incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Madalina Matei <madalinaima...@gmail.com>
Subject Re: ebs or ephemeral
Date Fri, 07 Oct 2011 08:37:21 GMT
Hi Aaron,

For a 6 nodes cluster, what RF can we use in order to support 2 failed
nodes?
>From the article that you sent i understood "avoid EMS" and use ephemeral.
am i missing anything?

Thank you so much for your help,
Madaina
On Fri, Oct 7, 2011 at 9:15 AM, aaron morton <aaron@thelastpickle.com>wrote:

> Data Stax have pre build AMI's here
> http://www.datastax.com/dev/blog/setting-up-a-cassandra-cluster-with-the-datastax-ami
>
>
> And an explanation of why we normally avoid ephemeral.
>
> Also, I would go with 6 nodes. You will then be able to handle up to 2
> failed nodes.
>
> Hope that helps.
>
> -----------------
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 7/10/2011, at 9:11 PM, Yi Yang wrote:
>
> Obviously ephemeral. It has higher IO availability, will not affect your
> Ethernet IO performance, and it is free (included in instance price)
> and the redundancy is provided by cassandra itself.
>
> 從我的 BlackBerry(R) 無線裝置
> ------------------------------
> *From: * Madalina Matei <madalinaimatei@gmail.com>
> *Date: *Fri, 7 Oct 2011 09:02:06 +0100
> *To: *<user@cassandra.apache.org>
> *ReplyTo: * user@cassandra.apache.org
> *Subject: *ebs or ephemeral
>
> Hi,
>
>  I'm looking to deploy a 5 nodes cluster in EC2 with RF3 and QUORUM CL.
>
>  Could you please advice me on EBS vs ephemeral storage ?
>
> Cheers,
> Madalina
>
>
>

Mime
View raw message