1. Cluster Shared Volumes Reborn in Windows Server 2012 Gareth JamesHani AdhamiSenior Consultant WSV423

4. Manageability Multi-path Masking several LUN’s Flexibility LUN - smallest unit of failover Capacity Poor SAN space utilisation Scalability Complexity with drive letters

9. Under the hood CSV Architecture

10. Metadata Shared LUN Shared Storage VHD Read/Write Simultaneous read/write access on all Cluster Nodes Server side metadata synchronisation - Avoids I/O interruptions

11. Key Takeaways Metadata updates - small operations, infrequent for VMs Parallel metadata updates - non-disruptive for applications

12. Disk Volume Manager NTFS CSV File System Filter VM Share Server / SMB Node 2 Disk VM Share MUP/RDB SS/SMB Node 1 VM Share MUP/RDB SS/SMB Node 3 Direct I/O CSV VolumeM gr CSV Proxy File System Storage Connection Broken or not present Coordination Node CSV VolumeM gr CSV Proxy File System CSV VolumeM gr CSV Proxy File System CSVFS SAN LBFO/RDMA

14. demo Setting up Clustered Shared Volumes

18. Resiliency How CSV Enables Even Higher Availability

20. VHD VM running on Node 2 is unaffected Coordination Node SAN Connectivity Failure I/O Redirected via network VM’s can then be live migrated to another node with zero client downtime

21. VHD Volume relocates to a healthy node Brief queuing of I/O while volume ownership is changed Node Failure VM running on Node 2 is unaffected Coordination Node New Coordinator Node

22. VHD Volume mounted on Node 1 Network Path Connectivity Failure Metadata Updates Rerouted to redundant network Fault-Tolerant TCP connections make a path failure seamless VM running on Node 2 is unaffected

23. demo Cluster Shared Volume Resiliency

24. Performance Improved CSV Performance

26. demo Cluster Shared Volume Block Cache in action

27. Block level I/O performance parity Direct I/O Remote file system (SMB) performance parity Redirected I/O

28. 2x performance over File System redirection Disk Volume Manager NTFS CSV File System Filter VM Share Server / SMB Node 1 VM Share MUP/RDB SS/SMB Node 2 Storage Connection Broken or not present Coordination Node CSV VolumeMgr CSV Proxy File System CSV VolumeMgr CSV Proxy File System CSVFS LBFO/RDMA Avoids traversing file system stack twice

30. CSV Streaming I/O Across Multiple Networks Coordinator Node VHD 10.10.10.X 20.20.20.X VM with I/O being redirected

31. I/O redirection needed less often CSV Block Level Redirection SMB multi- channel Direct (RDMA) Improved SMB performance ~2% off block Many Pieces Come Together for Radical Improvement

32. Deployment CSV Deployment Considerations

35. Backup CSV Backup

37. INFRASTRUCTURE as a SERVICE

38. Find Us Later At the ‘Speaker Lounge’ (12:45 – 13:45) Breakout Sessions (session codes and titles) VIR312 - What's New in Windows Server 2012 Hyper-V, Part 1 VIR315 - What's New in Windows Server 2012 Hyper-V, Part 2 VIR314 - WS2012 Hyper-V Live Migration and Live Storage Migration WSV326 - The Path to Continuous Availability with WS2012 WSV332 - Cluster-Aware Updating and the New Generation of WSUS