Lighting talk at CloudCamp BCN 2010

1. To Cloud or not To Cloud
¿Es la nube la solución adecuada para tu empresa?
Sergi Morales, CISM
Founder & CTO

3. Context
Cloud
IaaS
PPU
API

4. Cloud is Good
 Elasticity, scale-out
 Commodity Infrastructure
 x86, «small» machines
 «low» performance per machine
 No «security» concerns
 Security is a state of mind
 Technical proficiency

5. Cloud is Bad
 Constant or very low/high needs
 Specialized infrastructure
 Sparc, PowerPC, GPUs
 Huge amounts of RAM
 Low latency network (Infiniband, 10 GbE,…)
 Regulatory guidelines (LOPD, SOX, etc..)
 Solution-in-a-Box

6. Hills (not peaks)
 Wordpress with 180.000 followers
 Crashing at every Tweet
 1 GB Ram, ½ core, 32 GB HD, 400 GB BW
 A “bit” of tuning:
 Nginx vs. Apache
 FastCGI PHP vs. mod_php
 Caching 30s HTML

7. Elasticity
 Show info to users when primary is down
 Send a 503 so is not indexed by Google
 Impossible to do Capacity Planning
 1 instance during valleys
 Auto configuring instances
 Load Balancing + Auto-scaling
 Replicating data, snapshots, multi-DC

8. Disaster Recovery
 Code + assets on Object or Persistent Storage
 DB transaction logs to Object Storage
 Every X days consolidate logs
 Every Y days test DR
 Beware of SPOF (DNS, VPN, IPs on FW)

9. It’s all about money
 Leverage Economies of Scale
 Rule of thumb
Cloud Bandwidth «Expensive»
Cloud Storage «Expensive»
Cloud Processing Cheap
Elasticity Priceless

10. Summary
Low needs Hosting, SaaS
High & core
needs
Dedicated
Elasticity Cloud (IaaS)

11. Sergi Morales, CISM
Founder & CTO
e: Sergi.Morales@expertosenti.com
w: www.expertosenti.com
t: 668897684 (6688-XPNTI)
b: blog.expertosenti.com
l: www.linkedin.com/in/sergimorales