Everything Gary said. Something interesting Netflix said this week at the ccevent conference was they were able to depreciate Reserved Instance payments as a capital expenditure.
Also, c1.xlarge is one of only three instance types that seem to get its own physical server for each instance (others are m2.4xlarge and cc1.xlarge iirc). > From: Gary Helmling <ghelml...@gmail.com> > Subject: Re: cost estimation > To: user@hbase.apache.org > Date: Thursday, March 10, 2011, 9:37 AM > Hi Weishung, > > See the EC2 instance pricing details here: > http://aws.amazon.com/ec2/#pricing > > <http://aws.amazon.com/ec2/#pricing>and > try to calculate it out vs. price > quotes for hardware. > > You'll need to run at _least_ m1.large or c1.xlarge instances for HBase. > There was a recent discussion thread covering EC2 performance. You can > look it up at search-hadoop.com. > > If you don't need the cluster running 24x7, maybe you can make the EC2 > pricing work out. Just be aware that you'll be taking a hit in raw IO > performance per node, so you may need to balance that out with more nodes > than you would need with using your own hardware. If you need to persist > data between cluster restarts, you'll also need either EBS or S3 storage, so > be sure to factor that in. Also factor in bandwidth costs if you need to > transfer a lot of data in/out of AWS. > > My own impression is that EC2 is great and very cost effective for short > lived, on-demand computing resources. We use it a great deal for functional > testing. For 24x7 services, it seems like you pay a premium long term over > owning your own hardware, with advantage of no large up-front cost for > acquisition and access to easy elasticity to expand to meet demand, but with > a cost of reduced performance per node due to virtualization. > > Best advice I can give is do some benchmarking to see how many nodes you > need to satisfy your processing requirements in EC2 vs on raw hardware and > try to comparatively price it out. > > --gh > > On Thu, Mar 10, 2011 at 9:12 AM, Weishung Chung <weish...@gmail.com> > wrote: > > > I am trying to estimate the cost of hosting own HBase > cluster vs using EC2. > > Could anyone give me some guidance? > > Cluster size ~ 6 to 8 nodes > > Usage ~ at least 12 hours/day with lot of read/write > operations. (I know I > > need to have more concrete usage number here) > > > > Thank you so much :) > > >
