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Storage Virtualisation and VMware. Adam Granquist. What is Storage Virtualisation??. Storage Virtualisation is the pooling of physical storage from multiple network storage devices into what appears to be a single device. Example Technologies EMC VPLEX IBM SAN Volume Controller
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Storage Virtualisation and VMware Adam Granquist
What is Storage Virtualisation?? • Storage Virtualisation is the pooling of physical storage from multiple network storage devices into what appears to be a single device. • Example Technologies • EMC VPLEX • IBM SAN Volume Controller • NetApp Metro Cluster
Why use Storage Virtualisation? • vTeleport - Ever wanted to failover to a completely different location and data centre with zero downtime? • Do you have Storage Arrays from different vendors and want to mirror them? • Active / Active Data centres; • Do you have multiple Arrays from different vendors but want to manage them all from a single pane of glass? • Can enhance the performance of some Arrays.
Key Benefits for Transend • Seem-less data centre failover and failback; • Enhanced Disaster Avoidance and Recovery, potentially automated; • Enables us to meet availability requirements for SCADA Systems; • Enhanced Performance; • Enables the Active / Active data centre concept improving ROI; • Reduced Administration costs; and • Improved redundancy at the storage layer.
What is EMC VPlex • EMC VPLEX is a storage federation solution that can be stretched across synchronous distances (VPLEX Metro), launched in 2010 • Provides simultaneous access to storage devices at different sites by creating a Distributed Virtual Volume that is available on each side of a Cluster. • Can be used in front of most brands of storage arrays. http://www.youtube.com/watch?v=8zf-5NNDFKI
VPlex – Example Architecture 1 http://www.youtube.com/watch?v=fKKhrI7A7Og
Pros and Cons of Example 1 Pros: • Enables Disaster Avoidance using VMotion over distance. • Increased Performance • Enables Active / Active Data Centre Cons: • No Automated Failover • Still require SRM to perform DR
Pros and Cons of Example 2 Pros: • Enables Disaster Avoidance using VMotion over distance; • SRM is not required; • Enables Automated DR using VMware HA; • Increased Performance; • Enables Active / Active Data Centre; Cons: • Increased Reliance on Network Infrastructure • Potential Split Brain Scenario