1. © 2013 Morphlabs Inc. All Rights Reserved
PRESENTED BY : Christopher Aedo, CTO
CONFIDENTIAL & PROPRIE TARY
OpenStack Capacity
Planning
8-29-2013
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Who the hell am I?
•Christopher Aedo (caedo@morphlabs.com)
•Morphlabs CTO
•20+ year IT veteran (started at Arthur Andersen but NOT responsible for
ENRON debacle!)
•Familiar with this “OpenStacks” thing
•Work with many very very smart people at Morphlabs, and in the OpenStack
community
•Met Vint Cerf once!
•That’s what I look like in the Grand Canyon
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Morphlabs Profile
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Headquartered in Los Angeles
• Venture Funded $22M
• 55 Employees
• Operations in Japan, Philippines and Singapore
• US Operations established in 2009
Successful Open Source Entrepreneurs
• Apache Geronimo > IBM Websphere
• Apache ActiveMQ > Progress Software
Deployments in the US and Asia
OpenStack Foundation Founding Member

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Agenda
Provide a useful structure and related information to help guide your
thinking when it comes to planning an OpenStack deployment.
Areas covered:
•Hypervisor choice
•Workload considerations
•Compute node capacity thoughts
•Storage (block and object)
•REVISIT THIS SLIDE WHEN OTHERS ARE COMPLETE!
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Thank You!
Tom Fifield
Diane Fleming
Anne Gentle
Lorin Hochstein
Adam Hyde
Jonathan Proulx
Everett Toews
Joe Topjian
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oh crap!
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Want the easy answers?
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Unlimited budget
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Unlimited time
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Organized team of geniuses
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Total agreement on expectations
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Getting started
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Getting started
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Spare server
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Devstack!
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First crossroad...
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Private cloud
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Source: http://www.privatecloudandhosting.info/wp-content/uploads/2013/04/private-cloud1.png

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You know your users and workload
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Public Cloud!(I couldn’t find an image that screamed “Public Cloud” unfortunately.)

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Users and workload likely unknown
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Profile your workloads if possible
•Load test!
•Benchmark!
•Get a sense of IOPS with iostat!
•Quick, someone yell out their favorite profiling methodology!
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Hypervisor

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Hypervisor

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Compute Density

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Compute Density
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(overcommit fraction * physical cores)
---------------------------------
vcores per instance
ephemeral storage desired
vs.
physical storage available

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Major vectors
•Budget
•New/existing equipment
•Space/power, desired performance
•How much compute per node?
•How much RAM per node?
•How much storage per VM?
•How many IOPS will you need?
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Speaking of IOPS
FOR EXAMPLE:
• Model: Western Digital VelociRaptor 2.5" SATA hard drive
• Rotational speed: 10,000 RPM
• Average latency: 3 ms (0.003 seconds)
• Average seek time: 4.2 (r)/4.7 (w) = 4.45 ms (0.0045 seconds)
• Calculated IOPS for this disk: 1/(0.003 + 0.0045) = about 133 IOPS
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Source: http://www.techrepublic.com/blog/the-enterprise-cloud/calculate-iops-in-a-storage-array/

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Factual Statistic
87% of the people viewing
this presentation would
appreciate a graph right
about now.
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Storage and IOPS dictate density possible
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Thinking about density
32 physical cores
96 virtual cores (3x overcommit)
1tb storage (@10gb/vcore)
192gb RAM needed (overcommit possible)
50 IOPS/VM (that’s on the low side)
5000 IOPS required
~125 IOPS per 10k SAS
12 100gb disks RAID10: ~1500 IOPS
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Thinking about density
~125 IOPS per 10k SAS
12 100gb disks RAID10: ~1500 IOPS
50 IOPS/VM (that’s on the low side)
30 VMs
12 physical cores (3x overcommit)
60 gb RAM (@2gb/vcore)
300 gb storage (@10gb/vcore)
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STORAGE
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Storage

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STORAGE
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Storage

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STORAGE
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Storage
NEED MORE
STORAGE!

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STORAGE
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Storage
I’LL GET
MORE TAPES
FAST!

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STORAGE
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Storage
DID YOU SEE
BREAKING BAD LAST
NIGHT?

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STORAGE
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Storage
OMFG YES!

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STORAGE
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Storage

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STORAGE
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Storage
SO... THOSE TAPES,
SOON? NOW?

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NETWORKING
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NETWORKING
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NETWORKING
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Cloud Controller

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Outgrowing your cloud controller
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Outgrowing your cloud controller
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Outgrowing your cloud controller
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Outgrowing your cloud controller
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MONITORING
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Contact: Christopher Aedo
caedo@morphlabs.com
Thank You!