3V0-622 objective-3.1-logical-physical with Joe Clarke @elgwhoppo

Joe Clarke
Principal ArchitectObjective 3.1 – Transition from a
Logical Design to a vSphere 6.x
Physical Design

Agenda
• Introduction
• 3V0-622 Objectives
• Conceptual / Logical / Physical Refresher
• Exam Topics
2

Quick Intro
• Joe Clarke from Cleveland, Ohio
• Principal Architect at Rolta AdvizeX
• VCDX5-DTM, VCIX6-DCV, Candidate for VCDX6-DCV
• @elgwhoppo
• www.elgwhoppo.com
• Thanks for having me!
3

You are here
4
https://mylearn.vmware.com/mgrReg/plan.cfm?plan=88743&ui=www_cert

Section 2.1 – Relevant and Important
• Analyze requirements for functional and non-functional elements.
• Build non-functional requirements into a specific logical design.
• Translate stated business requirements into a logical design.
• Incorporate the current state of a customer environment into a logical
design.
• Google: #vBrownBag VCAP6-DCV Design 3V0-622 Obj 2.1 with
#VCDX @PCradduck
• http://vbrownbag.com/2017/02/vbrownbag-vcap6-dcv-design-3v0-622-obj-
2-1-with-vcdx-pcradduck/
6

Skills and Abilities for Section 3.1
1. Analyze design decisions and options selected from the logical design.
2. Determine impact of VMware best practices to identified risks,
constraints, and assumptions in a given vSphere design.
3. Based on business requirements, determine the appropriate roles for
each staff member.
7

Conceptual, Logical Physical Refresher
8
https://vcdx133.com/2015/07/31/vcdx-proportion-and-balance/

Conceptual Design
9
• “If my grandma was a C level and I had to
explain what we were doing, how would I
explain it?”
• Requirements: Functional and Non-
Functional
• Functional – Does it do something, yes or no
 Example: Provides a platform that is supported
by the application vendor
• Non-Functional – Requires specific criteria to
judge the system, how well or fast does it do
it?
 Example: Enough storage throughput in IOPS

Conceptual
10
• Sliding Door is Broken
 Handle is broken
 Does not lock every easily; latch needs
fiddled with at least twice
 Super annoying to close
• “The door takes at least a couple tries to
lock.”
• Functional or non-functional attributes?

Conceptual
11
• Sliding Door is Broken
 Handle is attached
 Glass is on ground in tiny pieces
 Door not attached to house
• “The door doesn’t keep people out at night.”
• Functional or non-functional attributes?

Example Conceptual Design Diagram
12

Logical Design
13
• You should be able to create a logical design entirely
from the VMware stencils
• A Logical Design Answers:
 What are the pieces of software in play and how are
they connected?
 Without naming vendors, what pieces of hardware are in
play? Servers? Storage arrays? Switches? Routers?
Number of uplinks? Cluster sizes?
 How much resource is required in terms of Processor,
Memory and Storage capacity and throughput?
 Business Process; naming the procedure and stops
without naming persons

Example Logical Design Diagram
14
BLADE SERVER
Logical Network Teaming – VDI Blade Host DVS
DVS is NIOC Enabled – Shares Only
All Port Groups Load Based Teaming
All switchports will be trunked and flagged as edge
8 Port
10Gb
NIC
dvUplink1
Management
Port Group
VLAN ID
dvUplink1
dvUplink2
dvUplink4
dvUplink2
dvUplink3
Management VM
Traffic Port Group
VLAN ID
dvUplink1
dvUplink2
vMotion Port Group
VLAN ID
dvUplink1
dvUplink2
Blade Enclosure
Chassis Uplink
Enclosure
Network
Module 1
Fabric Interconnect 1
Enclosure
Network
Module 1
Fabric Interconnect 2
vPC Peer Links
Core Switches Network
ENC1_SUS_2
SUS2_MGMT_VLANID
SUS2_VM_VLANID
SUS2_vMOTION_VLANID
FC Storage Network
FC Storage Network
ENC1_SUS_2
SUS2_MGMT_VLANID
SUS2_VM_VLANID
SUS2_vMOTION_VLANID

Physical Design
15
• A physical design names OEM components and hookups and specifics
• A Physical Design provides:
 CPU Types and Named Models
 Storage type, disk speeds, quantity, capacity, RAID configuration
 Load Balancer Models
 Server Makes and Models
 IP Addresses for VMs
 Port map for cabling, connections
 Cable types, Rack Layout
 Estimated Power Consumption

Example Physical Design
16
PWR
SYS
PWR
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PWR
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PWR
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PWR
SYS
PWR
SYS
PWR
SYS
PWR
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PWR
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PWR
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PWR
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PWR
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PWR
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PWR
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PWR
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PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
CONSOLE
UCS
C240 M3
!
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
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PWR
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PWR
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PWR
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PWR
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PWR
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PWR
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PWR
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PWR
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PWR
SYS
PWR
SYS
PWR
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PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
CONSOLE UCS
C240 M3
!
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
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PWR
SYS
PWR
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PWR
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PWR
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PWR
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PWR
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PWR
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PWR
SYS
PWR
SYS
PWR
SYS
CONSOLE
UCS
C240 M3
!
vsanDatastore
View Management Block
vsanDatastore
17.5TB UsableCapacity
2 3 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
CISCO UCS 6296UP
STAT
ID
2 3 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
CISCO UCS 6296UP
STAT
ID
Cisco
VIC1225
2 Port 10Gb
ESXi on
16GB SD
ESXi on
16GB SD
ESXi on
16GB SD
(4) Cisco C240 M4 - ESXi 6.0 U2
Dual 18 Core 2.3 GHz E5-2697v4
512GB Memory
Cisco VIC 1225 Dual Port 10Gb SFP+ CNA
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
PWR
SYS
CONSOLE
UCS
C240 M3
!
ESXi on
16GB SD
FI-1 Networks – DVUplink 1
DV-Switch0 - ESXi Management
DV-Switch0 - vMotion Network
DV-Switch0 - VSAN Network
DV-Switch0 – Server VM Traffic
FI-2 Networks – DVUplink 2
DV-Switch0 - ESXi Management
DV-Switch0 - vMotion Network
DV-Switch0 - VSAN Network
DV-Switch0 – Server VM Traffic
Disk Group 1
1x 400GB 2.5" SAS SSD
4x 1.2TB 10K 2.5" SAS
Cac hi ng Capacity
Cisco 12G SAS Modular
RAID Controller (JBOD)
Disk Group 2
4x 1.2TB 10K 2.5" SAS
Cac hi ng Capacity
Disk Group 1
4x 1.2TB 10K 2.5" SAS
Cac hi ng Capacity
Disk Group 2
4x 1.2TB 10K 2.5" SAS
Cac hi ng Capacity
Disk Group 1
4x 1.2TB 10K 2.5" SAS
Cac hi ng Capacity
Disk Group 2
4x 1.2TB 10K 2.5" SAS
Cac hi ng Capacity
Disk Group 1
4x 1.2TB 10K 2.5" SAS
Cac hi ng Capacity
Disk Group 2
4x 1.2TB 10K 2.5" SAS
Cac hi ng Capacity

3.1 Objective 1
• Analyze design decisions and options selected from the logical design.
17

Analyze Design Decisions from Logical
• Example logical design decision:
 Cluster Sizes and Resource requirements
 Integration of software components “This talks to this”
 Why multiple clusters?
 Why or why not use a load balanced PSC?
18

Analyze Design Decisions from Logical to Physical
• How do each of my decisions impact:
• Availability – How does my server OEM choice impact availability?
• Manageability – How does my network choice impact availability?
• Performance – How does my processor clock speed impact performance?
• Recoverability – How does my secondary vendor storage impact RTOs?
• Security – How does re-using old gear bring risk?
• Cost – Why is one option more expensive than another?
19

VCDX Tip: Fuzz the design
• fuzzing is a software testing technique used to discover errors and
security loopholes in software, inputting massive amounts of data in an
attempt to make it crash.
• Go on the offensive like you didn’t design it. Remove yourself from it.
• Ask:
 Why?
 Why not?
 What if costs changed?
 Alternatives?
20

Break it down, Sum it Up
21 http://www.vmware.com/solutions/software-defined-datacenter/validated-designs.html

Break it down, Sum it up
• Design Justification: Short phrase on why you ultimately decided
something.
 Tip: it’s not a thesis
22

3.1 Objective 2
• Determine impact of VMware best practices to identified risks,
constraints, and assumptions in a given vSphere design.
23

Best Practice
• True best practices are almost always based on previous experience.
• There is no magic book of conclusive best practices.
• Be able to explain the characteristics of something you deem a best
practice and why it is.
• VCDX Defense Tip:
• Don’t ever answer with “Because it’s a VMware best practice”
24

Constraints, Risks and Assumptions
• Assumptions lead to risks
• Constraints can lead to risks
• Ask yourself, what is the impact of the risk?
25

Risk Example
• Forecasted bandwidth for storage replication will bring the DCI to 95%
utilization up from 15%.
• Potential Downstream Impacts:
 RPO cannot be guaranteed if link saturation occurs
 Saturation of a DCI can result in diminished performance for non-storage
related traffic even with QoS in place
 Additional costs for DCI throughput increase
 RPO may need to be adjusted
• Mitigation: Important! Include one!
• Risks without mitigation plans are whiny at best.
26

The eternal struggle:
• Is it a constraint?
• Is it a requirement?
• Is it both?
 Constraint: a limitation or restriction.
 Requirement: must either perform a function, or be a specific measurement of a
function’s success
• Is it an assumption?
27

Constraint vs Requirement:
• Customer demands that all server based network integration must
interoperate with existing Cisco switches.
28

• Customer demands that all switching hardware acquired is Cisco in order
to capitalize on existing investment in management tools.
29

• Customer demands that all storage use only flash disks.
30

3.1 Objective 3
• Based on business requirements, determine the appropriate roles for each
staff member.
31

Different Roles care about Different Things
• Real world: An IT org will decide itself who is doing what in regards to
operations.
• Real world: You will need to make recommendations of who should own
what operational responsibilities of a design.
• Reading between the lines: Understand the different roles and what they
care about.
32

Business requirement focus for roles
• Roles:
 CEO
 CFO
 CIO
 CISO
 Development Manager
 Infrastructure Manager
 VMware Engineer
 Network Engineer
 Legal Counsel
• Requirements typically focus on:
 Company Execution
 Company Bottom Line
 IT’s level of service to the business
 Securing Assets, Brand reputation
 Availability of resources
 Infrastructure Cost, Reliability
 Ease of software installation
 Time to value of assets
 Not getting sued
33

CEO, ACME Retail Chain
• “We are expanding our online retail platform to meet the anticipated
demand during our peak seasons. It must not go down during the holiday
season and it must be able to transact business with the same speed and
experience we usually provide, no matter the load”.
• Underlying requirements and qualifying questions:
 Availability - Wants it functional especially during the holiday
 What is the maximum downtime permissible?
 What is the difference in lost revenue regarding availability between peak and off
seasons?
 KPI – Uptime in nines
 Performance – Transactions must be as if there’s no rush
 Are normal times and experiences well understood and documented?
 KPI – Transactions per second, QA engineer web checkout workflow.34

Infrastructure Manager, ACME Retail Chain
• “We are under tremendous pressure from the CFO to keep costs to a
minimum, while expanding our infrastructure footprint by several rows
worth. Also it seems like nobody understands that we need to protect all
the additional data this is going to generate”.
• Underlying requirements and qualifying questions:
 Recoverability – His job is potentially on the line if he loses production data
 What are the recovery requirements?
 KPI – RPO, RTO
 Cost – Must expand while keeping costs to a minimum
 What is the budget allotted for the expansion initiative?
 KPI - TCO
35

3V0-622 objective-3.1-logical-physical with Joe Clarke @elgwhoppo

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