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Questions tagged [amazon-ebs]

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

573 questions
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Will my EC2 Spot Instance Volumes Die with the Instance?

Consider my high-CPU spot instance with five drives. Drive c: is the boot drive. Drive d: is an additional volume that I created and manually attached to the instance. Volumes e:, f:, g:, and h: are ephemeral local drives. Let's say the spot…
Chad Decker
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What are the differences between availability zones for Amazon EC2 in US east?

Are there any known differences between the different US East availability zones? I've noticed 1e is new on the list. Does that mean that the underlying hardware is newer and the EC2 instances potentially have better performance? It seems that I…
Nic Cottrell
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Setting up Subdomains within Amazon AWS Elastic Beanstalk

I'm trying to setup an application within Amazon's Elastic Beanstalk, and I'd like to use a subdomain for part of the application. Ideally, that subdomain would be mapped to a folder within the document root (ie: http://test.mydomain.com pulls the…
Harry
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How to migrate an EC2+EBS standard instance to spot instance?

I've been playing with EC2 spot instances, with the ultimate aim of migrating a standard instance hosting a website to a spot instance (yes, I'm well aware this really isn't what spot instances are for, but in this case I'm quite prepared to trade…
timday
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persistent storage on Amazon EC2 and other questions

i come from the land of VPSes, and all this cloud hype confuse me. i have been reading through the amazon EC2 guide for the past 2 days, but i still have few sketchy points i'm not understanding. if i use an EBS backed ubuntu AMI, where exactly is…
Waleed Hamra
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What design features make Joyent's ZFS and Amazon's EBS (S3) reliable?

I know this isn't exactly an apples to apples comparison, what I'm trying to evaluate is which one is safer - less likely to lose data. Joyent's SmartOS uses ZFS to store data whereas an EC2 machine can use Amazon Elastic Block Store (EBS) which…
Akshat
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High iowait on Amazon EC2 MySQL instance with EBS volume

We have a MySQL server running on an Amazon EC2 c1.medium instance relying on a single EBS volume using the ext3 filesystem for storage. This MySQL server is queried ~500/ps by several applications running on some web servers, which are also at the…
Luis Fernando Alen
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How to programmatically migrate an EC2 EBS AMI to other regions?

Before EBS based AMIs were available, it was possible to use the command ec2-migrate-image in order to migrate AMIs to different regions. Is there a simple way to do the same for EBS based AMIs? Either using the official amazon EC2 API command line…
Tom Feiner
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Is EBS naturally CPU-hungry?

We have an m1.medium EC2 instance with a small (15G) EBS drive, running both Rails 3 and a PostgreSQL server. We've noticed CPU spikes at odd times, and finally realized that even simple, sustained EBS access seems to pin the CPU. For instance,…
Jay Levitt
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Launching AWS Windows instance from snapshots?

I have a Windows-based Amazon EC2 instance with an EBS drive as the root device. Is it possible to launch a copy of this instance without creating an AMI - for instance, from a snapshot of the C: drive? We'd like to test something on a clone of the…
Rhys Causey
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Ec2 micro instance, EBS, I/O and speed. How can I improve performance?

I have a micro instance mounted with an EBS volume. I have to pay per million read/writes to the EBS volume. But by the very nature of EBS I/O is very slow and consequently services like MySql is slow. Can someone suggest ways to speed up my…
Quintin Par
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Estimate IOPS for an Amazon EBS volume using Windows PerfMon

I'm evaluating moving our aging infrastructure to Amazon's AWS and am trying to estimate costs. I know our current disk space requirements, bandwidth, and most of the other variables that will affect cost. The one that's got me stumped is IOPS on…
Andorbal
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CentOS, Amazon EC2, and EBS AMI

How do you go about finding the most "accepted" image for Amazon which allows you to store it as an EBS image. Specifically I'm looking for a CentOS image.
Tyndall
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How to see updates to EBS volume when attached to multiple instances?

I have two ec2 instance running Ubuntu 18.04. I have created a Provisioned IOPS SSD (io1) volume and enabled multi-attach. I have successfully mounted the volume on both instances and can read and write to it without any issues. The problem now is…
codemonkey
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is CPU actually occupied during iowait (%wa in top) on Linux / EC2?

On an 8-way Amazon EC2 instance (running Linux 2.6.21) with 8 EBS volumes and a lot of disk traffic, we see high %wa in top (30-40%), and high load average (8-9). My understanding is that processes waiting on I/O from the EBS volumes are counted in…
user27045
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