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From Mike Subelsky <m...@subelsky.com>
Subject Re: Cassandra in the cloud
Date Thu, 03 Jun 2010 19:26:57 GMT
Ben,

do you just keep the commit log on the ephemeral drive?  Or data and
commit? (I was confused by your reference to XFS and snapshots -- I
assume you keep data on the XFS drive)

-Mike

On Thu, Jun 3, 2010 at 2:29 PM, Ben Standefer <ben@simplegeo.com> wrote:
> We're using Cassandra on AWS at SimpleGeo.  We software RAID 0 stripe
> the ephemeral drives to achieve better I/O and have machines in
> multiple Availability Zones with a custom EndPointSnitch that
> replicates the data between AZs for high availability (to be
> open-sourced/contributed at some point).
>
> Using XFS as described here
> http://developer.amazonwebservices.com/connect/entry.jspa?externalID=1663
> also makes it very easy to snapshot your cluster to S3.
>
> We've had no real problems with EC2 and Cassandra, it's been great.
>
> -Ben Standefer
>
>
> On Thu, Jun 3, 2010 at 11:51 AM, Eric Evans <eevans@rackspace.com> wrote:
>> On Thu, 2010-06-03 at 11:29 +0300, David Boxenhorn wrote:
>>> We want to try out Cassandra in the cloud. Any recommendations?
>>> Comments?
>>>
>>> Should we use Amazon? Rackspace? Something else?
>>
>> I personally haven't used Cassandra on EC2, but others have reported
>> significantly better disk IO, (and hence, better performance), with
>> Rackspace's Cloud Servers.
>>
>> Full disclosure though, I work for Rackspace. :)
>>
>> --
>> Eric Evans
>> eevans@rackspace.com
>>
>>
>



-- 
Mike Subelsky
oib.com // ignitebaltimore.com // subelsky.com
@subelsky // (410) 929-4022

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