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WEBINAR
How to Avoid Disasters via Software-
Defined Storage Replication & Site Recovery
Augie Gonzalez
Director of Product Marketing
DataCore Software
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Turbulent
Times
Source: NOAA
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• Shifting weather patterns
• Greater intensity
• Higher frequency
• Result: Areas once thought immune, are now suffering major damage
from hurricanes, flooding and other natural disasters
3
Increasing Vulnerability
Observed U.S. Trends in Heavy Precipitation
Relativenumberof
ExtremeEvents(%)
Source: 3rd National Climate Assessment
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• Cause: High energy storm near South Central US datacenters
• Initial impact: Voltage sags & swells impact cooling systems
• Reaction: Structured power down process in region
• Consequences: Azure DevOps (VSTS) Services in area became unavailable
• Global impact: Azure Marketplace was down
• Degraded performance in other regions
• High latencies and timeouts with Active Directory
4
Azure Outage Postmortem
September 4, 2018
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Remedies under consideration
• Synchronous replication between South Central and North Central US
would add 70ms for each round trip] – too long for key services
• Investigating feasibility of Asynchronous replicating data across regions
• Regularly exercise fail over across regions
“
” Source: Service Blog – Azure DevOps
Our goal is to provide the best balance among
competing objectives of high performance and
high availability.
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Asynchronous Replication &
Advanced Site Recovery
Back Stage Tour
6
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Disaster Recovery
@ Azure Cloud
SQL Server
SQL Server
Primary Data Center
On-premises
Remote
Replication over IP
(bi-directional)
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8
EastWest
Out-of-band Mgmt
Vmhba64:
OracleServer:
ESXi:
Main Data Center SAN
DR SAN
North
Live Environment
South
Azure-DR-Cloud
Azure-DR-Node
Async
replication to remote
sites
Synchronous Mirror
within Metro Area
HOSTS SQLServer:
SQLServer:
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9
Primary Site
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11
Remote DR Node
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12
Initialize Replication
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Design Tenets
Replication
TestingSeparation
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• Use Software-defined storage services to continuously replicate
data, containers and virtual machine images over long distances
• Evaluate alternatives between secondary sites you own or rent vs.
virtual destinations in public Clouds
• Apply techniques that help you test and fine tune recovery
measures without disrupting production workloads
• Establish a rigorous procedure & regularly practice
transferring responsibilities to the remote site
• Seek rapid restoration of normal operations at the primary
facilities when conditions permit
14
Take Aways
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15
Comprehensive Set of Advanced
Data Services
VIRTUALIZED HOSTS PHYSICAL SERVERS
Adaptive Parallel I/O
Asynchronous Replication
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Questions?
The Authority on Software-defined Storage
info@datacore.com
www.datacore.com