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BCO1883-Deploying an Active Active Datacenter with SRM 5_Final_US.pdf
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Transcript of BCO1883-Deploying an Active Active Datacenter with SRM 5_Final_US.pdf
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Deploying an
Active/ActiveDatacenter with SRM 5
Michael Bailess, American National Bank
Joe Kelly, Varrow
INF-BCO1883
#vmworldinf
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2
Disclaimer
This session may contain product features that are
currently under development.
This session/overview of the new technology represents
no commitment from VMware to deliver these features in
any generally available product.
Features are subject to change, and must not be included in
contracts, purchase orders, or sales agreements of any kind.
Technical feasibi lity and market demand will affect final delivery.
Pricing and packaging for any new technologies or features
discussed or presented have not been determined.
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Session:INF-BCO1883Speaker:Joe Kelly
Speaker:Michael Bailess
Speaker:Greg Camp
Technical Level: TechnicalArea of Interest: Financial Services
Breakout Session
Deploying an Active/Active Data Center
with VMware SRM 5.x
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VM mobility across any distance with the ease of areboot
Application shifting across datacenters. PerpetualDR testing. What we deem as Active/Active
Key features of SRM 5 and EMC RecoverPoint that
will get you there
Key Takeaways
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Introduce who we are, our challenges and ourexpectations
Discuss design constraints and clearly redefine ourActive/Active Datacenter
Explain our Design, Technology used and Networking
Q&A
Agenda
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Community bank with assets of $1.3 billion,
Headquartered in Danville, VA with 25 banking offices
in Virginia and North Carolina
Serving the community for 103 years
2 data centers, 310 VMs total
Per-virtual data center resources CPU: 60ghz
Memory: 192GB
Storage: 20tb
AMNB Who We Are
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DR Site was basically a data vault
No proven DR plan
Data center network was active at onlyone site concurrently
No load-balancing
AMNB Legacy Setup
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Failover of applications not the entire data center
Failover to be transparent to users and applications
Utilize our total investment
Minimize cost and complexity
Partner involvement to back us up
AMNBs Expectations
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Value Added Reseller (VAR) in the Southeast known for thequality of our engineers; we focus on supporting ourcustomers business with technology where it makes sense
VMware Business Continuity Competency Partner of the Year2011 Americas
We know the data center; it is our focus, we are not designed
to be the solution to all your technology purchases
We have established a growing community of Varrowcustomers that is built on trust and a passion for technology
Varrow Who We Are
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100MB dedicated line between DCs with ~20ms latency.
Physical distance was only ~60 miles, right at supported100km range for vMotion over distance. However,latency requirements were not.
No L2 adjacencies. Changing IP addresses was far fromtransparent.
Environment Variables to Contend with(Constraints)
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Protection from logical corruption, Mirroring replication
technologies were not sufficient.
Efficiencies across the pipe were needed. Compressionand bandwidth throttling. Mixing replication andServer traffic.
Minimizing RTO (Recovery Time Objective)
Environment Variables to Contend with(Constraints)
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Dubbed Active/Active Datacenters
Making the location transparent to the end user
The same level of service can be provided at anotherlocation as it can to the primary location
Redefining Active/Active Solutions
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Active network and compute stacks at both locations,ideally stretched VLANs.
Storage writes are written locally and replicated toother site
Manual load balancing
Redefining Active/Active Solutions
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No Shared R/W storage between sites
No dynamic load balancing between sites
No high availability between sites
ESXi clusters are site bound
This is Not a Stretched Cluster Solution
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Both require more complex networking solutions
L2 adjacencies are required for stretched clusters andHighly desired for Active/Active datacenters.
But There are Commonalities
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Ask yourself
How many applications/VMs actually require live cross-site vMotion a la Active/Active storage solutions (VPLEX)
Are cross-site (Active/Active datacenters) cold
migrations (via RP and SRM) an acceptable alternativegiving the operational overhead and cost of the latter?
What Level of Application MobilityDo You Need?
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Why 5.x over 4.x
Planned Migration: ensures changes are replicated Shut down VM, synchronize storage, stop workflow on error
Conversely, DR will not stop the workflow on error
Automatic failback, i.e., reprotection, allows for workflow
based recovery of your failed over VMs back to yourprimary site
VMware Site Recovery Manager
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Replication engine Journaling Technology
Multiple points in time (every write) for recovery
Out of the data path replication
WAN compression, throttling and Dedupe
Reduces complexity during failover operations
Bi-directional replication
EMC RecoverPoint
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No cross site distributed volumes are required.This reduces complexity and added expense.
Per application mobility from one site to another with theease of a per VM reboot Not all environments require 100% uptime
Bring the applications closer to the most critical users in
some cases
Increased operational utilization across sites
Ongoing, fully tested DR Plan
Summary of What Our Design Offers
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VMFS datastores structured according to application
Single datastore in this use case but could be many
supporting a single app
One Datastore per Consistency Group, one datastoreper Datastore group
Note: datastore may include multiple VMs
One Protection Group per Recovery Plan. Mappedaccording to application.
Some of the Details
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What level of recoverability are you accounting for? DR only Secondary site is a data vault. Testing is limited.
Internal vSwitch only tests availability. Cross Environment Isolation Testing Hardest to design for as
you must consider external dependencies (both virtual andphysical)
Rolling Failover more planning up front but greater
assurance of success.
Know your dependencies
and now lets talk networking
Words of Advice
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Stretched Vlan via Metro Ethernet Traffic ingresses and egresses one data center
VM Mobility using Cisco LISP Traffic ingresses and egresses at local data center
Stretched Vlan with FHRP Isolation
Traffic ingresses one data center and egresses local data center
VM Mobility Options
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Stretched Vlan via Metro Ethernet Does not utilize WAN links from both data centers
VM Mobility using Cisco LISP Requires two Nexus 7ks which is cost prohibitive
Stretched Vlan with FHRP Isolation
Egress traffic uses local data center path, most traffic is egressin this customer scenario
VM Mobility Choice
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Use Vlan ACL to block HSRP traffic betweendata centers
Use any Cisco switch that is capable of using Vlan ACLs(i.e., Cisco 2960, 3560, etc.) at either data center
Vlan ACL is applied inline on Layer 2 Metro Ethernet link
FHRP Isolation
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FHRP Isolation
Edge Router
Layer 3
Switch
Layer 3
Switch
Edge Router
MPLS
Metro Ethernet
Block HSRP
Traffic
HSRP VIP:
10.10.1.1
HSRP VIP:
10.10.1.1
Layer 2
Switch
Site A Site B
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VM Mobility using Cisco Cloud Services Router Cisco is offering a router in a VM
Redundant Layer 2 Link Leverage OTV Layer 2 extension on Cisco Cloud Services Router
Use existing Cisco 2951 router with Ethernet over MPLS over GRE
Future Options
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Thank You!Any Questions?
t: @virtualtacit
w: blog.virtualtacit.com
t: @bailessm
w: amnb.com
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Deploying an
Active/ActiveDatacenter with SRM 5
Michael Bailess, American National Bank
Joe Kelly, Varrow
INF-BCO1883
#vmworldinf