Transcript Virtualization for Disaster Recovery & Business Continuity

DR Challenges of Traditional DR
Production
DR
Application
App
bound to
OS, OS
bound to
HW
• Bound to HW
Application
• 5-10% utilized
OS
OS
OS files
x86
OS files
WAN
x86
local
storage
Storage
local
storage
Storage
DR is EXPENSIVE and COMPLEX!
Waste of servers, storage, power & space at DR site!
1:1
DR Challenges of traditional DR
Challenges of Traditional DR: Recovery Process
Prod
DR
“Boot & Pray”
cd, tape or
ghost image
Application
OS
Application
WAN
OS
OS files
OS files
x86
local
storage
x86
local
storage
Repl process: OS – Images
App Data-Replication SW:
Storage
–
–
–
–
SAN-SAN, OS based
Just Tier 1!
Storage
Complex to physically recover OS, applications & data
Separate processes for system and application data
OS & applications have dependencies on hardware configuration
Tier 2 & 3 applications left unprotected, adding to Tier 1 RTO risk
Slow and Unreliable Process
Drawbacks of traditional DR
• Waste of resources: servers, networking,
storage, space, power, cooling, connectivity...
• High maintenance cost: any Change in Primary ->
needs Change in DR (HW/SW)
• Hard or impossible DR simulation
(conflicts with the primary)
• Hard or impossible alternative usage
(quality, test, development)
• Final Result: When needed will often not work!
What is Server Virtualization
VMware server virtualization packages hardware, OS, and
applications into a portable virtual machine package
Before Virtualization
•
•
•
Software tied to hardware
Single OS image per machine
One application workload per OS
After Virtualization
•
•
•
Multiple workloads per machine
Software independent of hardware
System, data, apps are files
VMware Virtualization Enablers for DR
Hardware Independence
• Eliminate need for 1:1
hardware duplication for DR
• Eliminate risk of hardware
“configuration drift” (disparate sites)
• Re-use older servers for DR
Run a virtual machine on
any server without
modification
The Challenges – as Seen in the Field
Customer challenges:
• Low budget
• Lack of experienced personnel
• Solution is complex and slow to deploy
Customer profile:
• Customer who otherwise would not implement DR solution
because of high costs
• Customer who is looking for solutions for department or branch
office
• Virtualization newbie looking for add-on to an existing DR
solution
• Customer who is under the time pressure
The Solution: DR in a Box
Main Features:
• Affordable
• Easy
• Pre-packaged
• Flexible
What is the KEY
•
•
•
•
•
Packaged solutions are usually less expensive than traditional
approach via consulting
Reusable solutions and deliverables instead of time intensive
customizations
Redeploy a reinforced solution instead of designing a new
solution
Use less experienced staff for the implementation
Flexibility is one of the main customer demands, so it needs to
be addressed:
DR-in-a-box is designed as a set of a few solution blocks.
Each block is a packaged solution designed to solve a sub-set
of the problem. Blocks may be combined to build a complete
disaster recovery solution.
DR in a Box Solution Blocks – Outline
DR for VirtualCenter - What is THE KEY
VirtualCenter Server is almost a stateless application.
However the replication is required for the following files:
• SSL certificateFlex
• License files
• VirtualCenter Configuration file
• Optionally -upgrade files
Additionally, each ESX Server stores the IP address of the
VirtualCenter Server in the agent configuration file
• IP address change is necessary to bring the standby VirtualCenter
Server in production
DR for VirtualCenter – Solution Design
DR for VirtualCenter - Disaster Recovery
Active / Active with VMware HA – Solution Design
Active / Active with VMware HA Solution Design Disaster Recovery
Active / Passive DR Site – Solution Design
Active / Passive DR Solution Design Disaster Recovery
Guest OS Storage Replication – Solution Design
Guest OS Storage Replication Solution Design Disaster Recovery
Network Reconfiguration –Solution Design
Network Reconfiguration Solution Design Disaster Recovery
Solution Blocks – Outline
Questions?
Thank You !!