Home > Uncategorized > Virtual Fiber Channel or Shared VHDX Cluster?

Virtual Fiber Channel or Shared VHDX Cluster?

One major enhancement of Windows Server 2012 R2, is “Shared VHDX” guest cluster.  However, how to make a choice between virtual fiber channel and shared VHDX guest clusters?  I have done some personal comment and see if they are useful for you to make your own choice:

Virtual Fiber Channel

Pros

  • Familiar – this is what you have been doing so far for physical hosts and SAN: WWN, zoning, etc.
  • Native performance – one less layer is one less layer.  Virtual FC delivers native SAN performance.
  • Migration – possible to failover a cluster to/from physical node from/to virtual node

Cons

  • LiveMigration trick – tricky steps need to be done to avoid drive missing after LiveMigration
  • Backup – not supporting host-based VSS snapshot backup
  • Snapshot – not supporting snapshot and snapshot rollback
  • WWN hell – create a great deals of WWN and mess administration
  • LUN provisioning – requires LUNs to be provisioned.  Storage operations.
  • Not supporting Hyper-V replication

Share VHDX

Pros

  • Shield out direct LUN operations
  • Can leverage advanced Windows storage features – CSV cache, SSD tiering, etc.
  • No virtual SAN switch and virtual FC NIC – easier for Hyper-V farm hardware design
  • Simple to configure
  • Easy to manage – handling VHDX file instead of LUN

Cons

  • Not supporting Hyper-V replication
  • Backup – not supporting host-based VSS snapshot backup
  • Snapshot – not supporting snapshot and snapshot rollback

Then, what’s your choice?  I choose shared VHDX 😉

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Categories: Uncategorized
  1. October 29, 2014 at 9:18 PM

    What about performance between VFC and Shared VHDX?

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