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From Joaquin Casares <joaq...@datastax.com>
Subject Re: EC2 raid0 disks ?
Date Wed, 05 Oct 2011 01:05:22 GMT
Hello again,

Also, EBS volumes can be attached, but the performance issues cause other
issues when running a healthy cluster. From experience running clusters on
EBS volumes bring their own set of unique problems and are harder to debug.

Here's a quick link that provides a bit more background information on why
it's not the best fit for Cassandra.
http://www.mail-archive.com/user@cassandra.apache.org/msg11022.html

Thanks,
Joaquin Casares
DataStax
Software Engineer/Support



2011/10/4 Yi Yang <i@iyyang.com>

> AFAIK it's around 450G per ephemeral disk.
> BTW randomly you can get high performance EBS drives as well. Performance
> are good for DB but are random in IOps.
> ------Original Message------
> From: Yang
> To: user@cassandra.apache.org
> ReplyTo: user@cassandra.apache.org
> Subject: EC2 raid0 disks ?
> Sent: Oct 5, 2011 5:01 AM
>
> it seems that how many virtual disks you can have is fixed:
>
> on m2.4xlarge you have 2 disks, while on m2.2xlarge you have only 1,
> so I can't setup a raid0 on m2.2xlarge
>
> am I correct?
>
> Thanks
> Yang
>
> 從我的 BlackBerry(R) 無線裝置

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