the situation where the EBS volume…
NimbusScale
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14
votes
1 answer

Where's my ephemeral storage for EC2 Instance

I have looked through the following questions, notably How to use "Instance Store Volumes" storage in Amazon EC2? However, it didn't answer. I created a EC2 small instance with EBS as the root device. The AWS instance types list an "instance store"…
Jason McCreary
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13
votes
4 answers

How are Amazon EBS snapshot's sizes calculated?

First, how can I retrieve the space consumed by my EBS snapshots? Second, according to the documentation, Amazon EBS snapshot only backs up the blocks of an EBS volume that have been modified since the last snapshot creation. Suppose I have a 10GB…
Michael Chan
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12
votes
3 answers

Amazon EBS charges calculation

How/when does Amazon calculate how much I will have to pay for EBS? I accidentally created a 100 GiB EBS volume and deleted it after 20 mins when I realized what I had done, does it mean I will be charged $10 at the end of the month? It's been a…
mak
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12
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3 answers

Simple Backup Strategy for Amazon EC2 instances / volumes?

You have entered Introductory Backups for Amazon EC2 EBS-backed Windows Images 010... I have been browsing my brains out to find a simple backup strategy for our single windows 2008 server running SharePoint Services. This is an EBS-backed image…
John Miner
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11
votes
3 answers

Download EBS volume or snapshot to file

Is there any way to dump/save EBS volume/snapshot to file or mount it to local Linux file-system? I found only this old thread and this script which intends to save it via S3 and doesn't seem very reliable. I also found this online-tool, but it…
Suncatcher
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11
votes
4 answers

Is it possible to change the EBS volume to different availability zones?

I have a server created in "eu-west-1c" availability zone and I tried to attach the volume created in "eu-west-1a" availability zone to "eu-west-1c" but the server created in "eu-west-1c" is not reachable. Is it any way to attach among different…
Shankar
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11
votes
2 answers

Disk root error on start instance on "Amazon Web Services (AWS)" EC2

I "Detach Volume" and "Attach Volume" again. After that I want "Instance Start" but I get immediately message Error starting instances Invalid value 'i-{id}' for instanceId. Instance does not have a volume attached at root (/dev/sda1) Q so where…
BGBRUNO
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11
votes
4 answers

how do I find out what part of my ec2 storage is ephemeral

This may be a silly question, excuse my ignorance. I have an instance running like this: Does Root Device : EBS mean my entire system is on EBS? I've configured apache and a perl app here, all my config and files will not go away right? How do I…
gideon
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11
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5 answers

Which is faster for read access on EC2; local drive or EBS?

Which is faster for read access on an EC2 instance; the "local" drive or an attached EBS volume? I have some data that needs to be persisted so have placed this on an EBS volume. I'm using OpenSolaris, so this volume has been attached as a ZFS pool.…
Phillip B Oldham
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10
votes
3 answers

Root Device on SSD instance types. SSD vs EBS confusion

I have an AMI that was originally created from a t1.micro linux. The "Root Device Type" of this AMI is EBS (8 GB) and my web application software is "baked" into this root volume. Now I would like to launch an m3.medium instance from this AMI but it…
user183744
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10
votes
1 answer

At what point is EBS usage the bottleneck?

I've got a site hosted on Amazon using a EC2 instance backed by an EBS volume. On the weekends, traffic spikes and I make the instance larger which helps quite a bit -- I'm no longer seeing CPU usage spiking to 100% and the server becoming…
ESW
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9
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3 answers

Should a detached EBS volume keep charging monthly?

First of all, I'm not very used to AWS nor DevOps/admin stuff, but want to learn. So I set up an EC2 instance and attached an EBS volume (15 Gb) some months ago, for testing something during a few days. Then I realize that the monthly charge was…
gustavovelascoh
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9
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3 answers

how to get volume id attached to instance from AWS CLI

i want to get volume id attached to instance like how we get instance id from the meta data InstanceID=`curl http://169.254.169.254/latest/meta-data/instance-id
Nani
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