scaling up vertically upgrading HD

John Daily jdaily at basho.com
Thu Apr 23 10:53:48 EDT 2015


Riak does not currently try to protect you against dumping 2 gallons of water in a 1 gallon jug, so each node will write data until it can’t.

-John

On Apr 23, 2015, at 10:42 AM, Alex De la rosa <alex.rosa.box at gmail.com> wrote:

> Cool, thank you :) however, is true that if 4 nodes are 1TB and the other one is 2TB; the 5 nodes will act as having 1TB each, right? (I guess that's what you mean with "Riak allocates data to nodes evenly")
> 
> Thanks,
> Alex
> 
> On Thu, Apr 23, 2015 at 4:40 PM, Jon Meredith <jmeredith at basho.com> wrote:
> Hi Alex,
> 
> Riak allocates data to nodes evenly - it doesn't take into account free space.  You should just be able to upgrade all nodes to 1Tb and Riak will use the space, without needing to take any additional actions.
> 
> Jon
> 
> On Thu, Apr 23, 2015 at 7:17 AM, Alex De la rosa <alex.rosa.box at gmail.com> wrote:
> Hi there,
> 
> I have the following question about scaling up vertically upgrading HDs to get more space. I have the understanding that if HDs are of different sizes on ring creation, they get the smallest size of them all and make all nodes even, for example:
> 
> Node 1: 500GB
> Node 2: 500GB
> Node 3: 750GB
> Node 4: 500GB
> Node 5: 750GB
> 
> In this case riak would make a parity of 500GB per node... so... how could we scale up the HDs? Imagine I want to turn them into the following:
> 
> Node 1: 1TB
> Node 2: 1TB
> Node 3: 1TB
> Node 4: 1TB
> Node 5: 1TB
> 
> How can you rebalance the cluster in the way their partitions grow to fit this new setup? (using Riak 2.1)
> 
> Thanks,
> Alex
> 
> _______________________________________________
> riak-users mailing list
> riak-users at lists.basho.com
> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
> 
> 
> 
> 
> -- 
> Jon Meredith
> Chief Architect
> Basho Technologies, Inc.
> jmeredith at basho.com
> 
> _______________________________________________
> riak-users mailing list
> riak-users at lists.basho.com
> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.basho.com/pipermail/riak-users_lists.basho.com/attachments/20150423/d2817af0/attachment-0002.html>


More information about the riak-users mailing list