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Posted to user@cassandra.apache.org by Madalina Matei <ma...@gmail.com> on 2011/10/07 10:02:06 UTC
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
Re: ebs or ephemeral
Posted by aaron morton <aa...@thelastpickle.com>.
yes, should have been
And an explanation of why we normally avoid *EBS*.
My bad.
-----------------
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com
On 10/10/2011, at 9:03 PM, Sasha Dolgy wrote:
> just catching the tail end of this discussion. aaron, in your previous email, you said "And an explanation of why we normally avoid ephemeral. " .... shouldn't this be, avoiding EBS? EBS was a nightmare for us in terms of performance.
>
> On Mon, Oct 10, 2011 at 9:23 AM, aaron morton <aa...@thelastpickle.com> wrote:
> 6 nodes and RF3 will mean you can handle between 1 and 2 failed nodes.
>
> see http://thelastpickle.com/2011/06/13/Down-For-Me/
> Cheers
>
> -----------------
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 7/10/2011, at 9:37 PM, Madalina Matei wrote:
>
>> 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 <aa...@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.
>>
>
Re: ebs or ephemeral
Posted by Yi Yang <i...@iyyang.com>.
Agree, EBS systems are not so good for cassandra systems and during previous conversations in this mail list, people tend to use ephemeral.
從我的 BlackBerry® 無線裝置
-----Original Message-----
From: Sasha Dolgy <sd...@gmail.com>
Date: Mon, 10 Oct 2011 10:03:26
To: <us...@cassandra.apache.org>
Reply-To: user@cassandra.apache.org
Subject: Re: ebs or ephemeral
just catching the tail end of this discussion. aaron, in your previous
email, you said "And an explanation of why we normally avoid ephemeral. "
.... shouldn't this be, avoiding EBS? EBS was a nightmare for us in terms
of performance.
On Mon, Oct 10, 2011 at 9:23 AM, aaron morton <aa...@thelastpickle.com>wrote:
> 6 nodes and RF3 will mean you can handle between 1 and 2 failed nodes.
>
> see http://thelastpickle.com/2011/06/13/Down-For-Me/
> Cheers
>
> -----------------
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 7/10/2011, at 9:37 PM, Madalina Matei wrote:
>
> 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 <aa...@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.
>>
>>
Re: ebs or ephemeral
Posted by Sasha Dolgy <sd...@gmail.com>.
just catching the tail end of this discussion. aaron, in your previous
email, you said "And an explanation of why we normally avoid ephemeral. "
.... shouldn't this be, avoiding EBS? EBS was a nightmare for us in terms
of performance.
On Mon, Oct 10, 2011 at 9:23 AM, aaron morton <aa...@thelastpickle.com>wrote:
> 6 nodes and RF3 will mean you can handle between 1 and 2 failed nodes.
>
> see http://thelastpickle.com/2011/06/13/Down-For-Me/
> Cheers
>
> -----------------
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 7/10/2011, at 9:37 PM, Madalina Matei wrote:
>
> 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 <aa...@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.
>>
>>
Re: ebs or ephemeral
Posted by aaron morton <aa...@thelastpickle.com>.
6 nodes and RF3 will mean you can handle between 1 and 2 failed nodes.
see http://thelastpickle.com/2011/06/13/Down-For-Me/
Cheers
-----------------
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com
On 7/10/2011, at 9:37 PM, Madalina Matei wrote:
> 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 <aa...@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® 無線裝置
>>
>> From: Madalina Matei <ma...@gmail.com>
>> Date: Fri, 7 Oct 2011 09:02:06 +0100
>> To: <us...@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
>
>
Re: ebs or ephemeral
Posted by Madalina Matei <ma...@gmail.com>.
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 <aa...@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 <ma...@gmail.com>
> *Date: *Fri, 7 Oct 2011 09:02:06 +0100
> *To: *<us...@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
>
>
>
Re: ebs or ephemeral
Posted by aaron morton <aa...@thelastpickle.com>.
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® 無線裝置
>
> From: Madalina Matei <ma...@gmail.com>
> Date: Fri, 7 Oct 2011 09:02:06 +0100
> To: <us...@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
Re: ebs or ephemeral
Posted by Yi Yang <i...@iyyang.com>.
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® 無線裝置
-----Original Message-----
From: Madalina Matei <ma...@gmail.com>
Date: Fri, 7 Oct 2011 09:02:06
To: <us...@cassandra.apache.org>
Reply-To: 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