Reconfigure your ESXi host to increase the usable storage capacity.


  1. Power off the ESXi host.
  2. (Optional) Modify storage disks on the host.
    • Install additional physical disks.
    • Replace existing disks with larger disks.
  3. Power on the host.
  4. Use the hardware RAID utility to change the RAID configuration.
    • If you added physical disks, you can include all disks into a single RAID, or create a separate RAID using only the new disks.
    • If you did not modify storage disks, you can use the RAID utility to change the hardware RAID level. For example, you can change RAID 10 to RAID 5 to increase space efficiency.

What to do next

Depending on whether you are using all of the physical disks in a single RAID, or adding newly installed disks as a separate RAID, your next actions vary.
Option Description
Single RAID Reintroduce the host to the VSA cluster by using the Replace Appliance wizard.
Multiple RAIDs Increase the capacity of the host's VMFS datastore by adding the new storage extent.