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by Duncan Epping

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Migrating from Hybrid to All-Flash VSAN

Duncan Epping · Mar 22, 2016 ·

I had this question twice last week and I went through the exercise in the lab so I figured I would share the experience. Migrating from Hybrid to All-Flash VSAN is pretty straight forward, and is pretty much an rolling migration. One thing I want to point out is that you need to do the full migration first before you enable any dataservices (dedupe/compression/raid-5/6). This is how you do it:

  1. Open the vSphere Web Client.
  2. Click the Hosts and Clusters tab.
  3. Select the cluster which you want to migrate to all-flash Virtual SAN.
  4. Click the Manage tab.
  5. Click Settings.
  6. Click Disk Management.
  7. Select the first Disk Group and click the Remove Disk Group icon
  8. Select Full data migration and click Yes
  9. Remove the physical HDDs from the host
  10. Add the new Flash devices to the host
  11. Ensure there are no partitions on the flash devices
  12. Ensure they are marked as flash devices
  13. Now create a new Disk Group on this host by clicking the “Create a new disk group” button
  14. Select the Caching Device
  15. Select the Capacity Devices
  16. Click OK

Repeat above steps for each host in the cluster. When finished upgrading all hosts in your cluster you can now enable your dataservices and/or change policies.

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Server, Software Defined, Storage, vSAN 6.2, virtual san, VMware, vsan

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Comments

  1. ghost2512 says

    22 March, 2016 at 21:43

    Thanks, this is what I was searching for!!

  2. Matt Baltz (@mlbaltz) says

    23 March, 2016 at 19:48

    thanks! just did this last month 🙂

  3. samlouis55 says

    23 August, 2016 at 04:44

    Hello, Thanks for the great work. Could you please give me your advise regarding my project using VSAN:
    I plan to purchase 2 HP Servers with this part number (803860-B21)
    On each host, I will use as:
    Caching tier: 1 x Sandisk Lightning Ascend gen. II Solid State Drive – Internal Serial_Interface 2.5″ SDLTODKM-400G-5CA1
    Storage Tier: 1 x SanDisk Optimus MAX SDLLOCDR-038T-5C 4TB SAS 6Gb/s eMLC, 2.5″ 0.5DWPD
    Network: 10Gb 533FLR-T FlexFabric Adapter 2 Ports per controller
    Smart Array P440ar/2GB FBWC

    I will use 2 hosts + 1 witness appliance. Do you think that I can start it like this. My budget is very tight.

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About the author

Duncan Epping is a Chief Technologist in the Office of CTO of the Cloud Platform BU at VMware. He is a VCDX (# 007), the author of the "vSAN Deep Dive", the “vSphere Clustering Technical Deep Dive” series, and the host of the "Unexplored Territory" podcast.

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